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  • Base Sequence
  • American Association for the Advancement of Science (AAAS)  (143)
  • American Association of Petroleum Geologists (AAPG)
  • 2005-2009  (143)
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  • American Association for the Advancement of Science (AAAS)  (143)
  • American Association of Petroleum Geologists (AAPG)
  • Nature Publishing Group (NPG)  (35)
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  • 1
    Publication Date: 2009-03-17
    Description: The three-dimensional molecular structure of DNA, specifically the shape of the backbone and grooves of genomic DNA, can be dramatically affected by nucleotide changes, which can cause differences in protein-binding affinity and phenotype. We developed an algorithm to measure constraint on the basis of similarity of DNA topography among multiple species, using hydroxyl radical cleavage patterns to interrogate the solvent-accessible surface area of DNA. This algorithm found that 12% of bases in the human genome are evolutionarily constrained-double the number detected by nucleotide sequence-based algorithms. Topography-informed constrained regions correlated with functional noncoding elements, including enhancers, better than did regions identified solely on the basis of nucleotide sequence. These results support the idea that the molecular shape of DNA is under selection and can identify evolutionary history.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2749491/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2749491/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Parker, Stephen C J -- Hansen, Loren -- Abaan, Hatice Ozel -- Tullius, Thomas D -- Margulies, Elliott H -- R01 HG003541/HG/NHGRI NIH HHS/ -- R01 HG003541-03/HG/NHGRI NIH HHS/ -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2009 Apr 17;324(5925):389-92. doi: 10.1126/science.1169050. Epub 2009 Mar 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Bioinformatics Program, Boston University, Boston, MA 02215, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19286520" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Amino Acid Motifs ; Base Sequence ; Binding Sites ; Conserved Sequence ; DNA/*chemistry/genetics ; Deoxyribonuclease I/metabolism ; Early Growth Response Protein 1/genetics/metabolism ; Evolution, Molecular ; *Genome, Human ; Humans ; Mutant Proteins/metabolism ; Nucleic Acid Conformation ; Phenotype ; Polymorphism, Single Nucleotide ; Selection, Genetic
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  • 2
    Publication Date: 2009-12-08
    Description: Hepatitis delta virus (HDV) and cytoplasmic polyadenylation element-binding protein 3 (CPEB3) ribozymes form a family of self-cleaving RNAs characterized by a conserved nested double-pseudoknot and minimal sequence conservation. Secondary structure-based searches were used to identify sequences capable of forming this fold, and their self-cleavage activity was confirmed in vitro. Active sequences were uncovered in several marine organisms, two nematodes, an arthropod, a bacterium, and an insect virus, often in multiple sequence families and copies. Sequence searches based on identified ribozymes showed that plants, fungi, and a unicellular eukaryote also harbor the ribozymes. In Anopheles gambiae, the ribozymes were found differentially expressed and self-cleaved at basic developmental stages. Our results indicate that HDV-like ribozymes are abundant in nature and suggest that self-cleaving RNAs may play a variety of biological roles.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3159031/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3159031/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Webb, Chiu-Ho T -- Riccitelli, Nathan J -- Ruminski, Dana J -- Luptak, Andrej -- R01 GM094929/GM/NIGMS NIH HHS/ -- R01 GM094929-01/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 Nov 13;326(5955):953. doi: 10.1126/science.1178084.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and Biochemistry, University of California, Irvine, CA 92697 USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965505" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anopheles/enzymology/*genetics/growth & development ; Base Sequence ; Catalysis ; Eukaryota/enzymology/*genetics ; Expressed Sequence Tags ; Hepatitis Delta Virus/enzymology/genetics ; Molecular Sequence Data ; Nucleic Acid Conformation ; RNA, Catalytic/*chemistry/*metabolism
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  • 3
    Publication Date: 2009-05-09
    Description: Despite tremendous progress in understanding the nature of the immune system, the full diversity of an organism's antibody repertoire is unknown. We used high-throughput sequencing of the variable domain of the antibody heavy chain from 14 zebrafish to analyze VDJ usage and antibody sequence. Zebrafish were found to use between 50 and 86% of all possible VDJ combinations and shared a similar frequency distribution, with some correlation of VDJ patterns between individuals. Zebrafish antibodies retained a few thousand unique heavy chains that also exhibited a shared frequency distribution. We found evidence of convergence, in which different individuals made the same antibody. This approach provides insight into the breadth of the expressed antibody repertoire and immunological diversity at the level of an individual organism.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3086368/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3086368/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weinstein, Joshua A -- Jiang, Ning -- White, Richard A 3rd -- Fisher, Daniel S -- Quake, Stephen R -- DP1 OD000251/OD/NIH HHS/ -- DP1 OD000251-04/OD/NIH HHS/ -- DP1 OD000251-05/OD/NIH HHS/ -- DP1 OD000251-06/OD/NIH HHS/ -- New York, N.Y. -- Science. 2009 May 8;324(5928):807-10. doi: 10.1126/science.1170020.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biophysics Program, Stanford University, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19423829" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/genetics ; Antibody Diversity ; Base Sequence ; Complementarity Determining Regions/*genetics ; Computational Biology ; Female ; Gene Library ; *Genes, Immunoglobulin Heavy Chain ; Immunoglobulin Heavy Chains/*genetics ; Immunoglobulin Joining Region/genetics ; Immunoglobulin M/*genetics ; Male ; Molecular Sequence Data ; Recombination, Genetic ; Sequence Analysis, DNA ; VDJ Exons ; Zebrafish/genetics/*immunology
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  • 4
    Publication Date: 2009-03-03
    Description: Plants have distinct RNA polymerase complexes (Pol IV and Pol V) with largely unknown roles in maintaining small RNA-associated gene silencing. Curiously, the eudicot Arabidopsis thaliana is not affected when either function is lost. By use of mutation selection and positional cloning, we showed that the largest subunit of the presumed maize Pol IV is involved in paramutation, an inherited epigenetic change facilitated by an interaction between two alleles, as well as normal maize development. Bioinformatics analyses and nuclear run-on transcription assays indicate that Pol IV does not engage in the efficient RNA synthesis typical of the three major eukaryotic DNA-dependent RNA polymerases. These results indicate that Pol IV employs abnormal RNA polymerase activities to achieve genome-wide silencing and that its absence affects both maize development and heritable epigenetic changes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Erhard, Karl F Jr -- Stonaker, Jennifer L -- Parkinson, Susan E -- Lim, Jana P -- Hale, Christopher J -- Hollick, Jay B -- New York, N.Y. -- Science. 2009 Feb 27;323(5918):1201-5. doi: 10.1126/science.1164508.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Plant and Microbial Biology, 111 Koshland Hall, University of California, Berkeley, CA 94720-3102, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19251626" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Sequence ; Base Sequence ; Computational Biology ; DNA-Directed RNA Polymerases/chemistry/genetics/*metabolism ; *Epigenesis, Genetic ; Gene Silencing ; Genes, Plant ; Molecular Sequence Data ; *Mutation ; Phylogeny ; Protein Subunits/chemistry/genetics/metabolism ; RNA, Plant/genetics/metabolism ; RNA, Small Interfering/genetics/metabolism ; Transcription, Genetic ; Zea mays/*enzymology/*genetics/growth & development
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  • 5
    Publication Date: 2009-04-18
    Description: Genes are not simply turned on or off, but instead their expression is fine-tuned to meet the needs of a cell. How genes are modulated so precisely is not well understood. The glucocorticoid receptor (GR) regulates target genes by associating with specific DNA binding sites, the sequences of which differ between genes. Traditionally, these binding sites have been viewed only as docking sites. Using structural, biochemical, and cell-based assays, we show that GR binding sequences, differing by as little as a single base pair, differentially affect GR conformation and regulatory activity. We therefore propose that DNA is a sequence-specific allosteric ligand of GR that tailors the activity of the receptor toward specific target genes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2777810/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2777810/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meijsing, Sebastiaan H -- Pufall, Miles A -- So, Alex Y -- Bates, Darren L -- Chen, Lin -- Yamamoto, Keith R -- GM08537/GM/NIGMS NIH HHS/ -- R01 CA020535/CA/NCI NIH HHS/ -- R01 CA020535-31/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2009 Apr 17;324(5925):407-10. doi: 10.1126/science.1164265.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular and Molecular Pharmacology, University of California, San Francisco, CA 94158, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19372434" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Binding Sites ; Cell Line, Tumor ; Crystallography, X-Ray ; DNA/*chemistry/*metabolism ; Humans ; Ligands ; Models, Molecular ; Mutation ; Protein Conformation ; Protein Isoforms/chemistry/metabolism ; Protein Multimerization ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Rats ; Receptors, Glucocorticoid/chemistry/genetics/*metabolism ; Transcriptional Activation
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  • 6
    Publication Date: 2009-12-08
    Description: Primordial organisms of the putative RNA world would have required polymerase ribozymes able to replicate RNA. Known ribozymes with polymerase activity best approximating that needed for RNA replication contain at their catalytic core the class I RNA ligase, an artificial ribozyme with a catalytic rate among the fastest of known ribozymes. Here we present the 3.0 angstrom crystal structure of this ligase. The architecture resembles a tripod, its three legs converging near the ligation junction. Interacting with this tripod scaffold through a series of 10 minor-groove interactions (including two A-minor triads) is the unpaired segment that contributes to and organizes the active site. A cytosine nucleobase and two backbone phosphates abut the ligation junction; their location suggests a model for catalysis resembling that of proteinaceous polymerases.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3978776/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3978776/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shechner, David M -- Grant, Robert A -- Bagby, Sarah C -- Koldobskaya, Yelena -- Piccirilli, Joseph A -- Bartel, David P -- GM61835/GM/NIGMS NIH HHS/ -- R01 GM061835/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2009 Nov 27;326(5957):1271-5. doi: 10.1126/science.1174676.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whitehead Institute for Biomedical Research and Howard Hughes Medical Institute, 9 Cambridge Center, Cambridge, MA 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965478" target="_blank"〉PubMed〈/a〉
    Keywords: Base Pairing ; Base Sequence ; Catalysis ; Catalytic Domain ; Crystallization ; Crystallography, X-Ray ; DNA-Directed RNA Polymerases/chemistry/metabolism ; Hydrogen Bonding ; Hydrogen-Ion Concentration ; Magnesium/chemistry/metabolism ; Models, Molecular ; Molecular Sequence Data ; Nucleic Acid Conformation ; Polynucleotide Ligases/chemistry/metabolism ; RNA, Catalytic/*chemistry/metabolism ; Ribonucleotides/chemistry/metabolism
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  • 7
    Publication Date: 2009-05-16
    Description: Sequence preferences of DNA binding proteins are a primary mechanism by which cells interpret the genome. Despite the central importance of these proteins in physiology, development, and evolution, comprehensive DNA binding specificities have been determined experimentally for only a few proteins. Here, we used microarrays containing all 10-base pair sequences to examine the binding specificities of 104 distinct mouse DNA binding proteins representing 22 structural classes. Our results reveal a complex landscape of binding, with virtually every protein analyzed possessing unique preferences. Roughly half of the proteins each recognized multiple distinctly different sequence motifs, challenging our molecular understanding of how proteins interact with their DNA binding sites. This complexity in DNA recognition may be important in gene regulation and in the evolution of transcriptional regulatory networks.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2905877/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2905877/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Badis, Gwenael -- Berger, Michael F -- Philippakis, Anthony A -- Talukder, Shaheynoor -- Gehrke, Andrew R -- Jaeger, Savina A -- Chan, Esther T -- Metzler, Genita -- Vedenko, Anastasia -- Chen, Xiaoyu -- Kuznetsov, Hanna -- Wang, Chi-Fong -- Coburn, David -- Newburger, Daniel E -- Morris, Quaid -- Hughes, Timothy R -- Bulyk, Martha L -- R01 HG003985/HG/NHGRI NIH HHS/ -- R01 HG003985-01/HG/NHGRI NIH HHS/ -- R01 HG003985-02/HG/NHGRI NIH HHS/ -- R01 HG003985-03/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2009 Jun 26;324(5935):1720-3. doi: 10.1126/science.1162327. Epub 2009 May 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Banting and Best Department of Medical Research, University of Toronto, Toronto, ON M5S 3E1, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19443739" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Animals ; Base Sequence ; Binding Sites ; DNA/chemistry/*metabolism ; Electrophoretic Mobility Shift Assay ; Gene Expression Regulation ; Gene Regulatory Networks ; Humans ; Mice ; Protein Array Analysis ; Protein Binding ; Protein Structure, Tertiary ; Recombinant Fusion Proteins/chemistry/metabolism ; Transcription Factors/*chemistry/*metabolism
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  • 8
    Publication Date: 2009-09-12
    Description: Miniature inverted repeat transposable elements (MITEs) are widespread in eukaryotic genomes, where they can attain high copy numbers despite a lack of coding capacity. However, little is known about how they originate and amplify. We performed a genome-wide screen of functional interactions between Stowaway MITEs and potential transposases in the rice genome and identified a transpositionally active MITE that possesses key properties that enhance transposition. Although not directly related to its autonomous element, the MITE has less affinity for the transposase than does the autonomous element but lacks a motif repressing transposition in the autonomous element. The MITE contains internal sequences that enhance transposition. These findings suggest that MITEs achieve high transposition activity by scavenging transposases encoded by distantly related and self-restrained autonomous elements.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yang, Guojun -- Nagel, Dawn Holligan -- Feschotte, Cedric -- Hancock, C Nathan -- Wessler, Susan R -- New York, N.Y. -- Science. 2009 Sep 11;325(5946):1391-4. doi: 10.1126/science.1175688.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Plant Biology, University of Georgia, Athens, GA 30602, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19745152" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; *DNA Transposable Elements ; *Genome, Plant ; Inverted Repeat Sequences ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Oryza/*genetics/metabolism ; Transposases/genetics/*metabolism
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  • 9
    Publication Date: 2009-12-08
    Description: Although the nematode Caenorhabditis elegans produces self-fertile hermaphrodites, it descended from a male/female species, so hermaphroditism provides a model for the origin of novel traits. In the related species C. remanei, which has only male and female sexes, lowering the activity of tra-2 by RNA interference created XX animals that made spermatids as well as oocytes, but their spermatids could not activate without the addition of male seminal fluid. However, by lowering the expression of both tra-2 and swm-1, a gene that regulates sperm activation in C. elegans, we produced XX animals with active sperm that were self-fertile. Thus, the evolution of hermaphroditism in Caenorhabditis probably required two steps: a mutation in the sex-determination pathway that caused XX spermatogenesis and a mutation that allowed these spermatids to self-activate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baldi, Chris -- Cho, Soochin -- Ellis, Ronald E -- New York, N.Y. -- Science. 2009 Nov 13;326(5955):1002-5. doi: 10.1126/science.1176013.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Graduate School of Biomedical Sciences, University of Medicine and Dentistry of New Jersey, Stratford, NJ 08084, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965511" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; *Biological Evolution ; Caenorhabditis/anatomy & histology/classification/*genetics/*physiology ; Caenorhabditis elegans/anatomy & histology/classification/*genetics/*physiology ; Caenorhabditis elegans Proteins/genetics/physiology ; Crosses, Genetic ; Disorders of Sex Development/genetics ; Female ; Genes, Helminth ; Germ Cells/physiology ; Male ; Membrane Proteins/genetics/physiology ; Molecular Sequence Data ; *Mutation ; Oogenesis ; Ovulation ; Phylogeny ; Reproduction ; Selection, Genetic ; Sex Determination Processes ; Spermatids/physiology ; Spermatogenesis
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  • 10
    Publication Date: 2009-07-25
    Description: The toolbox of rat genetics currently lacks the ability to introduce site-directed, heritable mutations into the genome to create knockout animals. By using engineered zinc-finger nucleases (ZFNs) designed to target an integrated reporter and two endogenous rat genes, Immunoglobulin M (IgM) and Rab38, we demonstrate that a single injection of DNA or messenger RNA encoding ZFNs into the one-cell rat embryo leads to a high frequency of animals carrying 25 to 100% disruption at the target locus. These mutations are faithfully and efficiently transmitted through the germline. Our data demonstrate the feasibility of targeted gene disruption in multiple rat strains within 4 months time, paving the way to a humanized monoclonal antibody platform and additional human disease models.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2831805/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2831805/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Geurts, Aron M -- Cost, Gregory J -- Freyvert, Yevgeniy -- Zeitler, Bryan -- Miller, Jeffrey C -- Choi, Vivian M -- Jenkins, Shirin S -- Wood, Adam -- Cui, Xiaoxia -- Meng, Xiangdong -- Vincent, Anna -- Lam, Stephen -- Michalkiewicz, Mieczyslaw -- Schilling, Rebecca -- Foeckler, Jamie -- Kalloway, Shawn -- Weiler, Hartmut -- Menoret, Severine -- Anegon, Ignacio -- Davis, Gregory D -- Zhang, Lei -- Rebar, Edward J -- Gregory, Philip D -- Urnov, Fyodor D -- Jacob, Howard J -- Buelow, Roland -- 5P01HL082798-03/HL/NHLBI NIH HHS/ -- 5U01HL066579-08/HL/NHLBI NIH HHS/ -- P01 HL082798/HL/NHLBI NIH HHS/ -- P01 HL082798-03/HL/NHLBI NIH HHS/ -- U01 HL066579/HL/NHLBI NIH HHS/ -- U01 HL066579-08/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2009 Jul 24;325(5939):433. doi: 10.1126/science.1172447.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Human and Molecular Genetics Center, Medical College of Wisconsin, Milwaukee, WI 52336, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19628861" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Dna ; Embryo, Mammalian ; Endodeoxyribonucleases/genetics/*metabolism ; Feasibility Studies ; Female ; *Gene Knockout Techniques ; Green Fluorescent Proteins ; Immunoglobulin M/*genetics ; Male ; *Microinjections ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; RNA, Messenger ; Rats ; *Zinc Fingers/genetics ; rab GTP-Binding Proteins/*genetics
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  • 11
    Publication Date: 2009-01-20
    Description: Combining biomolecular function with integrated circuit technology could usher in a new era of biologically enabled electronics. A key challenge has been coupling different molecular functions to specific chip locations for communication with the circuit. We used spatially confined electric fields to assemble different populations of DNA-coated nanowires to desired positions with an accuracy that enabled postassembly fabrication of contacts to each individual nanowire, with high yield and without loss of DNA function. This combination of off-chip synthesis and biofunctionalization with high-density, heterogeneous assembly and integration at the individual nanowire level points to new ways of incorporating biological functionality with silicon electronics.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2837912/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2837912/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Morrow, Thomas J -- Li, Mingwei -- Kim, Jaekyun -- Mayer, Theresa S -- Keating, Christine D -- R01 EB000268/EB/NIBIB NIH HHS/ -- R01 EB000268-08/EB/NIBIB NIH HHS/ -- New York, N.Y. -- Science. 2009 Jan 16;323(5912):352. doi: 10.1126/science.1165921.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Pennsylvania State University, University Park, PA 16802, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19150837" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; *DNA/chemistry ; Electricity ; Electronics/*instrumentation/methods ; Nanotechnology/methods ; *Nanowires/chemistry ; Oligodeoxyribonucleotides/chemistry
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  • 12
    Publication Date: 2009-12-08
    Description: We report an improved draft nucleotide sequence of the 2.3-gigabase genome of maize, an important crop plant and model for biological research. Over 32,000 genes were predicted, of which 99.8% were placed on reference chromosomes. Nearly 85% of the genome is composed of hundreds of families of transposable elements, dispersed nonuniformly across the genome. These were responsible for the capture and amplification of numerous gene fragments and affect the composition, sizes, and positions of centromeres. We also report on the correlation of methylation-poor regions with Mu transposon insertions and recombination, and copy number variants with insertions and/or deletions, as well as how uneven gene losses between duplicated regions were involved in returning an ancient allotetraploid to a genetically diploid state. These analyses inform and set the stage for further investigations to improve our understanding of the domestication and agricultural improvements of maize.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schnable, Patrick S -- Ware, Doreen -- Fulton, Robert S -- Stein, Joshua C -- Wei, Fusheng -- Pasternak, Shiran -- Liang, Chengzhi -- Zhang, Jianwei -- Fulton, Lucinda -- Graves, Tina A -- Minx, Patrick -- Reily, Amy Denise -- Courtney, Laura -- Kruchowski, Scott S -- Tomlinson, Chad -- Strong, Cindy -- Delehaunty, Kim -- Fronick, Catrina -- Courtney, Bill -- Rock, Susan M -- Belter, Eddie -- Du, Feiyu -- Kim, Kyung -- Abbott, Rachel M -- Cotton, Marc -- Levy, Andy -- Marchetto, Pamela -- Ochoa, Kerri -- Jackson, Stephanie M -- Gillam, Barbara -- Chen, Weizu -- Yan, Le -- Higginbotham, Jamey -- Cardenas, Marco -- Waligorski, Jason -- Applebaum, Elizabeth -- Phelps, Lindsey -- Falcone, Jason -- Kanchi, Krishna -- Thane, Thynn -- Scimone, Adam -- Thane, Nay -- Henke, Jessica -- Wang, Tom -- Ruppert, Jessica -- Shah, Neha -- Rotter, Kelsi -- Hodges, Jennifer -- Ingenthron, Elizabeth -- Cordes, Matt -- Kohlberg, Sara -- Sgro, Jennifer -- Delgado, Brandon -- Mead, Kelly -- Chinwalla, Asif -- Leonard, Shawn -- Crouse, Kevin -- Collura, Kristi -- Kudrna, Dave -- Currie, Jennifer -- He, Ruifeng -- Angelova, Angelina -- Rajasekar, Shanmugam -- Mueller, Teri -- Lomeli, Rene -- Scara, Gabriel -- Ko, Ara -- Delaney, Krista -- Wissotski, Marina -- Lopez, Georgina -- Campos, David -- Braidotti, Michele -- Ashley, Elizabeth -- Golser, Wolfgang -- Kim, HyeRan -- Lee, Seunghee -- Lin, Jinke -- Dujmic, Zeljko -- Kim, Woojin -- Talag, Jayson -- Zuccolo, Andrea -- Fan, Chuanzhu -- Sebastian, Aswathy -- Kramer, Melissa -- Spiegel, Lori -- Nascimento, Lidia -- Zutavern, Theresa -- Miller, Beth -- Ambroise, Claude -- Muller, Stephanie -- Spooner, Will -- Narechania, Apurva -- Ren, Liya -- Wei, Sharon -- Kumari, Sunita -- Faga, Ben -- Levy, Michael J -- McMahan, Linda -- Van Buren, Peter -- Vaughn, Matthew W -- Ying, Kai -- Yeh, Cheng-Ting -- Emrich, Scott J -- Jia, Yi -- Kalyanaraman, Ananth -- Hsia, An-Ping -- Barbazuk, W Brad -- Baucom, Regina S -- Brutnell, Thomas P -- Carpita, Nicholas C -- Chaparro, Cristian -- Chia, Jer-Ming -- Deragon, Jean-Marc -- Estill, James C -- Fu, Yan -- Jeddeloh, Jeffrey A -- Han, Yujun -- Lee, Hyeran -- Li, Pinghua -- Lisch, Damon R -- Liu, Sanzhen -- Liu, Zhijie -- Nagel, Dawn Holligan -- McCann, Maureen C -- SanMiguel, Phillip -- Myers, Alan M -- Nettleton, Dan -- Nguyen, John -- Penning, Bryan W -- Ponnala, Lalit -- Schneider, Kevin L -- Schwartz, David C -- Sharma, Anupma -- Soderlund, Carol -- Springer, Nathan M -- Sun, Qi -- Wang, Hao -- Waterman, Michael -- Westerman, Richard -- Wolfgruber, Thomas K -- Yang, Lixing -- Yu, Yeisoo -- Zhang, Lifang -- Zhou, Shiguo -- Zhu, Qihui -- Bennetzen, Jeffrey L -- Dawe, R Kelly -- Jiang, Jiming -- Jiang, Ning -- Presting, Gernot G -- Wessler, Susan R -- Aluru, Srinivas -- Martienssen, Robert A -- Clifton, Sandra W -- McCombie, W Richard -- Wing, Rod A -- Wilson, Richard K -- New York, N.Y. -- Science. 2009 Nov 20;326(5956):1112-5. doi: 10.1126/science.1178534.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Plant Genomics, Iowa State University, Ames, IA 50011, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965430" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Centromere/genetics ; Chromosome Mapping ; Chromosomes, Plant/genetics ; Crops, Agricultural/genetics ; DNA Copy Number Variations ; DNA Methylation ; DNA Transposable Elements ; DNA, Plant/genetics ; Genes, Plant ; *Genetic Variation ; *Genome, Plant ; Inbreeding ; MicroRNAs/genetics ; Molecular Sequence Data ; Ploidies ; RNA, Plant/genetics ; Recombination, Genetic ; Retroelements ; *Sequence Analysis, DNA ; Zea mays/*genetics
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  • 13
    Publication Date: 2009-06-13
    Description: Several classes of nucleic acid analogs have been reported, but no synthetic informational polymer has yet proven responsive to selection pressures under enzyme-free conditions. Here, we introduce an oligomer family that efficiently self-assembles by means of reversible covalent anchoring of nucleobase recognition units onto simple oligo-dipeptide backbones [thioester peptide nucleic acids (tPNAs)] and undergoes dynamic sequence modification in response to changing templates in solution. The oligomers specifically self-pair with complementary tPNA strands and cross-pair with RNA and DNA in Watson-Crick fashion. Thus, tPNA combines base-pairing interactions with the side-chain functionalities of typical peptides and proteins. These characteristics might prove advantageous for the design or selection of catalytic constructs or biomaterials that are capable of dynamic sequence repair and adaptation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ura, Yasuyuki -- Beierle, John M -- Leman, Luke J -- Orgel, Leslie E -- Ghadiri, M Reza -- New York, N.Y. -- Science. 2009 Jul 3;325(5936):73-7. doi: 10.1126/science.1174577. Epub 2009 Jun 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry and Skaggs Institute for Chemical Biology, Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19520909" target="_blank"〉PubMed〈/a〉
    Keywords: Adenine/chemistry ; Amino Acids/chemistry ; Base Pairing ; Base Sequence ; Biotinylation ; DNA/*chemistry ; Dipeptides/chemistry ; Models, Molecular ; Molecular Structure ; Nucleic Acid Conformation ; Oligonucleotides/chemistry ; Peptide Nucleic Acids/*chemistry ; Peptides/chemistry ; RNA/chemistry
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  • 14
    Publication Date: 2009-04-11
    Description: In vertebrates, the readily apparent left/right (L/R) anatomical asymmetries of the internal organs can be traced to molecular events initiated at or near the time of gastrulation. However, the earliest steps of this process do not seem to be universally conserved. In particular, how this axis is first defined in chicks has remained problematic. Here we show that asymmetric cell rearrangements take place within chick embryos, creating a leftward movement of cells around the node. It is the relative displacement of cells expressing sonic hedgehog (Shh) and fibroblast growth factor 8 (Fgf8) that is responsible for establishing their asymmetric expression patterns. The creation of asymmetric expression domains as a passive effect of cell movements represents an alternative strategy for breaking L/R symmetry in gene activity.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2993078/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2993078/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gros, Jerome -- Feistel, Kerstin -- Viebahn, Christoph -- Blum, Martin -- Tabin, Clifford J -- R01 HD045499/HD/NICHD NIH HHS/ -- R01 HD045499-06/HD/NICHD NIH HHS/ -- R01-HD045499/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 2009 May 15;324(5929):941-4. doi: 10.1126/science.1172478. Epub 2009 Apr 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19359542" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; *Body Patterning ; *Cell Movement ; Chick Embryo ; Fibroblast Growth Factor 8/genetics ; *Gastrulation ; *Gene Expression ; Gene Expression Profiling ; Hedgehog Proteins/genetics ; Molecular Sequence Data ; Organizers, Embryonic/*cytology/embryology/*metabolism ; Primitive Streak/*cytology/embryology/metabolism ; Swine/embryology ; Tissue Culture Techniques
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  • 15
    Publication Date: 2009-12-08
    Description: To study basic principles of transcriptome organization in bacteria, we analyzed one of the smallest self-replicating organisms, Mycoplasma pneumoniae. We combined strand-specific tiling arrays, complemented by transcriptome sequencing, with more than 252 spotted arrays. We detected 117 previously undescribed, mostly noncoding transcripts, 89 of them in antisense configuration to known genes. We identified 341 operons, of which 139 are polycistronic; almost half of the latter show decaying expression in a staircase-like manner. Under various conditions, operons could be divided into 447 smaller transcriptional units, resulting in many alternative transcripts. Frequent antisense transcripts, alternative transcripts, and multiple regulators per gene imply a highly dynamic transcriptome, more similar to that of eukaryotes than previously thought.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guell, Marc -- van Noort, Vera -- Yus, Eva -- Chen, Wei-Hua -- Leigh-Bell, Justine -- Michalodimitrakis, Konstantinos -- Yamada, Takuji -- Arumugam, Manimozhiyan -- Doerks, Tobias -- Kuhner, Sebastian -- Rode, Michaela -- Suyama, Mikita -- Schmidt, Sabine -- Gavin, Anne-Claude -- Bork, Peer -- Serrano, Luis -- New York, N.Y. -- Science. 2009 Nov 27;326(5957):1268-71. doi: 10.1126/science.1176951.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Genomic Regulation (CRG), Universitat Pompeu Fabra, Barcelona, Spain.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965477" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; *Gene Expression Profiling ; *Gene Expression Regulation, Bacterial ; Genes, Bacterial ; *Genome, Bacterial ; Molecular Sequence Data ; Mycoplasma pneumoniae/*genetics/metabolism ; Oligonucleotide Array Sequence Analysis ; Operon ; RNA, Antisense/genetics/metabolism ; RNA, Bacterial/*genetics/metabolism ; RNA, Messenger/genetics/metabolism ; RNA, Untranslated/analysis/*genetics ; *Transcription, Genetic
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  • 16
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-10-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉King, David G -- Kashi, Yechezkel -- New York, N.Y. -- Science. 2009 Oct 9;326(5950):229-30. doi: 10.1126/science.326_229.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anatomy, Southern Illinois University, Carbondale, IL 62901, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19815757" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; DNA/chemistry/*genetics ; Evolution, Molecular ; Mutation ; *Repetitive Sequences, Nucleic Acid
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  • 17
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-08-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Otterstrom, Jason J -- van Oijen, Antoine M -- R01 GM077248/GM/NIGMS NIH HHS/ -- R01 GM077248-03/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 Jul 31;325(5940):547-8. doi: 10.1126/science.1177311.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19644099" target="_blank"〉PubMed〈/a〉
    Keywords: Base Pairing ; Base Sequence ; Catalytic Domain ; DNA/chemistry/*metabolism ; Diffusion ; Nucleosomes/*metabolism ; Optical Tweezers ; RNA Polymerase II/chemistry/*metabolism ; RNA, Messenger/metabolism ; Templates, Genetic ; *Transcription, Genetic
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  • 18
    Publication Date: 2009-07-18
    Description: Selenocysteine is the only genetically encoded amino acid in humans whose biosynthesis occurs on its cognate transfer RNA (tRNA). O-Phosphoseryl-tRNA:selenocysteinyl-tRNA synthase (SepSecS) catalyzes the final step of selenocysteine formation by a poorly understood tRNA-dependent mechanism. The crystal structure of human tRNA(Sec) in complex with SepSecS, phosphoserine, and thiophosphate, together with in vivo and in vitro enzyme assays, supports a pyridoxal phosphate-dependent mechanism of Sec-tRNA(Sec) formation. Two tRNA(Sec) molecules, with a fold distinct from other canonical tRNAs, bind to each SepSecS tetramer through their 13-base pair acceptor-TPsiC arm (where Psi indicates pseudouridine). The tRNA binding is likely to induce a conformational change in the enzyme's active site that allows a phosphoserine covalently attached to tRNA(Sec), but not free phosphoserine, to be oriented properly for the reaction to occur.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2857584/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2857584/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palioura, Sotiria -- Sherrer, R Lynn -- Steitz, Thomas A -- Soll, Dieter -- Simonovic, Miljan -- R01 GM022854/GM/NIGMS NIH HHS/ -- R01 GM022854-33/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2009 Jul 17;325(5938):321-5. doi: 10.1126/science.1173755.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19608919" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acyl-tRNA Synthetases/*chemistry/*metabolism ; Base Sequence ; Biocatalysis ; Catalytic Domain ; Crystallography, X-Ray ; Humans ; Hydrogen Bonding ; Models, Molecular ; Molecular Sequence Data ; Nucleic Acid Conformation ; Phosphates/chemistry/metabolism ; Phosphoserine/chemistry/metabolism ; Protein Conformation ; Protein Multimerization ; Protein Structure, Secondary ; RNA, Transfer, Amino Acid-Specific/*chemistry/*metabolism ; RNA, Transfer, Amino Acyl/*metabolism ; Selenocysteine/*biosynthesis/genetics
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  • 19
    Publication Date: 2009-08-08
    Description: Pathogens can use DNA recombination to promote antigenic variation (Av) of surface structures to avoid immune detection. We identified a cis-acting DNA sequence near the antigenically variable pilin locus of the human pathogen, Neisseria gonorrhoeae. This 16-base pair guanine (G)-rich sequence was required for pilin Av and formed a guanine quartet (G4) structure in vitro. Individual mutations that disrupted the structure also blocked pilin Av and prevented nicks required for recombination from occurring within the G4 region. A compound that binds and stabilizes G4 structures also inhibited pilin Av and prevented nicks from occurring on the G-rich strand. This site constitutes a recombination initiation sequence/structure that directs gene conversion to a specific chromosomal locus.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2803317/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2803317/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cahoon, Laty A -- Seifert, H Steven -- R01 AI044239/AI/NIAID NIH HHS/ -- R01 AI044239-08/AI/NIAID NIH HHS/ -- R01 AI044239-09/AI/NIAID NIH HHS/ -- R01 AI044239-10/AI/NIAID NIH HHS/ -- R01 AI055977/AI/NIAID NIH HHS/ -- R01 AI055977-03/AI/NIAID NIH HHS/ -- R01 AI055977-04/AI/NIAID NIH HHS/ -- R01 AI055977-05/AI/NIAID NIH HHS/ -- R01AI044239/AI/NIAID NIH HHS/ -- R01AI055977/AI/NIAID NIH HHS/ -- R37 AI033493/AI/NIAID NIH HHS/ -- R37 AI033493-14/AI/NIAID NIH HHS/ -- R37 AI033493-15/AI/NIAID NIH HHS/ -- R37 AI033493-16/AI/NIAID NIH HHS/ -- R37AI033493/AI/NIAID NIH HHS/ -- T32GM08061/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 Aug 7;325(5941):764-7. doi: 10.1126/science.1175653.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Northwestern University Feinberg School of Medicine, 303 East Chicago Avenue, Chicago, IL 60611, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19661435" target="_blank"〉PubMed〈/a〉
    Keywords: *Antigenic Variation ; Base Pairing ; Base Sequence ; DNA Damage ; DNA, Bacterial/chemistry/*genetics ; Fimbriae Proteins/chemistry/*genetics/*immunology ; Fimbriae, Bacterial ; Gene Conversion ; Guanine/chemistry ; Mesoporphyrins/metabolism/pharmacology ; Neisseria gonorrhoeae/*genetics/growth & development/*immunology ; Oligodeoxyribonucleotides/chemistry ; Recombination, Genetic
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  • 20
    Publication Date: 2009-02-14
    Description: Infection by human rhinovirus (HRV) is a major cause of upper and lower respiratory tract disease worldwide and displays considerable phenotypic variation. We examined diversity by completing the genome sequences for all known serotypes (n = 99). Superimposition of capsid crystal structure and optimal-energy RNA configurations established alignments and phylogeny. These revealed conserved motifs; clade-specific diversity, including a potential newly identified species (HRV-D); mutations in field isolates; and recombination. In analogy with poliovirus, a hypervariable 5' untranslated region tract may affect virulence. A configuration consistent with nonscanning internal ribosome entry was found in all HRVs and may account for rapid translation. The data density from complete sequences of the reference HRVs provided high resolution for this degree of modeling and serves as a platform for full genome-based epidemiologic studies and antiviral or vaccine development.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3923423/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3923423/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palmenberg, Ann C -- Spiro, David -- Kuzmickas, Ryan -- Wang, Shiliang -- Djikeng, Appolinaire -- Rathe, Jennifer A -- Fraser-Liggett, Claire M -- Liggett, Stephen B -- R01 HL091490/HL/NHLBI NIH HHS/ -- U19 AI070503/AI/NIAID NIH HHS/ -- U19-AI070503/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2009 Apr 3;324(5923):55-9. doi: 10.1126/science.1165557. Epub 2009 Feb 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Molecular Virology, University of Wisconsin, Madison, WI 53706, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19213880" target="_blank"〉PubMed〈/a〉
    Keywords: 3' Untranslated Regions ; 5' Untranslated Regions ; Base Composition ; Base Sequence ; Codon, Terminator ; *Evolution, Molecular ; *Genome, Viral ; Humans ; Molecular Sequence Data ; Mutation ; Nucleic Acid Conformation ; Open Reading Frames ; Phylogeny ; Picornaviridae Infections/virology ; Polyproteins/biosynthesis/chemistry/genetics ; RNA, Viral/chemistry/*genetics ; Recombination, Genetic ; Respiratory Tract Infections/virology ; Rhinovirus/classification/*genetics/ultrastructure ; Sequence Alignment ; Sequence Analysis, RNA ; Serotyping ; Viral Proteins/biosynthesis/chemistry/genetics
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  • 21
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-08-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2009 Aug 7;325(5941):664. doi: 10.1126/science.325_664.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19661393" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; *Patents as Topic ; *Phylogeny ; *Sequence Analysis, DNA ; United States
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  • 22
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-04-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sherman, William -- New York, N.Y. -- Science. 2009 Apr 3;324(5923):46-7. doi: 10.1126/science.1172136.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA. wsherman@bnl.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19342576" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; *DNA/chemistry ; Furocoumarins/chemistry ; Hot Temperature ; Nanotechnology/*methods ; Nucleic Acid Conformation ; Nucleic Acid Denaturation ; Nucleic Acid Hybridization ; Ultraviolet Rays
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  • 23
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-12-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Feuillet, Catherine -- Eversole, Kellye -- New York, N.Y. -- Science. 2009 Nov 20;326(5956):1071-2. doi: 10.1126/science.1183463.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉UMR INRA-UBP, Genetique, Diversite et Ecophysiologie des Cereales, 63100 Clermont-Ferrand, France. catherine.feuillet@clermont.inra.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965417" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Chromosome Mapping ; Crops, Agricultural/genetics ; Genes, Plant ; Genetic Variation ; *Genome, Plant ; Haplotypes ; Hybrid Vigor ; Hybridization, Genetic ; *Sequence Analysis, DNA ; Zea mays/*genetics/physiology
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  • 24
    Publication Date: 2009-04-25
    Description: The script of the ancient Indus civilization remains undeciphered. The hypothesis that the script encodes language has recently been questioned. Here, we present evidence for the linguistic hypothesis by showing that the script's conditional entropy is closer to those of natural languages than various types of nonlinguistic systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rao, Rajesh P N -- Yadav, Nisha -- Vahia, Mayank N -- Joglekar, Hrishikesh -- Adhikari, R -- Mahadevan, Iravatham -- New York, N.Y. -- Science. 2009 May 29;324(5931):1165. doi: 10.1126/science.1170391. Epub 2009 Apr 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Computer Science and Engineering, University of Washington, Seattle, WA 98195, USA. rao@cs.washington.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19389998" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Chromosomes, Human, Pair 2/genetics ; Escherichia coli Proteins/chemistry ; History, Ancient ; Humans ; India ; Language ; Linguistics/*history ; Pakistan ; Programming Languages ; Writing/*history
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  • 25
    Publication Date: 2009-11-11
    Description: Genetic changes contributing to phenotypic differences within or between species have been identified for a handful of traits, but the relationship between alleles underlying intraspecific polymorphism and interspecific divergence is largely unknown. We found that noncoding changes in the tan gene, as well as changes linked to the ebony gene, contribute to pigmentation divergence between closely related Drosophila species. Moreover, we found that alleles linked to tan and ebony fixed in one Drosophila species also contribute to variation within another species, and that multiple genotypes underlie similar phenotypes even within the same population. These alleles appear to predate speciation, which suggests that standing genetic variation present in the common ancestor gave rise to both intraspecific polymorphism and interspecific divergence.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wittkopp, Patricia J -- Stewart, Emma E -- Arnold, Lisa L -- Neidert, Adam H -- Haerum, Belinda K -- Thompson, Elizabeth M -- Akhras, Saleh -- Smith-Winberry, Gabriel -- Shefner, Laura -- New York, N.Y. -- Science. 2009 Oct 23;326(5952):540-4. doi: 10.1126/science.1176980.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI 48109, USA. wittkopp@umich.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19900891" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Animals, Genetically Modified ; Base Sequence ; Chromosomal Proteins, Non-Histone/*genetics/metabolism ; Crosses, Genetic ; DNA-Binding Proteins/*genetics/metabolism ; Drosophila/classification/*genetics/growth & development/metabolism ; Drosophila Proteins/*genetics/metabolism ; Female ; Gene Expression ; Gene Expression Regulation ; Genes, Insect ; Genetic Speciation ; Genotype ; Introns ; Male ; Molecular Sequence Data ; Phenotype ; Pigmentation/*genetics ; *Polymorphism, Genetic ; Quantitative Trait Loci ; Species Specificity
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  • 26
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-03-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Guanyang -- New York, N.Y. -- Science. 2009 Mar 27;323(5922):1672; author reply 1672. doi: 10.1126/science.323.5922.1672.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19325099" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Biodiversity ; *Biological Specimen Banks ; Databases, Factual ; *Databases, Nucleic Acid ; National Library of Medicine (U.S.) ; *Natural History ; United States
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  • 27
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-07-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Monroe, Don -- New York, N.Y. -- Science. 2009 Jul 10;325(5937):142-3. doi: 10.1126/science.325_142.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19589978" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; *Conserved Sequence ; DNA/*genetics/metabolism ; DNA, Intergenic/genetics ; DNA-Binding Proteins/metabolism ; Evolution, Molecular ; Genes, Essential ; *Genome, Human ; Humans ; Mice ; Mutation ; RNA/genetics ; Regulatory Sequences, Nucleic Acid
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  • 28
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-11-26
    Description: TAL effectors of plant pathogenic bacteria in the genus Xanthomonas bind host DNA and activate genes that contribute to disease or turn on defense. Target specificity depends on an effector-variable number of typically 34 amino acid repeats, but the mechanism of recognition is not understood. We show that a repeat-variable pair of residues specifies the nucleotides in the target site, one pair to one nucleotide, with no apparent context dependence. Our finding represents a previously unknown mechanism for protein-DNA recognition that explains TAL effector specificity, enables target site prediction, and opens prospects for use of TAL effectors in research and biotechnology.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moscou, Matthew J -- Bogdanove, Adam J -- New York, N.Y. -- Science. 2009 Dec 11;326(5959):1501. doi: 10.1126/science.1178817. Epub .〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Plant Pathology and Bioinformatics and Computational Biology Program, Iowa State University, Ames, IA 50011, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19933106" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Bacterial Proteins/chemistry/metabolism ; Base Sequence ; Computational Biology ; DNA, Plant/chemistry/genetics/*metabolism ; DNA-Binding Proteins/*chemistry/*metabolism ; Molecular Sequence Data ; Nucleotides/metabolism ; Oryza/*genetics/microbiology ; Promoter Regions, Genetic ; Protein Array Analysis ; Repetitive Sequences, Amino Acid ; *Transcriptional Activation ; Xanthomonas/*metabolism/pathogenicity
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  • 29
    Publication Date: 2009-01-20
    Description: Retroviruses have the potential to acquire host cell-derived genetic material during reverse transcription and can integrate into the genomes of larger, more complex DNA viruses. In contrast, RNA viruses were believed not to integrate into the host's genome under any circumstances. We found that illegitimate recombination between an exogenous nonretroviral RNA virus, lymphocytic choriomeningitis virus, and the endogenous intracisternal A-type particle (IAP) retrotransposon occurred and led to reverse transcription of exogenous viral RNA. The resulting complementary DNA was integrated into the host's genome with an IAP element. Thus, RNA viruses should be closely scrutinized for any capacity to interact with endogenous retroviral elements before their approval for therapeutic use in humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Geuking, Markus B -- Weber, Jacqueline -- Dewannieux, Marie -- Gorelik, Elieser -- Heidmann, Thierry -- Hengartner, Hans -- Zinkernagel, Rolf M -- Hangartner, Lars -- New York, N.Y. -- Science. 2009 Jan 16;323(5912):393-6. doi: 10.1126/science.1167375.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Experimental Immunology, University Hospital Zurich, Schmelzbergstrasse 12, 8091 Zurich, Switzerland. geuking@mcmaster.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19150848" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arenaviridae Infections/virology ; Base Sequence ; Cell Line ; DNA, Complementary/*genetics ; Genes, Intracisternal A-Particle/*genetics ; Glycoproteins/genetics ; Humans ; Lymphocytic choriomeningitis virus/*genetics ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Polymerase Chain Reaction ; RNA, Viral/*genetics ; *Recombination, Genetic ; *Reverse Transcription ; Transfection ; Viral Proteins/genetics ; *Virus Integration
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  • 30
    Publication Date: 2009-05-30
    Description: Adenosine-to-inosine (A-to-I) RNA editing leads to transcriptome diversity and is important for normal brain function. To date, only a handful of functional sites have been identified in mammals. We developed an unbiased assay to screen more than 36,000 computationally predicted nonrepetitive A-to-I sites using massively parallel target capture and DNA sequencing. A comprehensive set of several hundred human RNA editing sites was detected by comparing genomic DNA with RNAs from seven tissues of a single individual. Specificity of our profiling was supported by observations of enrichment with known features of targets of adenosine deaminases acting on RNA (ADAR) and validation by means of capillary sequencing. This efficient approach greatly expands the repertoire of RNA editing targets and can be applied to studies involving RNA editing-related human diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Jin Billy -- Levanon, Erez Y -- Yoon, Jung-Ki -- Aach, John -- Xie, Bin -- Leproust, Emily -- Zhang, Kun -- Gao, Yuan -- Church, George M -- New York, N.Y. -- Science. 2009 May 29;324(5931):1210-3. doi: 10.1126/science.1170995.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19478186" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Deaminase/metabolism ; Adrenal Glands/metabolism ; Alu Elements ; Animals ; Base Sequence ; Brain/*metabolism ; DNA/*genetics ; DNA, Complementary ; *Genome, Human ; Humans ; Intestine, Small/metabolism ; Mice ; *RNA Editing ; RNA, Double-Stranded/chemistry/genetics/metabolism ; RNA, Messenger/chemistry/genetics/*metabolism ; RNA-Binding Proteins ; Sequence Analysis, DNA
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  • 31
    Publication Date: 2009-12-08
    Description: Rates and mechanisms of intron gain and loss have traditionally been inferred from alignments of highly conserved genes sampled from phylogenetically distant taxa. We report a population-genomic approach that detected 24 discordant intron/exon boundaries between the whole-genome sequences of two Daphnia pulex isolates. Sequencing of presence/absence loci across a collection of D. pulex isolates and outgroup Daphnia species shows that most polymorphisms are a consequence of recent gains, with parallel gains often occurring at the same locations in independent allelic lineages. More than half of the recent gains are associated with short sequence repeats, suggesting an origin via repair of staggered double-strand breaks. By comparing the allele-frequency spectrum of intron-gain alleles with that for derived single-base substitutions, we also provide evidence that newly arisen introns are intrinsically deleterious and tend to accumulate in population-genetic settings where random genetic drift is a relatively strong force.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3878872/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3878872/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Wenli -- Tucker, Abraham E -- Sung, Way -- Thomas, W Kelley -- Lynch, Michael -- R01 GM036827/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 Nov 27;326(5957):1260-2. doi: 10.1126/science.1179302.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biology Department, Indiana University, Bloomington, IN 47405, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965475" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Base Sequence ; Computational Biology ; DNA Breaks, Double-Stranded ; DNA Repair ; Daphnia/*genetics ; Exons ; *Genome ; *Introns ; Molecular Sequence Data ; Phylogeny ; Polymorphism, Genetic ; Polymorphism, Single Nucleotide ; Repetitive Sequences, Nucleic Acid ; Time Factors
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  • 32
    Publication Date: 2009-01-10
    Description: Strict one-to-one correspondence between codons and amino acids is thought to be an essential feature of the genetic code. However, we report that one codon can code for two different amino acids with the choice of the inserted amino acid determined by a specific 3' untranslated region structure and location of the dual-function codon within the messenger RNA (mRNA). We found that the codon UGA specifies insertion of selenocysteine and cysteine in the ciliate Euplotes crassus, that the dual use of this codon can occur even within the same gene, and that the structural arrangements of Euplotes mRNA preserve location-dependent dual function of UGA when expressed in mammalian cells. Thus, the genetic code supports the use of one codon to code for multiple amino acids.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3088105/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3088105/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Turanov, Anton A -- Lobanov, Alexey V -- Fomenko, Dmitri E -- Morrison, Hilary G -- Sogin, Mitchell L -- Klobutcher, Lawrence A -- Hatfield, Dolph L -- Gladyshev, Vadim N -- AI058054/AI/NIAID NIH HHS/ -- GM061603/GM/NIGMS NIH HHS/ -- GM065204/GM/NIGMS NIH HHS/ -- R01 GM061603/GM/NIGMS NIH HHS/ -- R01 GM061603-04S2/GM/NIGMS NIH HHS/ -- ZIA BC010767-03/Intramural NIH HHS/ -- New York, N.Y. -- Science. 2009 Jan 9;323(5911):259-61. doi: 10.1126/science.1164748.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Redox Biology Center, University of Nebraska, Lincoln, NE 68588, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19131629" target="_blank"〉PubMed〈/a〉
    Keywords: 3' Untranslated Regions ; Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; Codon/*genetics ; Codon, Terminator/*genetics ; Cysteine/*genetics/metabolism ; Euplotes/chemistry/*genetics ; *Genetic Code ; Humans ; Molecular Sequence Data ; Mutation ; Protozoan Proteins/biosynthesis/chemistry/genetics ; RNA, Protozoan/genetics/metabolism ; RNA, Transfer, Amino Acid-Specific/chemistry/genetics ; RNA, Transfer, Cys/chemistry/genetics ; Recombinant Fusion Proteins/metabolism ; Selenocysteine/*genetics/metabolism ; Selenoproteins/biosynthesis/chemistry/*genetics
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  • 33
    Publication Date: 2009-08-08
    Description: Protein synthesis involves the accurate attachment of amino acids to their matching transfer RNA (tRNA) molecules. Mistranslating the amino acids serine or glycine for alanine is prevented by the function of independent but collaborative aminoacylation and editing domains of alanyl-tRNA synthetases (AlaRSs). We show that the C-Ala domain plays a key role in AlaRS function. The C-Ala domain is universally tethered to the editing domain both in AlaRS and in many homologous free-standing editing proteins. Crystal structure and functional analyses showed that C-Ala forms an ancient single-stranded nucleic acid binding motif that promotes cooperative binding of both aminoacylation and editing domains to tRNA(Ala). In addition, C-Ala may have played an essential role in the evolution of AlaRSs by coupling aminoacylation to editing to prevent mistranslation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4559334/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4559334/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guo, Min -- Chong, Yeeting E -- Beebe, Kirk -- Shapiro, Ryan -- Yang, Xiang-Lei -- Schimmel, Paul -- GM 15539/GM/NIGMS NIH HHS/ -- R01 GM015539/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 Aug 7;325(5941):744-7. doi: 10.1126/science.1174343.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Skaggs Institute for Chemical Biology and the Department of Molecular Biology, The Scripps Research Institute, BCC-379, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19661429" target="_blank"〉PubMed〈/a〉
    Keywords: Alanine-tRNA Ligase/*chemistry/*metabolism ; Amino Acid Motifs ; Amino Acid Sequence ; Bacteria/enzymology ; Base Sequence ; Crystallography, X-Ray ; Escherichia coli Proteins/chemistry/metabolism ; Evolution, Molecular ; Models, Molecular ; Molecular Sequence Data ; Nucleic Acid Conformation ; Phylogeny ; Protein Structure, Secondary ; Protein Structure, Tertiary ; RNA, Bacterial/chemistry/metabolism ; RNA, Transfer, Ala/*chemistry/*metabolism ; RNA, Transfer, Amino Acyl/chemistry/metabolism ; *Transfer RNA Aminoacylation
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  • 34
    Publication Date: 2009-09-19
    Description: Retroviruses can leave a "fossil record" in their hosts' genomes in the form of endogenous retroviruses. Foamy viruses, complex retroviruses that infect mammals, have been notably absent from this record. We have found an endogenous foamy virus within the genomes of sloths and show that foamy viruses were infecting mammals more than 100 million years ago and codiverged with their hosts across an entire geological era. Our analysis highlights the role of evolutionary constraint in maintaining viral genome structure and indicates that accessory genes and mammalian mechanisms of innate immunity are the products of macroevolutionary conflict played out over a geological time scale.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Katzourakis, Aris -- Gifford, Robert J -- Tristem, Michael -- Gilbert, M Thomas P -- Pybus, Oliver G -- New York, N.Y. -- Science. 2009 Sep 18;325(5947):1512. doi: 10.1126/science.1174149.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Zoology Department, University of Oxford, Oxford OX1 3PS, UK. aris.katzourakis@zoo.ox.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19762636" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; *Biological Evolution ; Endogenous Retroviruses/classification/*genetics ; *Evolution, Molecular ; Genome ; Genome, Viral ; Immunity, Innate ; Molecular Sequence Data ; Phylogeny ; Retroviridae Infections/veterinary/virology ; Sloths/classification/*genetics/immunology/*virology ; Spumavirus/classification/*genetics ; Time
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  • 35
    Publication Date: 2009-03-07
    Description: Genome-wide association studies (GWASs) are regularly used to map genomic regions contributing to common human diseases, but they often do not identify the precise causative genes and sequence variants. To identify causative type 1 diabetes (T1D) variants, we resequenced exons and splice sites of 10 candidate genes in pools of DNA from 480 patients and 480 controls and tested their disease association in over 30,000 participants. We discovered four rare variants that lowered T1D risk independently of each other (odds ratio = 0.51 to 0.74; P = 1.3 x 10(-3) to 2.1 x 10(-16)) in IFIH1 (interferon induced with helicase C domain 1), a gene located in a region previously associated with T1D by GWASs. These variants are predicted to alter the expression and structure of IFIH1 [MDA5 (melanoma differentiation-associated protein 5)], a cytoplasmic helicase that mediates induction of interferon response to viral RNA. This finding firmly establishes the role of IFIH1 in T1D and demonstrates that resequencing studies can pinpoint disease-causing genes in genomic regions initially identified by GWASs.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2707798/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2707798/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nejentsev, Sergey -- Walker, Neil -- Riches, David -- Egholm, Michael -- Todd, John A -- 061858/Wellcome Trust/United Kingdom -- 079895/Wellcome Trust/United Kingdom -- G0000934/Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2009 Apr 17;324(5925):387-9. doi: 10.1126/science.1167728. Epub 2009 Mar 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Juvenile Diabetes Research Foundation/Wellcome Trust Diabetes and Inflammation Laboratory, Cambridge Institute for Medical Research, University of Cambridge, Cambridge, CB2 0XY, UK. sn262@cam.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19264985" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Case-Control Studies ; Codon, Nonsense ; DEAD-box RNA Helicases/chemistry/*genetics/metabolism ; Diabetes Mellitus, Type 1/*genetics ; Gene Frequency ; *Genetic Predisposition to Disease ; Genetic Variation ; Genome-Wide Association Study ; Humans ; Linkage Disequilibrium ; Molecular Sequence Data ; *Polymorphism, Single Nucleotide ; RNA Splice Sites ; Risk ; Risk Factors ; Sequence Analysis, DNA
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  • 36
    Publication Date: 2009-10-10
    Description: Chronic fatigue syndrome (CFS) is a debilitating disease of unknown etiology that is estimated to affect 17 million people worldwide. Studying peripheral blood mononuclear cells (PBMCs) from CFS patients, we identified DNA from a human gammaretrovirus, xenotropic murine leukemia virus-related virus (XMRV), in 68 of 101 patients (67%) as compared to 8 of 218 (3.7%) healthy controls. Cell culture experiments revealed that patient-derived XMRV is infectious and that both cell-associated and cell-free transmission of the virus are possible. Secondary viral infections were established in uninfected primary lymphocytes and indicator cell lines after their exposure to activated PBMCs, B cells, T cells, or plasma derived from CFS patients. These findings raise the possibility that XMRV may be a contributing factor in the pathogenesis of CFS.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lombardi, Vincent C -- Ruscetti, Francis W -- Das Gupta, Jaydip -- Pfost, Max A -- Hagen, Kathryn S -- Peterson, Daniel L -- Ruscetti, Sandra K -- Bagni, Rachel K -- Petrow-Sadowski, Cari -- Gold, Bert -- Dean, Michael -- Silverman, Robert H -- Mikovits, Judy A -- CA104943/CA/NCI NIH HHS/ -- HHSN26120080001E/PHS HHS/ -- New York, N.Y. -- Science. 2009 Oct 23;326(5952):585-9. doi: 10.1126/science.1179052. Epub 2009 Oct 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whittemore Peterson Institute, Reno, NV 89557, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19815723" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Viral/blood ; B-Lymphocytes/immunology/virology ; Base Sequence ; Cell Line ; Cell Line, Tumor ; Coculture Techniques ; DNA/genetics ; Fatigue Syndrome, Chronic/*virology ; Gammaretrovirus/genetics/immunology/*isolation & purification/physiology ; Gene Products, env/analysis ; Gene Products, gag/analysis ; Genome, Viral ; Humans ; Leukocytes, Mononuclear/*virology ; Lymphocyte Activation ; Male ; Mice ; Molecular Sequence Data ; Prostatic Neoplasms/virology ; Retroviridae Infections/epidemiology/transmission/*virology ; T-Lymphocytes/immunology/virology ; Tumor Virus Infections/epidemiology/transmission/*virology
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  • 37
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-08-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thomas, Claire -- New York, N.Y. -- Science. 2009 Jul 31;325(5940):526. doi: 10.1126/science.325_526.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19644082" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA Primers ; DNA, Chloroplast/*genetics ; *Genes, Plant ; Genetic Markers ; Plants/*classification/*genetics
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  • 38
    Publication Date: 2009-09-12
    Description: Methylation of ribosomal RNA (rRNA) is required for optimal protein synthesis. Multiple 2'-O-ribose methylations are carried out by box C/D guide ribonucleoproteins [small ribonucleoproteins (sRNPs) and small nucleolar ribonucleoproteins (snoRNPs)], which are conserved from archaea to eukaryotes. Methylation is dictated by base pairing between the specific guide RNA component of the sRNP or snoRNP and the target rRNA. We determined the structure of a reconstituted and catalytically active box C/D sRNP from the archaeon Methanocaldococcus jannaschii by single-particle electron microscopy. We found that archaeal box C/D sRNPs unexpectedly formed a dimeric structure with an alternative organization of their RNA and protein components that challenges the conventional view of their architecture. Mutational analysis demonstrated that this di-sRNP structure was relevant for the enzymatic function of archaeal box C/D sRNPs.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2975540/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2975540/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bleichert, Franziska -- Gagnon, Keith T -- Brown, Bernard A 2nd -- Maxwell, E Stuart -- Leschziner, Andres E -- Unger, Vinzenz M -- Baserga, Susan J -- R01 GM052581/GM/NIGMS NIH HHS/ -- R01 GM052581-15/GM/NIGMS NIH HHS/ -- R01GM52581/GM/NIGMS NIH HHS/ -- R01GM69699/GM/NIGMS NIH HHS/ -- RR19895/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2009 Sep 11;325(5946):1384-7. doi: 10.1126/science.1176099.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Yale University School of Medicine, New Haven, CT 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19745151" target="_blank"〉PubMed〈/a〉
    Keywords: Archaeal Proteins/*chemistry/metabolism/ultrastructure ; Base Sequence ; Chromosomal Proteins, Non-Histone/*chemistry ; Methanococcales/*chemistry ; Microscopy, Electron ; Models, Molecular ; Molecular Weight ; Nucleic Acid Conformation ; Protein Multimerization ; Protein Structure, Quaternary ; Protein Structure, Tertiary ; RNA, Archaeal/*chemistry/ultrastructure ; Ribonucleoproteins/*chemistry/metabolism/ultrastructure
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  • 39
    Publication Date: 2009-11-26
    Description: The pathogenicity of many bacteria depends on the injection of effector proteins via type III secretion into eukaryotic cells in order to manipulate cellular processes. TAL (transcription activator-like) effectors from plant pathogenic Xanthomonas are important virulence factors that act as transcriptional activators in the plant cell nucleus, where they directly bind to DNA via a central domain of tandem repeats. Here, we show how target DNA specificity of TAL effectors is encoded. Two hypervariable amino acid residues in each repeat recognize one base pair in the target DNA. Recognition sequences of TAL effectors were predicted and experimentally confirmed. The modular protein architecture enabled the construction of artificial effectors with new specificities. Our study describes the functionality of a distinct type of DNA binding domain and allows the design of DNA binding domains for biotechnology.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boch, Jens -- Scholze, Heidi -- Schornack, Sebastian -- Landgraf, Angelika -- Hahn, Simone -- Kay, Sabine -- Lahaye, Thomas -- Nickstadt, Anja -- Bonas, Ulla -- New York, N.Y. -- Science. 2009 Dec 11;326(5959):1509-12. doi: 10.1126/science.1178811. Epub .〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Institute of Biology, Martin-Luther-University Halle-Wittenberg, Weinbergweg 10, D-06099 Halle (Saale) Germany. jens.boch@genetik.uni-halle.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19933107" target="_blank"〉PubMed〈/a〉
    Keywords: *Amino Acid Motifs ; Amino Acid Sequence ; Arabidopsis/genetics ; Bacterial Proteins/chemistry/metabolism ; Base Pairing ; Base Sequence ; Biotechnology ; Capsicum/genetics ; DNA, Plant/*chemistry/*metabolism ; DNA-Binding Proteins/*chemistry/*metabolism ; Genes, Plant ; Models, Biological ; Molecular Sequence Data ; Promoter Regions, Genetic ; Protein Binding ; Repetitive Sequences, Amino Acid ; Tobacco/genetics ; Transcription Factors/chemistry/metabolism ; *Transcriptional Activation ; Xanthomonas/*metabolism/pathogenicity
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  • 40
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 2009-04-04
    Description: A substantial challenge in engineering molecular motors is designing mechanisms to coordinate the motion between multiple domains of the motor so as to bias random thermal motion. For bipedal motors, this challenge takes the form of coordinating the movement of the biped's legs so that they can move in a synchronized fashion. To address this problem, we have constructed an autonomous DNA bipedal walker that coordinates the action of its two legs by cyclically catalyzing the hybridization of metastable DNA fuel strands. This process leads to a chemically ratcheted walk along a directionally polar DNA track. By covalently cross-linking aliquots of the walker to its track in successive walking states, we demonstrate that this Brownian motor can complete a full walking cycle on a track whose length could be extended for longer walks. We believe that this study helps to uncover principles behind the design of unidirectional devices that can function without intervention. This device should be able to fulfill roles that entail the performance of useful mechanical work on the nanometer scale.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3470906/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3470906/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Omabegho, Tosan -- Sha, Ruojie -- Seeman, Nadrian C -- R37 GM029554/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 Apr 3;324(5923):67-71. doi: 10.1126/science.1170336.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19342582" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Binding Sites ; DNA/*chemistry ; DNA, Single-Stranded/*chemistry ; Furocoumarins/chemistry ; Inverted Repeat Sequences ; Nanotechnology/methods ; Nucleic Acid Conformation ; Nucleic Acid Denaturation ; Nucleic Acid Hybridization ; Ultraviolet Rays
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  • 41
    Publication Date: 2009-05-23
    Description: Integrons are found in the genome of hundreds of environmental bacteria but are mainly known for their role in the capture and spread of antibiotic resistance determinants among Gram-negative pathogens. We report a direct link between this system and the ubiquitous SOS response. We found that LexA controlled expression of most integron integrases and consequently regulated cassette recombination. This regulatory coupling enhanced the potential for cassette swapping and capture in cells under stress, while minimizing cassette rearrangements or loss in constant environments. This finding exposes integrons as integrated adaptive systems and has implications for antibiotic treatment policies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guerin, Emilie -- Cambray, Guillaume -- Sanchez-Alberola, Neus -- Campoy, Susana -- Erill, Ivan -- Da Re, Sandra -- Gonzalez-Zorn, Bruno -- Barbe, Jordi -- Ploy, Marie-Cecile -- Mazel, Didier -- New York, N.Y. -- Science. 2009 May 22;324(5930):1034. doi: 10.1126/science.1172914.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Universite de Limoges, Faculte de Medecine, EA3175, INSERM, Equipe Avenir, 87000 Limoges, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19460999" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/metabolism ; Base Sequence ; Binding Sites ; Drug Resistance, Bacterial/genetics ; Escherichia coli/*genetics/metabolism ; Gene Expression Regulation, Bacterial ; Integrases/genetics ; Integrons/*genetics ; Molecular Sequence Data ; Promoter Regions, Genetic ; *Recombination, Genetic ; *SOS Response (Genetics) ; Serine Endopeptidases/metabolism ; Vibrio cholerae/*genetics/metabolism
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  • 42
    Publication Date: 2009-09-26
    Description: Metabolic plasticity, which largely relies on the creation of new genes, is an essential feature of plant adaptation and speciation and has led to the evolution of large gene families. A typical example is provided by the diversification of the cytochrome P450 enzymes in plants. We describe here a retroposition, neofunctionalization, and duplication sequence that, via selective and local amino acid replacement, led to the evolution of a novel phenolic pathway in Brassicaceae. This pathway involves a cascade of six successive hydroxylations by two partially redundant cytochromes P450, leading to the formation of N1,N5-di(hydroxyferuloyl)-N10-sinapoylspermidine, a major pollen constituent and so-far-overlooked player in phenylpropanoid metabolism. This example shows how positive Darwinian selection can favor structured clusters of nonsynonymous substitutions that are needed for the transition of enzymes to new functions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Matsuno, Michiyo -- Compagnon, Vincent -- Schoch, Guillaume A -- Schmitt, Martine -- Debayle, Delphine -- Bassard, Jean-Etienne -- Pollet, Brigitte -- Hehn, Alain -- Heintz, Dimitri -- Ullmann, Pascaline -- Lapierre, Catherine -- Bernier, Francois -- Ehlting, Jurgen -- Werck-Reichhart, Daniele -- New York, N.Y. -- Science. 2009 Sep 25;325(5948):1688-92. doi: 10.1126/science.1174095.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Biologie Moleculaire des Plantes, CNRS-UPR2357, Universite de Strasbourg, 28 Rue Goethe, 67083 Strasbourg Cedex, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19779199" target="_blank"〉PubMed〈/a〉
    Keywords: Arabidopsis/genetics/metabolism ; Base Sequence ; Brassica napus/genetics/growth & development/metabolism ; Brassicaceae/genetics/growth & development/*metabolism ; Cytochrome P-450 Enzyme System/chemistry/genetics/*metabolism ; *Evolution, Molecular ; Gene Duplication ; Hydroxylation ; Metabolic Networks and Pathways ; Methylation ; Models, Molecular ; Molecular Sequence Data ; Plant Proteins/chemistry/genetics/metabolism ; Pollen/*growth & development/metabolism ; RNA Interference ; Retroelements ; Selection, Genetic ; Spermidine/*analogs & derivatives/metabolism
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  • 43
    Publication Date: 2009-11-07
    Description: Genome sequencing of large numbers of individuals promises to advance the understanding, treatment, and prevention of human diseases, among other applications. We describe a genome sequencing platform that achieves efficient imaging and low reagent consumption with combinatorial probe anchor ligation chemistry to independently assay each base from patterned nanoarrays of self-assembling DNA nanoballs. We sequenced three human genomes with this platform, generating an average of 45- to 87-fold coverage per genome and identifying 3.2 to 4.5 million sequence variants per genome. Validation of one genome data set demonstrates a sequence accuracy of about 1 false variant per 100 kilobases. The high accuracy, affordable cost of $4400 for sequencing consumables, and scalability of this platform enable complete human genome sequencing for the detection of rare variants in large-scale genetic studies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Drmanac, Radoje -- Sparks, Andrew B -- Callow, Matthew J -- Halpern, Aaron L -- Burns, Norman L -- Kermani, Bahram G -- Carnevali, Paolo -- Nazarenko, Igor -- Nilsen, Geoffrey B -- Yeung, George -- Dahl, Fredrik -- Fernandez, Andres -- Staker, Bryan -- Pant, Krishna P -- Baccash, Jonathan -- Borcherding, Adam P -- Brownley, Anushka -- Cedeno, Ryan -- Chen, Linsu -- Chernikoff, Dan -- Cheung, Alex -- Chirita, Razvan -- Curson, Benjamin -- Ebert, Jessica C -- Hacker, Coleen R -- Hartlage, Robert -- Hauser, Brian -- Huang, Steve -- Jiang, Yuan -- Karpinchyk, Vitali -- Koenig, Mark -- Kong, Calvin -- Landers, Tom -- Le, Catherine -- Liu, Jia -- McBride, Celeste E -- Morenzoni, Matt -- Morey, Robert E -- Mutch, Karl -- Perazich, Helena -- Perry, Kimberly -- Peters, Brock A -- Peterson, Joe -- Pethiyagoda, Charit L -- Pothuraju, Kaliprasad -- Richter, Claudia -- Rosenbaum, Abraham M -- Roy, Shaunak -- Shafto, Jay -- Sharanhovich, Uladzislau -- Shannon, Karen W -- Sheppy, Conrad G -- Sun, Michel -- Thakuria, Joseph V -- Tran, Anne -- Vu, Dylan -- Zaranek, Alexander Wait -- Wu, Xiaodi -- Drmanac, Snezana -- Oliphant, Arnold R -- Banyai, William C -- Martin, Bruce -- Ballinger, Dennis G -- Church, George M -- Reid, Clifford A -- New York, N.Y. -- Science. 2010 Jan 1;327(5961):78-81. doi: 10.1126/science.1181498. Epub 2009 Nov 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Complete Genomics, Inc., 2071 Stierlin Court, Mountain View, CA 94043, USA. rdrmanac@completegenomics.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19892942" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Computational Biology ; Costs and Cost Analysis ; DNA/*chemistry/genetics ; Databases, Nucleic Acid ; *Genome, Human ; Genomic Library ; Genotype ; Haplotypes ; Human Genome Project ; Humans ; Male ; *Microarray Analysis ; Nanostructures ; Nanotechnology ; Nucleic Acid Amplification Techniques ; Polymorphism, Single Nucleotide ; Sequence Analysis, DNA/economics/instrumentation/*methods/standards ; Software
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  • 44
    Publication Date: 2008-01-26
    Description: We have synthesized a 582,970-base pair Mycoplasma genitalium genome. This synthetic genome, named M. genitalium JCVI-1.0, contains all the genes of wild-type M. genitalium G37 except MG408, which was disrupted by an antibiotic marker to block pathogenicity and to allow for selection. To identify the genome as synthetic, we inserted "watermarks" at intergenic sites known to tolerate transposon insertions. Overlapping "cassettes" of 5 to 7 kilobases (kb), assembled from chemically synthesized oligonucleotides, were joined by in vitro recombination to produce intermediate assemblies of approximately 24 kb, 72 kb ("1/8 genome"), and 144 kb ("1/4 genome"), which were all cloned as bacterial artificial chromosomes in Escherichia coli. Most of these intermediate clones were sequenced, and clones of all four 1/4 genomes with the correct sequence were identified. The complete synthetic genome was assembled by transformation-associated recombination cloning in the yeast Saccharomyces cerevisiae, then isolated and sequenced. A clone with the correct sequence was identified. The methods described here will be generally useful for constructing large DNA molecules from chemically synthesized pieces and also from combinations of natural and synthetic DNA segments.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gibson, Daniel G -- Benders, Gwynedd A -- Andrews-Pfannkoch, Cynthia -- Denisova, Evgeniya A -- Baden-Tillson, Holly -- Zaveri, Jayshree -- Stockwell, Timothy B -- Brownley, Anushka -- Thomas, David W -- Algire, Mikkel A -- Merryman, Chuck -- Young, Lei -- Noskov, Vladimir N -- Glass, John I -- Venter, J Craig -- Hutchison, Clyde A 3rd -- Smith, Hamilton O -- New York, N.Y. -- Science. 2008 Feb 29;319(5867):1215-20. doi: 10.1126/science.1151721. Epub 2008 Jan 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉J. Craig Venter Institute, Rockville, MD 20850, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18218864" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Chromosomes, Artificial, Bacterial ; Chromosomes, Artificial, Yeast ; *Cloning, Molecular ; DNA, Bacterial/*chemical synthesis ; DNA, Recombinant ; Escherichia coli/genetics ; Genetic Vectors ; *Genome, Bacterial ; Genomics/*methods ; Mycoplasma genitalium/*genetics ; Oligodeoxyribonucleotides/chemical synthesis ; Plasmids ; Recombination, Genetic ; Saccharomyces cerevisiae/genetics ; Sequence Analysis, DNA ; Transformation, Genetic
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  • 45
    facet.materialart.
    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 2008-02-16
    Description: Cadherin-mediated cell adhesion and signaling is essential for metazoan development and yet is absent from all other multicellular organisms. We found cadherin genes at numbers similar to those observed in complex metazoans in one of the closest single-celled relatives of metazoans, the choanoflagellate Monosiga brevicollis. Because the evolution of metazoans from a single-celled ancestor required novel cell adhesion and signaling mechanisms, the discovery of diverse cadherins in choanoflagellates suggests that cadherins may have contributed to metazoan origins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abedin, Monika -- King, Nicole -- New York, N.Y. -- Science. 2008 Feb 15;319(5865):946-8. doi: 10.1126/science.1151084.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology and Center for Integrative Genomics, University of California at Berkeley, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18276888" target="_blank"〉PubMed〈/a〉
    Keywords: Actin Cytoskeleton/metabolism ; Amino Acid Sequence ; Animals ; Base Sequence ; *Biological Evolution ; Cadherins/*chemistry/*genetics/physiology ; Cell Adhesion ; Ciona intestinalis/chemistry ; Cnidaria/chemistry ; Drosophila melanogaster/chemistry ; Eukaryota/*chemistry ; Eukaryotic Cells/*chemistry/physiology ; Mice ; Molecular Sequence Data ; Protein Structure, Tertiary ; Repetitive Sequences, Amino Acid ; Signal Transduction ; Tyrosine/metabolism ; src Homology Domains
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  • 46
    Publication Date: 2008-12-20
    Description: Horizontal gene transfer (HGT) in bacteria and archaea occurs through phage transduction, transformation, or conjugation, and the latter is particularly important for the spread of antibiotic resistance. Clustered, regularly interspaced, short palindromic repeat (CRISPR) loci confer sequence-directed immunity against phages. A clinical isolate of Staphylococcus epidermidis harbors a CRISPR spacer that matches the nickase gene present in nearly all staphylococcal conjugative plasmids. Here we show that CRISPR interference prevents conjugation and plasmid transformation in S. epidermidis. Insertion of a self-splicing intron into nickase blocks interference despite the reconstitution of the target sequence in the spliced mRNA, which indicates that the interference machinery targets DNA directly. We conclude that CRISPR loci counteract multiple routes of HGT and can limit the spread of antibiotic resistance in pathogenic bacteria.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2695655/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2695655/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marraffini, Luciano A -- Sontheimer, Erik J -- GM072830/GM/NIGMS NIH HHS/ -- R01 GM072830/GM/NIGMS NIH HHS/ -- R01 GM072830-04/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2008 Dec 19;322(5909):1843-5. doi: 10.1126/science.1165771.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Molecular Biology and Cell Biology, Northwestern University, 2205 Tech Drive, Evanston, IL 60208, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19095942" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; *Conjugation, Genetic ; DNA, Bacterial/*genetics/metabolism ; Deoxyribonuclease I/genetics/metabolism ; *Gene Silencing ; *Gene Transfer, Horizontal ; Plasmids/genetics ; RNA Splicing ; RNA, Bacterial/*genetics/metabolism ; Repetitive Sequences, Nucleic Acid/*genetics ; Staphylococcus Phages/genetics ; Staphylococcus aureus/genetics ; Staphylococcus epidermidis/*genetics ; *Transformation, Bacterial
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  • 47
    Publication Date: 2008-01-19
    Description: Dietary vitamin A deficiency causes eye disease in 40 million children each year and places 140 to 250 million at risk for health disorders. Many children in sub-Saharan Africa subsist on maize-based diets. Maize displays considerable natural variation for carotenoid composition, including vitamin A precursors alpha-carotene, beta-carotene, and beta-cryptoxanthin. Through association analysis, linkage mapping, expression analysis, and mutagenesis, we show that variation at the lycopene epsilon cyclase (lcyE) locus alters flux down alpha-carotene versus beta-carotene branches of the carotenoid pathway. Four natural lcyE polymorphisms explained 58% of the variation in these two branches and a threefold difference in provitamin A compounds. Selection of favorable lcyE alleles with inexpensive molecular markers will now enable developing-country breeders to more effectively produce maize grain with higher provitamin A levels.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2933658/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2933658/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harjes, Carlos E -- Rocheford, Torbert R -- Bai, Ling -- Brutnell, Thomas P -- Kandianis, Catherine Bermudez -- Sowinski, Stephen G -- Stapleton, Ann E -- Vallabhaneni, Ratnakar -- Williams, Mark -- Wurtzel, Eleanore T -- Yan, Jianbing -- Buckler, Edward S -- S06-GM08225/GM/NIGMS NIH HHS/ -- SC1 GM081160/GM/NIGMS NIH HHS/ -- SC1 GM081160-01/GM/NIGMS NIH HHS/ -- SC1 GM081160-02/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2008 Jan 18;319(5861):330-3. doi: 10.1126/science.1150255.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Genomic Diversity, Cornell University, Ithaca, NY 14853, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18202289" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Breeding ; Carotenoids/*analysis/metabolism ; Crosses, Genetic ; Cryptoxanthins ; Gene Expression Regulation, Plant ; *Genetic Variation ; Haplotypes ; Intramolecular Lyases/*genetics/metabolism ; Molecular Sequence Data ; Mutagenesis ; Nutritive Value ; Polymorphism, Genetic ; Quantitative Trait Loci ; Xanthophylls/analysis/metabolism ; Zea mays/chemistry/enzymology/*genetics ; beta Carotene/analysis/metabolism
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  • 48
    Publication Date: 2008-05-24
    Description: Viruses shape microbial community structure and function by altering the fitness of their hosts and by promoting genetic exchange. The complexity of most natural ecosystems has precluded detailed studies of virus-host interactions. We reconstructed virus and host bacterial and archaeal genome sequences from community genomic data from two natural acidophilic biofilms. Viruses were matched to their hosts by analyzing spacer sequences that occur among clustered regularly interspaced short palindromic repeats (CRISPRs) that are a hallmark of virus resistance. Virus population genomic analyses provided evidence that extensive recombination shuffles sequence motifs sufficiently to evade CRISPR spacers. Only the most recently acquired spacers match coexisting viruses, which suggests that community stability is achieved by rapid but compensatory shifts in host resistance levels and virus population structure.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Andersson, Anders F -- Banfield, Jillian F -- New York, N.Y. -- Science. 2008 May 23;320(5879):1047-50. doi: 10.1126/science.1157358.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Earth and Planetary Science and Environmental Science, Policy, and Management, University of California, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18497291" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Archaea/*genetics/physiology/*virology ; Archaeal Viruses/genetics/*physiology ; Bacteria/*genetics/*virology ; Bacterial Physiological Phenomena ; Bacteriophages/genetics/*physiology ; Base Sequence ; Biofilms ; DNA, Intergenic ; Ecosystem ; Genome, Archaeal ; Genome, Bacterial ; Genome, Viral ; Hydrogen-Ion Concentration ; Molecular Sequence Data ; Oligodeoxyribonucleotides ; Recombination, Genetic ; *Repetitive Sequences, Nucleic Acid ; Thermoplasmales/genetics/physiology/virology ; Viral Proteins/chemistry/genetics/physiology
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  • 49
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 2008-01-26
    Description: The statistical methods applied to the analysis of genomic data do not account for uncertainty in the sequence alignment. Indeed, the alignment is treated as an observation, and all of the subsequent inferences depend on the alignment being correct. This may not have been too problematic for many phylogenetic studies, in which the gene is carefully chosen for, among other things, ease of alignment. However, in a comparative genomics study, the same statistical methods are applied repeatedly on thousands of genes, many of which will be difficult to align. Using genomic data from seven yeast species, we show that uncertainty in the alignment can lead to several problems, including different alignment methods resulting in different conclusions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wong, Karen M -- Suchard, Marc A -- Huelsenbeck, John P -- GM-069801/GM/NIGMS NIH HHS/ -- R01 GM069801/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2008 Jan 25;319(5862):473-6. doi: 10.1126/science.1151532.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Ecology, Behavior and Evolution, University of California, San Diego, La Jolla, CA 92093, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18218900" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Amino Acid Sequence ; Base Sequence ; Computational Biology ; Evolution, Molecular ; *Genome, Fungal ; *Genomics ; Models, Statistical ; Monte Carlo Method ; Open Reading Frames ; Phylogeny ; Saccharomyces/*genetics ; Selection, Genetic ; Sequence Alignment/*methods ; Software ; Uncertainty
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  • 50
    Publication Date: 2008-09-06
    Description: Changes in gene regulation are thought to have contributed to the evolution of human development. However, in vivo evidence for uniquely human developmental regulatory function has remained elusive. In transgenic mice, a conserved noncoding sequence (HACNS1) that evolved extremely rapidly in humans acted as an enhancer of gene expression that has gained a strong limb expression domain relative to the orthologous elements from chimpanzee and rhesus macaque. This gain of function was consistent across two developmental stages in the mouse and included the presumptive anterior wrist and proximal thumb. In vivo analyses with synthetic enhancers, in which human-specific substitutions were introduced into the chimpanzee enhancer sequence or reverted in the human enhancer to the ancestral state, indicated that 13 substitutions clustered in an 81-base pair module otherwise highly constrained among terrestrial vertebrates were sufficient to confer the human-specific limb expression domain.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2658639/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2658639/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Prabhakar, Shyam -- Visel, Axel -- Akiyama, Jennifer A -- Shoukry, Malak -- Lewis, Keith D -- Holt, Amy -- Plajzer-Frick, Ingrid -- Morrison, Harris -- Fitzpatrick, David R -- Afzal, Veena -- Pennacchio, Len A -- Rubin, Edward M -- Noonan, James P -- 1-F32-GM074367/GM/NIGMS NIH HHS/ -- F32 GM074367/GM/NIGMS NIH HHS/ -- F32 GM074367-02/GM/NIGMS NIH HHS/ -- HG003988/HG/NHGRI NIH HHS/ -- HL066681/HL/NHLBI NIH HHS/ -- MC_U127561093/Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2008 Sep 5;321(5894):1346-50. doi: 10.1126/science.1159974.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Genomics Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18772437" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Binding Sites ; Body Patterning/*genetics ; Conserved Sequence ; Embryonic Development ; *Enhancer Elements, Genetic ; Evolution, Molecular ; Extremities/*embryology ; Gene Expression Profiling ; *Gene Expression Regulation, Developmental ; Humans ; Limb Buds/embryology/metabolism ; Macaca mulatta/genetics ; Mice ; Mice, Transgenic ; Molecular Sequence Data ; Mutation ; PAX9 Transcription Factor/metabolism ; Pan troglodytes/genetics ; Selection, Genetic ; Transcription Factors/metabolism
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  • 51
    Publication Date: 2008-12-06
    Description: Female meiotic drive, in which paired chromosomes compete for access to the egg, is a potentially powerful but rarely documented evolutionary force. In interspecific monkeyflower (Mimulus) hybrids, a driving M. guttatus allele (D) exhibits a 98:2 transmission advantage via female meiosis. We show that extreme interspecific drive is most likely caused by divergence in centromere-associated repeat domains and document cytogenetic and functional polymorphism for drive within a population of M. guttatus. In conspecific crosses, D had a 58:42 transmission advantage over nondriving alternative alleles. However, individuals homozygous for the driving allele suffered reduced pollen viability. These fitness effects and molecular population genetic data suggest that balancing selection prevents the fixation or loss of D and that selfish chromosomal transmission may affect both individual fitness and population genetic load.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fishman, Lila -- Saunders, Arpiar -- New York, N.Y. -- Science. 2008 Dec 5;322(5907):1559-62. doi: 10.1126/science.1161406.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA. lila.fishman@mso.umt.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19056989" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Base Sequence ; Biological Evolution ; Centromere/*physiology ; Chromosome Segregation ; Chromosomes, Plant/*physiology ; Crosses, Genetic ; Genetic Markers ; Heterozygote ; Hybridization, Genetic ; Linkage Disequilibrium ; *Meiosis ; Mimulus/*genetics/physiology ; Molecular Sequence Data ; Polymorphism, Genetic ; Repetitive Sequences, Nucleic Acid ; Selection, Genetic
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  • 52
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 2008-10-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Strasser, Bruno J -- New York, N.Y. -- Science. 2008 Oct 24;322(5901):537-8. doi: 10.1126/science.1163399.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of the History of Medicine, Yale University, New Haven, CT 06520, USA. bruno.strasser@yale.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18948528" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Databases, Nucleic Acid/*history/organization & administration ; Editorial Policies ; History, 20th Century ; History, 21st Century ; National Institutes of Health (U.S.)/*history ; National Library of Medicine (U.S.)/history ; Natural History/history ; Publishing ; United States
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  • 53
    Publication Date: 2008-07-19
    Description: Cyclic di-guanosine monophosphate (di-GMP) is a circular RNA dinucleotide that functions as a second messenger in diverse species of bacteria to trigger wide-ranging physiological changes, including cell differentiation, conversion between motile and biofilm lifestyles, and virulence gene expression. However, the mechanisms by which cyclic di-GMP regulates gene expression have remained a mystery. We found that cyclic di-GMP in many bacterial species is sensed by a riboswitch class in messenger RNA that controls the expression of genes involved in numerous fundamental cellular processes. A variety of cyclic di-GMP regulons are revealed, including some riboswitches associated with virulence gene expression, pilus formation, and flagellum biosynthesis. In addition, sequences matching the consensus for cyclic di-GMP riboswitches are present in the genome of a bacteriophage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sudarsan, N -- Lee, E R -- Weinberg, Z -- Moy, R H -- Kim, J N -- Link, K H -- Breaker, R R -- GM 068819/GM/NIGMS NIH HHS/ -- HV28186/HV/NHLBI NIH HHS/ -- R33 DK07027/DK/NIDDK NIH HHS/ -- RR19895-02/RR/NCRR NIH HHS/ -- T32GM007223/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2008 Jul 18;321(5887):411-3. doi: 10.1126/science.1159519.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Yale University, New Haven, CT 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18635805" target="_blank"〉PubMed〈/a〉
    Keywords: Aptamers, Nucleotide/*metabolism ; Bacillus cereus/genetics/metabolism ; Bacteria/*genetics/metabolism ; Bacteriophages/genetics ; Base Sequence ; Clostridium difficile/genetics/metabolism ; Cyclic GMP/*analogs & derivatives/metabolism ; *Gene Expression Regulation, Bacterial ; Genes, Bacterial ; Ligands ; Molecular Sequence Data ; Nucleic Acid Conformation ; RNA, Bacterial/chemistry/*metabolism ; RNA, Messenger/chemistry/*metabolism ; Regulon ; *Second Messenger Systems ; Vibrio cholerae/genetics/metabolism
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  • 54
    Publication Date: 2008-11-22
    Description: We present single-molecule, real-time sequencing data obtained from a DNA polymerase performing uninterrupted template-directed synthesis using four distinguishable fluorescently labeled deoxyribonucleoside triphosphates (dNTPs). We detected the temporal order of their enzymatic incorporation into a growing DNA strand with zero-mode waveguide nanostructure arrays, which provide optical observation volume confinement and enable parallel, simultaneous detection of thousands of single-molecule sequencing reactions. Conjugation of fluorophores to the terminal phosphate moiety of the dNTPs allows continuous observation of DNA synthesis over thousands of bases without steric hindrance. The data report directly on polymerase dynamics, revealing distinct polymerization states and pause sites corresponding to DNA secondary structure. Sequence data were aligned with the known reference sequence to assay biophysical parameters of polymerization for each template position. Consensus sequences were generated from the single-molecule reads at 15-fold coverage, showing a median accuracy of 99.3%, with no systematic error beyond fluorophore-dependent error rates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eid, John -- Fehr, Adrian -- Gray, Jeremy -- Luong, Khai -- Lyle, John -- Otto, Geoff -- Peluso, Paul -- Rank, David -- Baybayan, Primo -- Bettman, Brad -- Bibillo, Arkadiusz -- Bjornson, Keith -- Chaudhuri, Bidhan -- Christians, Frederick -- Cicero, Ronald -- Clark, Sonya -- Dalal, Ravindra -- Dewinter, Alex -- Dixon, John -- Foquet, Mathieu -- Gaertner, Alfred -- Hardenbol, Paul -- Heiner, Cheryl -- Hester, Kevin -- Holden, David -- Kearns, Gregory -- Kong, Xiangxu -- Kuse, Ronald -- Lacroix, Yves -- Lin, Steven -- Lundquist, Paul -- Ma, Congcong -- Marks, Patrick -- Maxham, Mark -- Murphy, Devon -- Park, Insil -- Pham, Thang -- Phillips, Michael -- Roy, Joy -- Sebra, Robert -- Shen, Gene -- Sorenson, Jon -- Tomaney, Austin -- Travers, Kevin -- Trulson, Mark -- Vieceli, John -- Wegener, Jeffrey -- Wu, Dawn -- Yang, Alicia -- Zaccarin, Denis -- Zhao, Peter -- Zhong, Frank -- Korlach, Jonas -- Turner, Stephen -- R01HG003710/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2009 Jan 2;323(5910):133-8. doi: 10.1126/science.1162986. Epub 2008 Nov 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Pacific Biosciences, 1505 Adams Drive, Menlo Park, CA 94025, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19023044" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Consensus Sequence ; DNA/biosynthesis ; DNA, Circular/chemistry ; DNA, Single-Stranded/chemistry ; DNA-Directed DNA Polymerase/*metabolism ; Deoxyribonucleotides/metabolism ; Enzymes, Immobilized ; Fluorescent Dyes ; Kinetics ; Nanostructures ; Sequence Analysis, DNA/*methods ; Spectrometry, Fluorescence
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  • 55
    Publication Date: 2008-12-17
    Description: Might DNA sequence variation reflect germline genetic activity and underlying chromatin structure? We investigated this question using medaka (Japanese killifish, Oryzias latipes), by comparing the genomic sequences of two strains (Hd-rR and HNI) and by mapping approximately 37.3 million nucleosome cores from Hd-rR blastulae and 11,654 representative transcription start sites from six embryonic stages. We observed a distinctive approximately 200-base pair (bp) periodic pattern of genetic variation downstream of transcription start sites; the rate of insertions and deletions longer than 1 bp peaked at positions of approximately +200, +400, and +600 bp, whereas the point mutation rate showed corresponding valleys. This approximately 200-bp periodicity was correlated with the chromatin structure, with nucleosome occupancy minimized at positions 0, +200, +400, and +600 bp. These data exemplify the potential for genetic activity (transcription) and chromatin structure to contribute to molding the DNA sequence on an evolutionary time scale.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2757552/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2757552/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sasaki, Shin -- Mello, Cecilia C -- Shimada, Atsuko -- Nakatani, Yoichiro -- Hashimoto, Shin-Ichi -- Ogawa, Masako -- Matsushima, Kouji -- Gu, Sam Guoping -- Kasahara, Masahiro -- Ahsan, Budrul -- Sasaki, Atsushi -- Saito, Taro -- Suzuki, Yutaka -- Sugano, Sumio -- Kohara, Yuji -- Takeda, Hiroyuki -- Fire, Andrew -- Morishita, Shinichi -- R01 GM037706/GM/NIGMS NIH HHS/ -- R01 GM037706-24/GM/NIGMS NIH HHS/ -- R01 GM37706/GM/NIGMS NIH HHS/ -- T32 CA009151/CA/NCI NIH HHS/ -- T32 CA09151/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2009 Jan 16;323(5912):401-4. doi: 10.1126/science.1163183. Epub 2008 Dec 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Computational Biology, Graduate School of Frontier Sciences, University of Tokyo, Kashiwa, 277-0882, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19074313" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Composition ; Base Sequence ; Chromatin/*physiology/ultrastructure ; DNA/chemistry/*genetics ; DNA Repair ; *Genetic Variation ; Genome ; INDEL Mutation ; Mutagenesis ; Mutation ; Nucleosomes/*physiology/ultrastructure ; Oryzias/embryology/*genetics ; Point Mutation ; Promoter Regions, Genetic ; *Transcription Initiation Site ; Transcription, Genetic
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  • 56
    Publication Date: 2008-04-05
    Description: The timing of the first human migration into the Americas and its relation to the appearance of the Clovis technological complex in North America at about 11,000 to 10,800 radiocarbon years before the present (14C years B.P.) remains contentious. We establish that humans were present at Paisley 5 Mile Point Caves, in south-central Oregon, by 12,300 14C years B.P., through the recovery of human mitochondrial DNA (mtDNA) from coprolites, directly dated by accelerator mass spectrometry. The mtDNA corresponds to Native American founding haplogroups A2 and B2. The dates of the coprolites are 〉1000 14C years earlier than currently accepted dates for the Clovis complex.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gilbert, M Thomas P -- Jenkins, Dennis L -- Gotherstrom, Anders -- Naveran, Nuria -- Sanchez, Juan J -- Hofreiter, Michael -- Thomsen, Philip Francis -- Binladen, Jonas -- Higham, Thomas F G -- Yohe, Robert M 2nd -- Parr, Robert -- Cummings, Linda Scott -- Willerslev, Eske -- New York, N.Y. -- Science. 2008 May 9;320(5877):786-9. doi: 10.1126/science.1154116. Epub 2008 Apr 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Ancient Genetics, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen, Denmark.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18388261" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Canidae/genetics ; *DNA, Mitochondrial ; *Emigration and Immigration ; *Feces ; *Fossils ; Humans ; Molecular Sequence Data ; North America ; Oregon ; Polymerase Chain Reaction ; Polymorphism, Single Nucleotide ; Sciuridae/genetics ; Sigmodontinae/genetics ; Time
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  • 57
    Publication Date: 2008-10-11
    Description: The high photostability of DNA is commonly attributed to efficient radiationless electronic relaxation processes. We used femtosecond time-resolved fluorescence spectroscopy to reveal that the ensuing dynamics are strongly dependent on base sequence and are also affected by higher-order structure. Excited electronic state lifetimes in dG-doped d(A)20 single-stranded DNA and dG.dC-doped d(A)20.d(T)20 double-stranded DNA decrease sharply with the substitution of only a few bases. In duplexes containing d(AGA).d(TCT) or d(AG).d(TC) repeats, deactivation of the fluorescing states occurs on the subpicosecond time scale, but the excited-state lifetimes increase again in extended d(G) runs. The results point at more complex and molecule-specific photodynamics in native DNA than may be evident in simpler model systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schwalb, Nina K -- Temps, Friedrich -- New York, N.Y. -- Science. 2008 Oct 10;322(5899):243-5. doi: 10.1126/science.1161651.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut fur Physikalische Chemie, Christian-Albrechts-Universitat zu Kiel, Olshausenstrasse 40, D-24098 Kiel, Germany. schwalb@phc.uni-kiel.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18845751" target="_blank"〉PubMed〈/a〉
    Keywords: Base Pairing ; Base Sequence ; Circular Dichroism ; DNA/*chemistry ; DNA, Single-Stranded/chemistry ; Hydrogen Bonding ; Nucleic Acid Conformation ; Oligodeoxyribonucleotides/*chemistry ; Photochemistry ; Purines/chemistry ; Pyrimidines/chemistry ; Spectrometry, Fluorescence
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  • 58
    Publication Date: 2008-08-16
    Description: Prokaryotes acquire virus resistance by integrating short fragments of viral nucleic acid into clusters of regularly interspaced short palindromic repeats (CRISPRs). Here we show how virus-derived sequences contained in CRISPRs are used by CRISPR-associated (Cas) proteins from the host to mediate an antiviral response that counteracts infection. After transcription of the CRISPR, a complex of Cas proteins termed Cascade cleaves a CRISPR RNA precursor in each repeat and retains the cleavage products containing the virus-derived sequence. Assisted by the helicase Cas3, these mature CRISPR RNAs then serve as small guide RNAs that enable Cascade to interfere with virus proliferation. Our results demonstrate that the formation of mature guide RNAs by the CRISPR RNA endonuclease subunit of Cascade is a mechanistic requirement for antiviral defense.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brouns, Stan J J -- Jore, Matthijs M -- Lundgren, Magnus -- Westra, Edze R -- Slijkhuis, Rik J H -- Snijders, Ambrosius P L -- Dickman, Mark J -- Makarova, Kira S -- Koonin, Eugene V -- van der Oost, John -- New York, N.Y. -- Science. 2008 Aug 15;321(5891):960-4. doi: 10.1126/science.1159689.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Microbiology, Department of Agrotechnology and Food Sciences, Wageningen University, Dreijenplein 10, 6703 HB Wageningen, Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18703739" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Bacteriophage lambda/*genetics/*growth & development ; Base Sequence ; DNA, Intergenic ; DNA, Viral/metabolism ; Escherichia coli/genetics/metabolism ; Escherichia coli K12/*genetics/metabolism/*virology ; Escherichia coli Proteins/chemistry/genetics/*metabolism ; Genes, Bacterial ; Molecular Sequence Data ; RNA Precursors/metabolism ; RNA, Bacterial/*genetics/metabolism ; RNA, Guide/genetics/metabolism ; *Repetitive Sequences, Nucleic Acid ; Transcription, Genetic ; Viral Plaque Assay
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  • 59
    Publication Date: 2008-08-30
    Description: Plants use many means to attract pollinators, including visual cues and odor. We investigated how nonpigment floral chemistry influences nectar removal, floral visitation, florivory, rates of outcrossing, and fitness through both male and female functions. We blocked expression of biosynthetic genes of the dominant floral attractant [benzyl acetone (Nachal1)] and nectar repellent [nicotine (Napmt1/2)] in all combinations in the native tobacco Nicotiana attenuata and measured their effects on plants in their native habitat. Both repellent and attractant were required to maximize capsule production and seed siring in emasculated flowers and flower visitation by native pollinators, whereas nicotine reduced florivory and nectar robbing.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kessler, Danny -- Gase, Klaus -- Baldwin, Ian T -- New York, N.Y. -- Science. 2008 Aug 29;321(5893):1200-2. doi: 10.1126/science.1160072.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Ecology, Max-Planck-Institute for Chemical Ecology, Hans-Knoll-Strasse 8, DE-07745 Jena, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18755975" target="_blank"〉PubMed〈/a〉
    Keywords: Acetone/*analogs & derivatives/metabolism ; Acyltransferases/genetics ; Animals ; Base Sequence ; Birds/*physiology ; Cloning, Molecular ; Flowers/chemistry/*physiology ; Methyltransferases/genetics ; Molecular Sequence Data ; Nicotine/*metabolism ; *Odors ; Plants, Genetically Modified ; Pollen/physiology ; RNA Interference ; Reproduction ; Seeds ; Tobacco/genetics/*physiology ; Transformation, Genetic
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  • 60
    Publication Date: 2008-03-22
    Description: Hermaphroditic organisms avoid inbreeding by a system of self-incompatibility (SI). A primitive chordate (ascidian) Ciona intestinalis is an example of such an organism, but the molecular mechanism underlying its SI system is not known. Here, we show that the SI system is governed by two gene loci that act cooperatively. Each locus contains a tightly linked pair of polycystin 1-related receptor (s-Themis) and fibrinogen-like ligand (v-Themis) genes, the latter of which is located in the first intron of s-Themis but transcribed in the opposite direction. These genes may encode male- and female-side self-recognition molecules. The SI system of C. intestinalis has a similar framework to that of flowering plants but utilizing different molecules.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harada, Yoshito -- Takagaki, Yuhei -- Sunagawa, Masahiko -- Saito, Takako -- Yamada, Lixy -- Taniguchi, Hisaaki -- Shoguchi, Eiichi -- Sawada, Hitoshi -- New York, N.Y. -- Science. 2008 Apr 25;320(5875):548-50. doi: 10.1126/science.1152488. Epub 2008 Mar 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Sugashima Marine Biological Laboratory, Graduate School of Science, Nagoya University, Sugashima, Toba 517-0004, Japan. yharada@bio.nagoya-u.ac.jp〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18356489" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Ciona intestinalis/*genetics/*physiology ; Disorders of Sex Development ; Female ; Fertility ; Fertilization ; *Genes ; Male ; Molecular Sequence Data ; Ovum/metabolism/physiology ; Spermatozoa/physiology ; *TRPP Cation Channels/chemistry
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  • 61
    Publication Date: 2008-09-13
    Description: Homologous sets of transcription factors direct conserved tissue-specific gene expression, yet transcription factor-binding events diverge rapidly between closely related species. We used hepatocytes from an aneuploid mouse strain carrying human chromosome 21 to determine, on a chromosomal scale, whether interspecies differences in transcriptional regulation are primarily directed by human genetic sequence or mouse nuclear environment. Virtually all transcription factor-binding locations, landmarks of transcription initiation, and the resulting gene expression observed in human hepatocytes were recapitulated across the entire human chromosome 21 in the mouse hepatocyte nucleus. Thus, in homologous tissues, genetic sequence is largely responsible for directing transcriptional programs; interspecies differences in epigenetic machinery, cellular environment, and transcription factors themselves play secondary roles.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3717767/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3717767/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilson, Michael D -- Barbosa-Morais, Nuno L -- Schmidt, Dominic -- Conboy, Caitlin M -- Vanes, Lesley -- Tybulewicz, Victor L J -- Fisher, Elizabeth M C -- Tavare, Simon -- Odom, Duncan T -- 080174/Wellcome Trust/United Kingdom -- 15603/Cancer Research UK/United Kingdom -- 202218/European Research Council/International -- A15603/Cancer Research UK/United Kingdom -- G0601056/Medical Research Council/United Kingdom -- MC_U117527252/Medical Research Council/United Kingdom -- Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2008 Oct 17;322(5900):434-8. doi: 10.1126/science.1160930. Epub 2008 Sep 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Research UK, Cambridge Research Institute, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18787134" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Nucleus/metabolism ; Chromatin Assembly and Disassembly ; Chromatin Immunoprecipitation ; Chromosomes, Human, Pair 21/*genetics/metabolism ; Disease Models, Animal ; Down Syndrome/genetics ; *Gene Expression Regulation ; Hepatocyte Nuclear Factors/*metabolism ; Hepatocytes/*metabolism ; Histones/metabolism ; Humans ; Methylation ; Mice ; Oligonucleotide Array Sequence Analysis ; *Regulatory Sequences, Nucleic Acid ; Species Specificity ; Transcription Initiation Site ; *Transcription, Genetic
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  • 62
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2008-03-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Endy, Drew -- New York, N.Y. -- Science. 2008 Feb 29;319(5867):1196-7. doi: 10.1126/science.1155749.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biological Engineering Department, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. endy@mit.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18309068" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; *Cloning, Molecular ; Conserved Sequence ; DNA, Bacterial/*chemical synthesis ; *Genome, Bacterial ; Genomics/*methods ; Mycoplasma genitalium/*genetics ; Oligodeoxyribonucleotides/chemical synthesis ; Sequence Analysis, DNA
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  • 63
    Publication Date: 2008-04-26
    Description: We have assembled a proteome map for Arabidopsis thaliana from high-density, organ-specific proteome catalogs that we generated for different organs, developmental stages, and undifferentiated cultured cells. We matched 86,456 unique peptides to 13,029 proteins and provide expression evidence for 57 gene models that are not represented in the TAIR7 protein database. Analysis of the proteome identified organ-specific biomarkers and allowed us to compile an organ-specific set of proteotypic peptides for 4105 proteins to facilitate targeted quantitative proteomics surveys. Quantitative information for the identified proteins was used to establish correlations between transcript and protein accumulation in different plant organs. The Arabidopsis proteome map provides information about genome activity and proteome assembly and is available as a resource for plant systems biology.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baerenfaller, Katja -- Grossmann, Jonas -- Grobei, Monica A -- Hull, Roger -- Hirsch-Hoffmann, Matthias -- Yalovsky, Shaul -- Zimmermann, Philip -- Grossniklaus, Ueli -- Gruissem, Wilhelm -- Baginsky, Sacha -- New York, N.Y. -- Science. 2008 May 16;320(5878):938-41. doi: 10.1126/science.1157956. Epub 2008 Apr 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Plant Sciences, ETH (Swiss Federal Institute of Technology) Zurich, Universitatstrasse 2, 8092 Zurich, Switzerland. kbaerenfaller@ethz.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18436743" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Amino Acid Sequence ; Arabidopsis/*chemistry/cytology/*genetics/physiology ; Arabidopsis Proteins/*analysis/chemistry/genetics ; Base Sequence ; Biomarkers/analysis ; Cells, Cultured ; Computational Biology ; Databases, Genetic ; Flowers/chemistry/genetics ; Gene Expression Profiling ; Gene Expression Regulation, Plant ; *Genome, Plant ; Models, Genetic ; Molecular Sequence Data ; Peptides/analysis/chemistry ; Plant Roots/chemistry/genetics ; Proteome/*analysis ; *Proteomics ; Seeds/chemistry/genetics ; Transcription, Genetic
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  • 64
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 2008-01-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rokas, Antonis -- New York, N.Y. -- Science. 2008 Jan 25;319(5862):416-7. doi: 10.1126/science.1153156.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, Vanderbilt University, VU Station B 35-1634, Nashville, TN 37235, USA. antonis.rokas@vanderbilt.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18218881" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Amino Acid Sequence ; Base Sequence ; Bias (Epidemiology) ; Computational Biology ; Evolution, Molecular ; *Genome, Fungal ; *Genomics ; Phylogeny ; Saccharomyces/*genetics ; Sequence Alignment/*methods/standards ; Software ; Uncertainty
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  • 65
    Publication Date: 2008-04-12
    Description: Small interfering RNAs (siRNAs) direct RNA interference (RNAi) in eukaryotes. In flies, somatic cells produce siRNAs from exogenous double-stranded RNA (dsRNA) as a defense against viral infection. We identified endogenous siRNAs (endo-siRNAs), 21 nucleotides in length, that correspond to transposons and heterochromatic sequences in the somatic cells of Drosophila melanogaster. We also detected endo-siRNAs complementary to messenger RNAs (mRNAs); these siRNAs disproportionately mapped to the complementary regions of overlapping mRNAs predicted to form double-stranded RNA in vivo. Normal accumulation of somatic endo-siRNAs requires the siRNA-generating ribonuclease Dicer-2 and the RNAi effector protein Argonaute2 (Ago2). We propose that endo-siRNAs generated by the fly RNAi pathway silence selfish genetic elements in the soma, much as Piwi-interacting RNAs do in the germ line.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2953241/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2953241/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ghildiyal, Megha -- Seitz, Herve -- Horwich, Michael D -- Li, Chengjian -- Du, Tingting -- Lee, Soohyun -- Xu, Jia -- Kittler, Ellen L W -- Zapp, Maria L -- Weng, Zhiping -- Zamore, Phillip D -- F30 AG030283-02/AG/NIA NIH HHS/ -- F30 AG030283-03/AG/NIA NIH HHS/ -- F30 AG030283-04/AG/NIA NIH HHS/ -- F30AG030283/AG/NIA NIH HHS/ -- GM080625/GM/NIGMS NIH HHS/ -- GM62862/GM/NIGMS NIH HHS/ -- GM65236/GM/NIGMS NIH HHS/ -- HG003367/HG/NHGRI NIH HHS/ -- P30 AI042845/AI/NIAID NIH HHS/ -- P30 AI042845-119008/AI/NIAID NIH HHS/ -- R01 AI043208/AI/NIAID NIH HHS/ -- R01 AI043208-08/AI/NIAID NIH HHS/ -- R01 GM062862/GM/NIGMS NIH HHS/ -- R01 GM062862-08/GM/NIGMS NIH HHS/ -- R01 GM062862-09/GM/NIGMS NIH HHS/ -- R01 GM065236/GM/NIGMS NIH HHS/ -- R01 GM065236-07/GM/NIGMS NIH HHS/ -- R01 GM065236-08/GM/NIGMS NIH HHS/ -- R01 GM080625/GM/NIGMS NIH HHS/ -- R01 GM080625-02/GM/NIGMS NIH HHS/ -- R01 GM080625-03/GM/NIGMS NIH HHS/ -- R01 HG003367/HG/NHGRI NIH HHS/ -- R01 HG003367-03/HG/NHGRI NIH HHS/ -- R37 GM062862/GM/NIGMS NIH HHS/ -- R37 GM062862-11/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2008 May 23;320(5879):1077-81. doi: 10.1126/science.1157396. Epub 2008 Apr 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18403677" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Argonaute Proteins ; Base Sequence ; Cell Line ; *DNA Transposable Elements ; Drosophila Proteins/genetics/metabolism ; Drosophila melanogaster/*genetics/metabolism ; Mutation ; RNA Helicases/genetics/metabolism ; *RNA Interference ; RNA, Double-Stranded/metabolism ; RNA, Messenger/*genetics ; RNA, Small Interfering/*genetics/*metabolism ; RNA-Induced Silencing Complex/genetics/metabolism ; Retroelements ; Ribonuclease III
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  • 66
    Publication Date: 2007-10-27
    Description: We report the cloning of Style2.1, the major quantitative trait locus responsible for a key floral attribute (style length) associated with the evolution of self-pollination in cultivated tomatoes. The gene encodes a putative transcription factor that regulates cell elongation in developing styles. The transition from cross-pollination to self-pollination was accompanied, not by a change in the STYLE2.1 protein, but rather by a mutation in the Style2.1 promoter that results in a down-regulation of Style2.1 expression during flower development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Kai-Yi -- Cong, Bin -- Wing, Rod -- Vrebalov, Julia -- Tanksley, Steven D -- New York, N.Y. -- Science. 2007 Oct 26;318(5850):643-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Plant Breeding and Genetics, Cornell University, Ithaca, NY 14853, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17962563" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Biological Evolution ; Chromosome Mapping ; Cloning, Molecular ; Crosses, Genetic ; Down-Regulation ; Flowers/*anatomy & histology/genetics/growth & development ; Genes, Plant ; Genotype ; Helix-Loop-Helix Motifs ; Lycopersicon esculentum/anatomy & histology/*genetics/*physiology ; Molecular Sequence Data ; Plant Proteins/chemistry/*genetics/metabolism ; Pollen/physiology ; Promoter Regions, Genetic ; Quantitative Trait Loci ; Reproduction ; Sequence Deletion ; Transcription Factors/chemistry/*genetics/metabolism ; Transformation, Genetic
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  • 67
    Publication Date: 2007-04-14
    Description: A systematic fluorescence in situ hybridization comparison of macaque and human synteny organization disclosed five additional macaque evolutionary new centromeres (ENCs) for a total of nine ENCs. To understand the dynamics of ENC formation and progression, we compared the ENC of macaque chromosome 4 with the human orthologous region, at 6q24.3, that conserves the ancestral genomic organization. A 250-kilobase segment was extensively duplicated around the macaque centromere. These duplications were strictly intrachromosomal. Our results suggest that novel centromeres may trigger only local duplication activity and that the absence of genes in the seeding region may have been important in ENC maintenance and progression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ventura, Mario -- Antonacci, Francesca -- Cardone, Maria Francesca -- Stanyon, Roscoe -- D'Addabbo, Pietro -- Cellamare, Angelo -- Sprague, L James -- Eichler, Evan E -- Archidiacono, Nicoletta -- Rocchi, Mariano -- GM58815/GM/NIGMS NIH HHS/ -- HG002385/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2007 Apr 13;316(5822):243-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics and Microbiology, University of Bari, 70126 Bari, Italy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17431171" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; *Centromere ; Chromosomes, Human, Pair 6 ; Dna ; *Evolution, Molecular ; Gene Duplication ; Humans ; Macaca mulatta/*genetics ; Molecular Sequence Data ; Sequence Tagged Sites ; Synteny
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  • 68
    Publication Date: 2007-10-20
    Description: A computational analysis of the nuclear genome of a red alga, Cyanidioschyzon merolae, identified 11 transfer RNA (tRNA) genes in which the 3' half of the tRNA lies upstream of the 5' half in the genome. We verified that these genes are expressed and produce mature tRNAs that are aminoacylated. Analysis of tRNA-processing intermediates for these genes indicates an unusual processing pathway in which the termini of the tRNA precursor are ligated, resulting in formation of a characteristic circular RNA intermediate that is then processed at the acceptor stem to generate the correct termini.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Soma, Akiko -- Onodera, Akinori -- Sugahara, Junichi -- Kanai, Akio -- Yachie, Nozomu -- Tomita, Masaru -- Kawamura, Fujio -- Sekine, Yasuhiko -- New York, N.Y. -- Science. 2007 Oct 19;318(5849):450-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Life Science, College of Science, Rikkyo (St. Paul's) University, Toshima, Tokyo 171-8501, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17947580" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA, Algal/chemistry/genetics ; *Genes ; Methionine-tRNA Ligase/metabolism ; Molecular Sequence Data ; Nucleic Acid Conformation ; RNA/chemistry/genetics/*metabolism ; RNA Processing, Post-Transcriptional ; RNA, Algal/*genetics/metabolism ; RNA, Transfer/*genetics/metabolism ; RNA, Transfer, Amino Acyl/metabolism ; Rhodophyta/*genetics/metabolism ; Transcription, Genetic
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  • 69
    Publication Date: 2007-07-14
    Description: The temporal and spatial regulation of gene expression in mammalian development is linked to the establishment of functional chromatin domains. Here, we report that tissue-specific transcription of a retrotransposon repeat in the murine growth hormone locus is required for gene activation. This repeat serves as a boundary to block the influence of repressive chromatin modifications. The repeat element is able to generate short, overlapping Pol II-and Pol III-driven transcripts, both of which are necessary and sufficient to enable a restructuring of the regulated locus into nuclear compartments. These data suggest that transcription of interspersed repetitive sequences may represent a developmental strategy for the establishment of functionally distinct domains within the mammalian genome to control gene activation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lunyak, Victoria V -- Prefontaine, Gratien G -- Nunez, Esperanza -- Cramer, Thorsten -- Ju, Bong-Gun -- Ohgi, Kenneth A -- Hutt, Kasey -- Roy, Rosa -- Garcia-Diaz, Angel -- Zhu, Xiaoyan -- Yung, Yun -- Montoliu, Lluis -- Glass, Christopher K -- Rosenfeld, Michael G -- New York, N.Y. -- Science. 2007 Jul 13;317(5835):248-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, School of Medicine, University of California, San Diego, 9500 Gilman Drive, Room 345, La Jolla, CA 92093-0648, USA. vlunyak@uscd.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17626886" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Chromatin Immunoprecipitation ; DNA Polymerase II/metabolism ; DNA Polymerase III/metabolism ; *Gene Expression Regulation, Developmental ; Growth Hormone/*genetics ; Histones/metabolism ; *Insulator Elements ; Methylation ; Mice ; Mice, Transgenic ; Molecular Sequence Data ; *Organogenesis ; Pituitary Gland/*embryology/metabolism ; *Short Interspersed Nucleotide Elements ; *Transcription, Genetic ; Transcriptional Activation
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  • 70
    Publication Date: 2007-06-30
    Description: HIV-1 integrates into the host chromosome and persists as a provirus flanked by long terminal repeats (LTRs). To date, treatment regimens primarily target the virus enzymes or virus-cell fusion, but not the integrated provirus. We report here the substrate-linked protein evolution of a tailored recombinase that recognizes an asymmetric sequence within an HIV-1 LTR. This evolved recombinase efficiently excised integrated HIV proviral DNA from the genome of infected cells. Although a long way from use in the clinic, we speculate that this type of technology might be adapted in future antiretroviral therapies, among other possible uses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sarkar, Indrani -- Hauber, Ilona -- Hauber, Joachim -- Buchholz, Frank -- New York, N.Y. -- Science. 2007 Jun 29;316(5833):1912-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max-Planck-Institute for Molecular Cell Biology and Genetics, Pfotenhauerstrasse 108, D-01307 Dresden, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17600219" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; DNA Shuffling ; DNA, Viral/*metabolism ; *Directed Molecular Evolution ; Escherichia coli/genetics ; Gene Library ; Genome, Human ; *HIV Long Terminal Repeat ; HIV-1/*metabolism ; HeLa Cells ; Humans ; Integrases/*genetics/*metabolism ; Molecular Sequence Data ; Mutation ; Proviruses/metabolism ; Recombination, Genetic ; *Virus Integration
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  • 71
    Publication Date: 2007-01-16
    Description: A major goal of systems biology is to predict the function of biological networks. Although network topologies have been successfully determined in many cases, the quantitative parameters governing these networks generally have not. Measuring affinities of molecular interactions in high-throughput format remains problematic, especially for transient and low-affinity interactions. We describe a high-throughput microfluidic platform that measures such properties on the basis of mechanical trapping of molecular interactions. With this platform we characterized DNA binding energy landscapes for four eukaryotic transcription factors; these landscapes were used to test basic assumptions about transcription factor binding and to predict their in vivo function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maerkl, Sebastian J -- Quake, Stephen R -- New York, N.Y. -- Science. 2007 Jan 12;315(5809):233-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biochemistry and Molecular Biophysics Option, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17218526" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Basic Helix-Loop-Helix Leucine Zipper Transcription Factors/metabolism ; Basic Helix-Loop-Helix Transcription Factors/*metabolism ; Computational Biology ; Computer Simulation ; DNA/*metabolism ; DNA, Fungal/genetics/metabolism ; DNA-Binding Proteins/metabolism ; E-Box Elements ; Gene Expression Regulation, Fungal ; Helix-Loop-Helix Motifs ; Humans ; *Microfluidic Analytical Techniques ; Oligonucleotide Array Sequence Analysis ; Protein Binding ; Protein Isoforms/metabolism ; Regulatory Sequences, Nucleic Acid ; Repressor Proteins/metabolism ; Saccharomyces cerevisiae/genetics ; Saccharomyces cerevisiae Proteins/metabolism ; *Systems Biology ; Templates, Genetic ; Thermodynamics ; Transcription Factors/metabolism
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  • 72
    Publication Date: 2007-11-03
    Description: Increasingly complex networks of small RNAs act through RNA-interference (RNAi) pathways to regulate gene expression, to mediate antiviral responses, to organize chromosomal domains, and to restrain the spread of selfish genetic elements. Historically, RNAi has been defined as a response to double-stranded RNA. However, some small RNA species may not arise from double-stranded RNA precursors. Yet, like microRNAs and small interfering RNAs, such species guide Argonaute proteins to silencing targets through complementary base-pairing. Silencing can be achieved by corecruitment of accessory factors or through the activity of Argonaute itself, which often has endonucleolytic activity. As a specific and adaptive regulatory system, RNAi is used throughout eukarya, which indicates a long evolutionary history. A likely function of RNAi throughout that history is to protect the genome from both pathogenic and parasitic invaders.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aravin, Alexei A -- Hannon, Gregory J -- Brennecke, Julius -- New York, N.Y. -- Science. 2007 Nov 2;318(5851):761-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Watson School of Biological Sciences, Howard Hughes Medical Institute, Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY 11724, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17975059" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptation, Biological ; Animals ; Argonaute Proteins ; Base Sequence ; *DNA Transposable Elements ; Drosophila Proteins ; Evolution, Molecular ; Gene Silencing ; Molecular Sequence Data ; Proteins/genetics/physiology ; *RNA, Small Interfering ; RNA-Binding Proteins/genetics/*physiology ; RNA-Induced Silencing Complex
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  • 73
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2007-10-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2007 Oct 12;318(5848):190-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17932267" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Classification/methods ; Computational Biology ; DNA Probes ; DNA, Chloroplast/*genetics ; DNA, Intergenic/*genetics ; Databases, Nucleic Acid ; Genes, Plant ; Plants/*classification/*genetics ; Plants, Medicinal/classification/genetics ; Sequence Analysis, DNA ; Trees/classification/genetics
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 74
    Publication Date: 2007-01-06
    Description: MicroRNAs (miRNAs) negatively regulate partially complementary target messenger RNAs. Target selection in animals is dictated primarily by sequences at the miRNA 5' end. We demonstrated that despite their small size, specific miRNAs contain additional sequence elements that control their posttranscriptional behavior, including their subcellular localization. We showed that human miR-29b, in contrast to other studied animal miRNAs, is predominantly localized to the nucleus. The distinctive hexanucleotide terminal motif of miR-29b acts as a transferable nuclear localization element that directs nuclear enrichment of miRNAs or small interfering RNAs to which it is attached. Our results indicate that miRNAs sharing common 5' sequences, considered to be largely redundant, might have distinct functions because of the influence of cis-acting regulatory motifs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hwang, Hun-Way -- Wentzel, Erik A -- Mendell, Joshua T -- New York, N.Y. -- Science. 2007 Jan 5;315(5808):97-100.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program in Human Genetics and Molecular Biology, McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17204650" target="_blank"〉PubMed〈/a〉
    Keywords: Active Transport, Cell Nucleus ; Animals ; Apoptosis ; Base Sequence ; Cell Nucleus/*metabolism ; HeLa Cells ; Humans ; Mice ; MicroRNAs/*chemistry/*metabolism ; Mitosis ; Mutation ; NIH 3T3 Cells ; Oligoribonucleotides/chemistry/*metabolism ; RNA Processing, Post-Transcriptional ; RNA Stability ; RNA, Small Interfering ; Reverse Transcriptase Polymerase Chain Reaction ; Ribonuclease III/metabolism ; Transcription, Genetic
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 75
    Publication Date: 2007-06-02
    Description: Sponges (phylum Porifera) were prolific reef-building organisms during the Paleozoic and Mesozoic approximately 542 to 65 million years ago. These ancient animals inherited components of the first multicellular skeletogenic toolkit from the last common ancestor of the Metazoa. Using a paleogenomics approach, including gene- and protein-expression techniques and phylogenetic reconstruction, we show that a molecular component of this toolkit was the precursor to the alpha-carbonic anhydrases (alpha-CAs), a gene family used by extant animals in a variety of fundamental physiological processes. We used the coralline demosponge Astrosclera willeyana, a "living fossil" that has survived from the Mesozoic, to provide insight into the evolution of the ability to biocalcify, and show that the alpha-CA family expanded from a single ancestral gene through several independent gene-duplication events in sponges and eumetazoans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jackson, Daniel J -- Macis, Luciana -- Reitner, Joachim -- Degnan, Bernard M -- Worheide, Gert -- New York, N.Y. -- Science. 2007 Jun 29;316(5833):1893-5. Epub 2007 May 31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Geoscience Centre Gottingen, Department of Geobiology, Goldschmidtstrasse 3, D-37077 Gottingen, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17540861" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Bicarbonates/metabolism ; *Calcification, Physiologic ; Calcium Carbonate/analysis/metabolism ; Carbonic Anhydrases/chemistry/*genetics/*metabolism ; Computational Biology ; Evolution, Molecular ; Gene Duplication ; Genes ; Genomics ; Molecular Sequence Data ; Porifera/anatomy & histology/enzymology/*genetics/*physiology ; Recombinant Proteins/chemistry/metabolism
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  • 76
    Publication Date: 2007-07-21
    Description: The genomes of individuals from the same species vary in sequence as a result of different evolutionary processes. To examine the patterns of, and the forces shaping, sequence variation in Arabidopsis thaliana, we performed high-density array resequencing of 20 diverse strains (accessions). More than 1 million nonredundant single-nucleotide polymorphisms (SNPs) were identified at moderate false discovery rates (FDRs), and approximately 4% of the genome was identified as being highly dissimilar or deleted relative to the reference genome sequence. Patterns of polymorphism are highly nonrandom among gene families, with genes mediating interaction with the biotic environment having exceptional polymorphism levels. At the chromosomal scale, regional variation in polymorphism was readily apparent. A scan for recent selective sweeps revealed several candidate regions, including a notable example in which almost all variation was removed in a 500-kilobase window. Analyzing the polymorphisms we describe in larger sets of accessions will enable a detailed understanding of forces shaping population-wide sequence variation in A. thaliana.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clark, Richard M -- Schweikert, Gabriele -- Toomajian, Christopher -- Ossowski, Stephan -- Zeller, Georg -- Shinn, Paul -- Warthmann, Norman -- Hu, Tina T -- Fu, Glenn -- Hinds, David A -- Chen, Huaming -- Frazer, Kelly A -- Huson, Daniel H -- Scholkopf, Bernhard -- Nordborg, Magnus -- Ratsch, Gunnar -- Ecker, Joseph R -- Weigel, Detlef -- New York, N.Y. -- Science. 2007 Jul 20;317(5836):338-42.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Max Planck Institute for Developmental Biology, 72076 Tubingen, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17641193" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Arabidopsis/*genetics ; Base Sequence ; Chromosomes, Plant/genetics ; Computational Biology ; Gene Frequency ; Genes, Plant ; *Genetic Variation ; *Genome, Plant ; Molecular Sequence Data ; *Polymorphism, Genetic ; *Polymorphism, Single Nucleotide ; Selection, Genetic ; Sequence Analysis, DNA
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  • 77
    Publication Date: 2007-01-20
    Description: Cysteine (Cys) residues often play critical roles in proteins; however, identification of their specific functions has been limited to case-by-case experimental approaches. We developed a procedure for high-throughput identification of catalytic redox-active Cys in proteins by searching for sporadic selenocysteine-Cys pairs in sequence databases. This method is independent of protein family, structure, and taxon. We used it to selectively detect the majority of known proteins with redox-active Cys and to make additional predictions, one of which was verified. Rapid accumulation of sequence information from genomic and metagenomic projects should allow detection of many additional oxidoreductase families as well as identification of redox-active Cys in these proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fomenko, Dmitri E -- Xing, Weibing -- Adair, Blakely M -- Thomas, David J -- Gladyshev, Vadim N -- AG021518/AG/NIA NIH HHS/ -- GM061603/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2007 Jan 19;315(5810):387-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Nebraska, Lincoln, NE 68588, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17234949" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Animals ; Archaeal Proteins/chemistry ; Bacterial Proteins/chemistry ; Base Sequence ; Catalysis ; Computational Biology ; Cysteine/analysis/*chemistry ; *Databases, Nucleic Acid ; *Databases, Protein ; Enzymes/*chemistry ; Eukaryotic Cells ; Evolution, Molecular ; Methyltransferases/chemistry ; Molecular Sequence Data ; Oxidation-Reduction ; Oxidoreductases/chemistry ; Proteins/*chemistry ; Selenocysteine/chemistry ; Selenoproteins/*chemistry
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  • 78
    Publication Date: 2007-06-26
    Description: Primate genomes contain a large number of endogenous retroviruses and encode evolutionarily dynamic proteins that provide intrinsic immunity to retroviral infections. We report here the resurrection of the core protein of a 4-million-year-old endogenous virus from the chimpanzee genome and show that the human variant of the intrinsic immune protein TRIM5alpha can actively prevent infection by this virus. However, we suggest that selective changes that have occurred in the human lineage during the acquisition of resistance to this virus, and perhaps similar viruses, may have left our species more susceptible to infection by human immunodeficiency virus type 1 (HIV-1).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaiser, Shari M -- Malik, Harmit S -- Emerman, Michael -- New York, N.Y. -- Science. 2007 Jun 22;316(5832):1756-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular and Cellular Biology Program, University of Washington, Seattle, WA 98195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17588933" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Biological Evolution ; Carrier Proteins/genetics/*physiology ; Cats ; Cell Line ; Dna ; Disease Susceptibility ; Endogenous Retroviruses/genetics/*physiology ; Evolution, Molecular ; Gorilla gorilla ; HIV Infections/genetics/immunology ; Hiv-1 ; Humans ; Immunity, Innate/genetics ; Macaca mulatta ; Molecular Sequence Data ; Pan troglodytes/genetics/virology ; Retroviridae Infections/genetics/immunology
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  • 79
    Publication Date: 2007-02-27
    Description: Primary transcripts of certain microRNA (miRNA) genes are subject to RNA editing that converts adenosine to inosine. However, the importance of miRNA editing remains largely undetermined. Here we report that tissue-specific adenosine-to-inosine editing of miR-376 cluster transcripts leads to predominant expression of edited miR-376 isoform RNAs. One highly edited site is positioned in the middle of the 5'-proximal half "seed" region critical for the hybridization of miRNAs to targets. We provide evidence that the edited miR-376 RNA silences specifically a different set of genes. Repression of phosphoribosyl pyrophosphate synthetase 1, a target of the edited miR-376 RNA and an enzyme involved in the uric-acid synthesis pathway, contributes to tight and tissue-specific regulation of uric-acid levels, revealing a previously unknown role for RNA editing in miRNA-mediated gene silencing.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2953418/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2953418/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kawahara, Yukio -- Zinshteyn, Boris -- Sethupathy, Praveen -- Iizasa, Hisashi -- Hatzigeorgiou, Artemis G -- Nishikura, Kazuko -- P01 CA072765/CA/NCI NIH HHS/ -- P01 CA072765-050002/CA/NCI NIH HHS/ -- R01 GM040536/GM/NIGMS NIH HHS/ -- R01 GM040536-16/GM/NIGMS NIH HHS/ -- R01 HL070045/HL/NHLBI NIH HHS/ -- R01 HL070045-04/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2007 Feb 23;315(5815):1137-40.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wistar Institute, 3601 Spruce Street, Philadelphia, PA 19104, USA. ykawahara@wistar.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17322061" target="_blank"〉PubMed〈/a〉
    Keywords: 3' Untranslated Regions ; Adenosine/*metabolism ; Adenosine Deaminase/genetics/metabolism ; Animals ; Base Sequence ; Brain/metabolism ; HeLa Cells ; Humans ; Inosine/*metabolism ; Liver/metabolism ; Mice ; MicroRNAs/chemistry/genetics/*metabolism ; Molecular Sequence Data ; Nucleic Acid Conformation ; Organ Specificity ; Protein-Serine-Threonine Kinases/genetics/metabolism ; *RNA Editing ; *RNA Interference ; RNA-Binding Proteins ; Ribose-Phosphate Pyrophosphokinase/genetics/metabolism ; Uric Acid/metabolism
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  • 80
    Publication Date: 2007-08-11
    Description: Characterization of interspecies differences in gene regulation is crucial for understanding the molecular basis of both phenotypic diversity and evolution. By means of chromatin immunoprecipitation and DNA microarray analysis, the divergence in the binding sites of the pseudohyphal regulators Ste12 and Tec1 was determined in the yeasts Saccharomyces cerevisiae, S. mikatae, and S. bayanus under pseudohyphal conditions. We have shown that most of these sites have diverged across these species, far exceeding the interspecies variation in orthologous genes. A group of Ste12 targets was shown to be bound only in S. mikatae and S. bayanus under pseudohyphal conditions. Many of these genes are targets of Ste12 during mating in S. cerevisiae, indicating that specialization between the two pathways has occurred in this species. Transcription factor binding sites have therefore diverged substantially faster than ortholog content. Thus, gene regulation resulting from transcription factor binding is likely to be a major cause of divergence between related species.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Borneman, Anthony R -- Gianoulis, Tara A -- Zhang, Zhengdong D -- Yu, Haiyuan -- Rozowsky, Joel -- Seringhaus, Michael R -- Wang, Lu Yong -- Gerstein, Mark -- Snyder, Michael -- New York, N.Y. -- Science. 2007 Aug 10;317(5839):815-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06511, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17690298" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Binding Sites ; Candida albicans/genetics/growth & development/metabolism ; Chromatin Immunoprecipitation ; DNA-Binding Proteins/genetics/metabolism ; *Evolution, Molecular ; Fungal Proteins/genetics/*metabolism ; Gene Expression Regulation, Fungal ; Gene Regulatory Networks ; Genes, Fungal ; Oligonucleotide Array Sequence Analysis ; *Regulatory Sequences, Nucleic Acid ; Saccharomyces/*genetics/growth & development/metabolism ; Saccharomyces cerevisiae/*genetics/growth & development/metabolism ; Saccharomyces cerevisiae Proteins/genetics/metabolism ; Transcription Factors/genetics/*metabolism
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  • 81
    Publication Date: 2007-10-20
    Description: Hundreds of species of reef-building corals spawn synchronously over a few nights each year, and moonlight regulates this spawning event. However, the molecular elements underpinning the detection of moonlight remain unknown. Here we report the presence of an ancient family of blue-light-sensing photoreceptors, cryptochromes, in the reef-building coral Acropora millepora. In addition to being cryptochrome genes from one of the earliest-diverging eumetazoan phyla, cry1 and cry2 were expressed preferentially in light. Consistent with potential roles in the synchronization of fundamentally important behaviors such as mass spawning, cry2 expression increased on full moon nights versus new moon nights. Our results demonstrate phylogenetically broad roles of these ancient circadian clock-related molecules in the animal kingdom.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levy, O -- Appelbaum, L -- Leggat, W -- Gothlif, Y -- Hayward, D C -- Miller, D J -- Hoegh-Guldberg, O -- New York, N.Y. -- Science. 2007 Oct 19;318(5849):467-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Marine Studies, University of Queensland, St. Lucia 4072 QLD, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17947585" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anthozoa/*genetics/*metabolism ; Base Sequence ; Circadian Rhythm ; Cryptochromes ; Flavoproteins/analysis/*genetics/*metabolism ; Gene Expression Regulation ; *Light ; Molecular Sequence Data ; Moon
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  • 82
    Publication Date: 2007-06-30
    Description: Circadian and other natural clock-like endogenous rhythms may have evolved to anticipate regular temporal changes in the environment. We report that a mutation in the circadian clock gene timeless in Drosophila melanogaster has arisen and spread by natural selection relatively recently in Europe. We found that, when introduced into different genetic backgrounds, natural and artificial alleles of the timeless gene affect the incidence of diapause in response to changes in light and temperature. The natural mutant allele alters an important life history trait that may enhance the fly's adaptation to seasonal conditions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tauber, Eran -- Zordan, Mauro -- Sandrelli, Federica -- Pegoraro, Mirko -- Osterwalder, Nicolo -- Breda, Carlo -- Daga, Andrea -- Selmin, Alessandro -- Monger, Karen -- Benna, Clara -- Rosato, Ezio -- Kyriacou, Charalambos P -- Costa, Rodolfo -- New York, N.Y. -- Science. 2007 Jun 29;316(5833):1895-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, University of Leicester, Leicester LE1 7RH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17600215" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Sequence ; Animals ; Base Sequence ; Circadian Rhythm/genetics ; Drosophila Proteins/*genetics/physiology ; Drosophila melanogaster/*genetics/*physiology ; Europe ; Evolution, Molecular ; Female ; Geography ; Haplotypes ; Molecular Sequence Data ; Mutation ; *Photoperiod ; Phylogeny ; Polymorphism, Genetic ; Protein Isoforms/genetics/physiology ; Reproduction ; *Seasons ; *Selection, Genetic ; Temperature ; Transformation, Genetic
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  • 83
    Publication Date: 2007-10-27
    Description: Plant disease resistance (R) proteins recognize matching pathogen avirulence proteins. Alleles of the pepper R gene Bs3 mediate recognition of the Xanthomonas campestris pv. vesicatoria (Xcv) type III effector protein AvrBs3 and its deletion derivative AvrBs3Deltarep16. Pepper Bs3 and its allelic variant Bs3-E encode flavin monooxygenases with a previously unknown structure and are transcriptionally activated by the Xcv effector proteins AvrBs3 and AvrBs3Deltarep16, respectively. We found that recognition specificity resides in the Bs3 and Bs3-E promoters and is determined by binding of AvrBs3 or AvrBs3Deltarep16 to a defined promoter region. Our data suggest a recognition mechanism in which the Avr protein binds and activates the promoter of the cognate R gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Romer, Patrick -- Hahn, Simone -- Jordan, Tina -- Strauss, Tina -- Bonas, Ulla -- Lahaye, Thomas -- New York, N.Y. -- Science. 2007 Oct 26;318(5850):645-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Biology, Department of Genetics, Martin-Luther-University Halle-Wittenberg, D-06099 Halle (Saale), Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17962564" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Bacterial Proteins/genetics/*metabolism ; Base Sequence ; Capsicum/*genetics/*microbiology ; Chromosomes, Artificial, Bacterial ; Gene Expression Regulation, Plant ; *Genes, Plant ; Mixed Function Oxygenases/chemistry/*genetics ; Molecular Sequence Data ; Plant Diseases/immunology/microbiology ; Plant Leaves/genetics/metabolism ; Plant Proteins/chemistry/genetics ; *Promoter Regions, Genetic ; Tobacco/genetics ; Transcription, Genetic ; Transformation, Genetic ; Xanthomonas campestris/genetics/metabolism/*pathogenicity
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  • 84
    Publication Date: 2007-10-20
    Description: Nonhomologous end joining (NHEJ) is a critical DNA double-strand break (DSB) repair pathway required to maintain genome stability. Many prokaryotes possess a minimalist NHEJ apparatus required to repair DSBs during stationary phase, composed of two conserved core proteins, Ku and ligase D (LigD). The crystal structure of Mycobacterium tuberculosis polymerase domain of LigD mediating the synapsis of two noncomplementary DNA ends revealed a variety of interactions, including microhomology base pairing, mismatched and flipped-out bases, and 3' termini forming hairpin-like ends. Biochemical and biophysical studies confirmed that polymerase-induced end synapsis also occurs in solution. We propose that this DNA synaptic structure reflects an intermediate bridging stage of the NHEJ process, before end processing and ligation, with both the polymerase and the DNA sequence playing pivotal roles in determining the sequential order of synapsis and remodeling before end joining.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brissett, Nigel C -- Pitcher, Robert S -- Juarez, Raquel -- Picher, Angel J -- Green, Andrew J -- Dafforn, Timothy R -- Fox, Gavin C -- Blanco, Luis -- Doherty, Aidan J -- BB/D522746/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- G120/738/Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2007 Oct 19;318(5849):456-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Genome Damage and Stability Centre, University of Sussex, Brighton BN1 9RQ, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17947582" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Crystallography, X-Ray ; DNA Ligases/*chemistry/genetics/metabolism ; *DNA Repair ; DNA, Bacterial/*chemistry/metabolism ; Dimerization ; Models, Molecular ; Molecular Sequence Data ; Mutation ; Mycobacterium tuberculosis/*chemistry/enzymology/genetics/metabolism ; Protein Conformation ; Protein Structure, Tertiary
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  • 85
    Publication Date: 2007-12-01
    Description: Molecular patterns in pathogenic RNAs can be recognized by the innate immune system, and a component of this response is the interferon-induced enzyme RNA-activated protein kinase (PKR). The major activators of PKR have been proposed to be long double-stranded RNAs. We report that RNAs with very limited secondary structures activate PKR in a 5'-triphosphate-dependent fashion in vitro and in vivo. Activation of PKR by 5'-triphosphate RNA is independent of RIG-I and is enhanced by treatment with type 1 interferon (IFN-alpha). Surveillance of molecular features at the 5' end of transcripts by PKR presents a means of allowing pathogenic RNA to be distinguished from self-RNA. The evidence presented here suggests that this form of RNA-based discrimination may be a critical step in mounting an early immune response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nallagatla, Subba Rao -- Hwang, Jungwook -- Toroney, Rebecca -- Zheng, Xiaofeng -- Cameron, Craig E -- Bevilacqua, Philip C -- GM58709/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2007 Nov 30;318(5855):1455-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Pennsylvania State University, University Park, PA 16802, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18048689" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Line, Tumor ; Cercopithecus aethiops ; DEAD-box RNA Helicases/metabolism ; Enzyme Activation ; Eukaryotic Initiation Factor-2/metabolism ; Humans ; Immunity, Innate ; Interferon-alpha/immunology/metabolism ; Interferon-beta/metabolism ; Molecular Sequence Data ; *Nucleic Acid Conformation ; Phosphoric Monoester Hydrolases/metabolism ; Polyphosphates/metabolism ; RNA/chemistry/genetics/*metabolism ; RNA, Double-Stranded/chemistry/genetics/*metabolism ; Transfection ; Vero Cells ; eIF-2 Kinase/*metabolism
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  • 86
    Publication Date: 2007-12-01
    Description: Both limiting and toxic soil concentrations of the essential micronutrient boron represent major limitations to crop production worldwide. We identified Bot1, a BOR1 ortholog, as the gene responsible for the superior boron-toxicity tolerance of the Algerian barley landrace Sahara 3771 (Sahara). Bot1 was located at the tolerance locus by high-resolution mapping. Compared to intolerant genotypes, Sahara contains about four times as many Bot1 gene copies, produces substantially more Bot1 transcript, and encodes a Bot1 protein with a higher capacity to provide tolerance in yeast. Bot1 transcript levels identified in barley tissues are consistent with a role in limiting the net entry of boron into the root and in the disposal of boron from leaves via hydathode guttation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sutton, Tim -- Baumann, Ute -- Hayes, Julie -- Collins, Nicholas C -- Shi, Bu-Jun -- Schnurbusch, Thorsten -- Hay, Alison -- Mayo, Gwenda -- Pallotta, Margaret -- Tester, Mark -- Langridge, Peter -- New York, N.Y. -- Science. 2007 Nov 30;318(5855):1446-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Australian Centre for Plant Functional Genomics, School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Private Mail Bag 1, Glen Osmond, South Australia 5064, Australia. tim.sutton@acpfg.com.au〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18048688" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Biological Transport ; Boron/metabolism/*toxicity ; Boron Compounds/*metabolism/*toxicity ; Chromosome Mapping ; *Genes, Plant ; Hordeum/*drug effects/*genetics/metabolism ; Membrane Transport Proteins/chemistry/*genetics/metabolism ; Molecular Sequence Data ; Plant Lectins/genetics/metabolism ; Plant Proteins/chemistry/genetics/metabolism ; Plant Roots/genetics/metabolism ; Quantitative Trait Loci ; Saccharomyces cerevisiae/genetics/growth & development/metabolism ; Transcription, Genetic
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  • 87
    Publication Date: 2007-05-19
    Description: We present a draft sequence of the genome of Aedes aegypti, the primary vector for yellow fever and dengue fever, which at approximately 1376 million base pairs is about 5 times the size of the genome of the malaria vector Anopheles gambiae. Nearly 50% of the Ae. aegypti genome consists of transposable elements. These contribute to a factor of approximately 4 to 6 increase in average gene length and in sizes of intergenic regions relative to An. gambiae and Drosophila melanogaster. Nonetheless, chromosomal synteny is generally maintained among all three insects, although conservation of orthologous gene order is higher (by a factor of approximately 2) between the mosquito species than between either of them and the fruit fly. An increase in genes encoding odorant binding, cytochrome P450, and cuticle domains relative to An. gambiae suggests that members of these protein families underpin some of the biological differences between the two mosquito species.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2868357/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2868357/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nene, Vishvanath -- Wortman, Jennifer R -- Lawson, Daniel -- Haas, Brian -- Kodira, Chinnappa -- Tu, Zhijian Jake -- Loftus, Brendan -- Xi, Zhiyong -- Megy, Karyn -- Grabherr, Manfred -- Ren, Quinghu -- Zdobnov, Evgeny M -- Lobo, Neil F -- Campbell, Kathryn S -- Brown, Susan E -- Bonaldo, Maria F -- Zhu, Jingsong -- Sinkins, Steven P -- Hogenkamp, David G -- Amedeo, Paolo -- Arensburger, Peter -- Atkinson, Peter W -- Bidwell, Shelby -- Biedler, Jim -- Birney, Ewan -- Bruggner, Robert V -- Costas, Javier -- Coy, Monique R -- Crabtree, Jonathan -- Crawford, Matt -- Debruyn, Becky -- Decaprio, David -- Eiglmeier, Karin -- Eisenstadt, Eric -- El-Dorry, Hamza -- Gelbart, William M -- Gomes, Suely L -- Hammond, Martin -- Hannick, Linda I -- Hogan, James R -- Holmes, Michael H -- Jaffe, David -- Johnston, J Spencer -- Kennedy, Ryan C -- Koo, Hean -- Kravitz, Saul -- Kriventseva, Evgenia V -- Kulp, David -- Labutti, Kurt -- Lee, Eduardo -- Li, Song -- Lovin, Diane D -- Mao, Chunhong -- Mauceli, Evan -- Menck, Carlos F M -- Miller, Jason R -- Montgomery, Philip -- Mori, Akio -- Nascimento, Ana L -- Naveira, Horacio F -- Nusbaum, Chad -- O'leary, Sinead -- Orvis, Joshua -- Pertea, Mihaela -- Quesneville, Hadi -- Reidenbach, Kyanne R -- Rogers, Yu-Hui -- Roth, Charles W -- Schneider, Jennifer R -- Schatz, Michael -- Shumway, Martin -- Stanke, Mario -- Stinson, Eric O -- Tubio, Jose M C -- Vanzee, Janice P -- Verjovski-Almeida, Sergio -- Werner, Doreen -- White, Owen -- Wyder, Stefan -- Zeng, Qiandong -- Zhao, Qi -- Zhao, Yongmei -- Hill, Catherine A -- Raikhel, Alexander S -- Soares, Marcelo B -- Knudson, Dennis L -- Lee, Norman H -- Galagan, James -- Salzberg, Steven L -- Paulsen, Ian T -- Dimopoulos, George -- Collins, Frank H -- Birren, Bruce -- Fraser-Liggett, Claire M -- Severson, David W -- 079059/Wellcome Trust/United Kingdom -- 5 R01 AI61576-2/AI/NIAID NIH HHS/ -- R01 AI059492/AI/NIAID NIH HHS/ -- R01 LM006845/LM/NLM NIH HHS/ -- R01 LM006845-08/LM/NLM NIH HHS/ -- R37 AI024716/AI/NIAID NIH HHS/ -- UO1 AI50936/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2007 Jun 22;316(5832):1718-23. Epub 2007 May 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Genomic Research, 9712 Medical Center Drive, Rockville, MD 20850, USA. nene@tigr.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17510324" target="_blank"〉PubMed〈/a〉
    Keywords: Aedes/*genetics/metabolism ; Animals ; Anopheles gambiae/genetics/metabolism ; Arboviruses ; Base Sequence ; DNA Transposable Elements ; Dengue/prevention & control/transmission ; Drosophila melanogaster/genetics ; Female ; Genes, Insect ; *Genome, Insect ; Humans ; Insect Proteins/genetics ; Insect Vectors/*genetics/metabolism ; Male ; Membrane Transport Proteins/genetics ; Molecular Sequence Data ; Multigene Family ; Protein Structure, Tertiary/genetics ; Sequence Analysis, DNA ; Sex Characteristics ; Sex Determination Processes ; Species Specificity ; Synteny ; Transcription, Genetic ; Yellow Fever/prevention & control/transmission
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  • 88
    Publication Date: 2007-01-27
    Description: A mutualistic association between a fungal endophyte and a tropical panic grass allows both organisms to grow at high soil temperatures. We characterized a virus from this fungus that is involved in the mutualistic interaction. Fungal isolates cured of the virus are unable to confer heat tolerance, but heat tolerance is restored after the virus is reintroduced. The virus-infected fungus confers heat tolerance not only to its native monocot host but also to a eudicot host, which suggests that the underlying mechanism involves pathways conserved between these two groups of plants.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marquez, Luis M -- Redman, Regina S -- Rodriguez, Russell J -- Roossinck, Marilyn J -- New York, N.Y. -- Science. 2007 Jan 26;315(5811):513-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Plant Biology Division, Samuel Roberts Noble Foundation, Post Office Box 2180, Ardmore, OK 73402, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17255511" target="_blank"〉PubMed〈/a〉
    Keywords: Ascomycota/growth & development/*physiology/*virology ; Base Sequence ; Hot Temperature ; Lycopersicon esculentum/microbiology/physiology ; Molecular Sequence Data ; Open Reading Frames ; Plant Leaves/metabolism ; Poaceae/growth & development/*microbiology/*physiology ; RNA Viruses/classification/genetics/isolation & purification/*physiology ; RNA, Double-Stranded/genetics/metabolism ; RNA, Viral/genetics/metabolism ; Reactive Oxygen Species/metabolism ; *Symbiosis
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  • 89
    Publication Date: 2007-09-01
    Description: Somatic hypermutation (SHM) is a major means by which diversity is achieved in antibody genes, and it is initiated by the deamination of cytosines to uracils in DNA by activation-induced deaminase (AID). However, the process that leads from these initiating deamination events to mutations at other residues remains poorly understood. We demonstrate that a single cytosine on the top (nontemplate) strand is sufficient to recruit AID and lead to mutations of upstream and downstream A/T residues. In contrast, the targeting of cytosines on the bottom strand by AID does not lead to substantial mutation of neighboring residues. This strand asymmetry is eliminated in mice deficient in mismatch repair, indicating that the error-prone mismatch repair machinery preferentially targets top-strand uracils in a way that promotes SHM during the antibody response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Unniraman, Shyam -- Schatz, David G -- New York, N.Y. -- Science. 2007 Aug 31;317(5842):1227-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06511, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17761884" target="_blank"〉PubMed〈/a〉
    Keywords: Adenine/metabolism ; Animals ; B-Lymphocytes ; Base Sequence ; Cytidine Deaminase/*metabolism ; Cytosine/*metabolism ; DNA Mismatch Repair ; Deamination ; *Genes, Immunoglobulin ; Immunoglobulin Variable Region/genetics ; Immunoglobulin kappa-Chains/genetics ; Mice ; Mice, Transgenic ; Molecular Sequence Data ; *Somatic Hypermutation, Immunoglobulin ; Thymine/metabolism ; Transgenes ; Uracil/metabolism
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  • 90
    Publication Date: 2007-02-10
    Description: Zhang et al. (Research Articles, 11 November 2005, p. 996) reported that obestatin, a peptide derived from the ghrelin precursor, activated the orphan G protein-coupled receptor GPR39. However, we found that I125-obestatin does not bind GPR39 and observed no effects of obestatin on GPR39-transfected cells in various functional assays (cyclic adenosine monophosphate production, calcium mobilization, and GPR39 internalization). Our results indicate that obestatin is not the cognate ligand for GPR39.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chartrel, N -- Alvear-Perez, R -- Leprince, J -- Iturrioz, X -- Reaux-Le Goazigo, A -- Audinot, V -- Chomarat, P -- Coge, F -- Nosjean, O -- Rodriguez, M -- Galizzi, J P -- Boutin, J A -- Vaudry, H -- Llorens-Cortes, C -- New York, N.Y. -- Science. 2007 Feb 9;315(5813):766; author reply 766.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut National de la Sante et de la Recherche Medicale (INSERM), U413, Laboratory of Cellular and Molecular Neuroendocrinology, and European Institute for Peptide Research (IFRMP 23), University of Rouen, 76821 Mont-Saint-Aignan, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17289961" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; CHO Cells ; Calcium/metabolism ; Cell Membrane/metabolism ; Colforsin/pharmacology ; Cricetinae ; Cricetulus ; Cyclic AMP/metabolism ; Ghrelin ; Humans ; Ligands ; Molecular Sequence Data ; Peptide Hormones/genetics/*metabolism/pharmacology ; Pituitary Gland/cytology/metabolism ; Protein Binding ; Receptors, G-Protein-Coupled/genetics/*metabolism ; Transfection
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  • 91
    Publication Date: 2007-01-06
    Description: Dendritic cells (DCs) process and present self and foreign antigens to induce tolerance or immunity. In vitro models suggest that induction of immunity is controlled by regulating the presentation of antigen, but little is known about how DCs control antigen presentation in vivo. To examine antigen processing and presentation in vivo, we specifically targeted antigens to two major subsets of DCs by using chimeric monoclonal antibodies. Unlike CD8+ DCs that express the cell surface protein CD205, CD8- DCs, which are positive for the 33D1 antigen, are specialized for presentation on major histocompatibility complex (MHC) class II. This difference in antigen processing is intrinsic to the DC subsets and is associated with increased expression of proteins involved in MHC processing.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dudziak, Diana -- Kamphorst, Alice O -- Heidkamp, Gordon F -- Buchholz, Veit R -- Trumpfheller, Christine -- Yamazaki, Sayuri -- Cheong, Cheolho -- Liu, Kang -- Lee, Han-Woong -- Park, Chae Gyu -- Steinman, Ralph M -- Nussenzweig, Michel C -- New York, N.Y. -- Science. 2007 Jan 5;315(5808):107-11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Immunology, The Rockefeller University, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17204652" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibodies, Monoclonal/immunology ; *Antigen Presentation ; Antigens, CD/analysis/immunology ; Antigens, CD8/analysis/immunology ; Base Sequence ; Dendritic Cells/*immunology ; Histocompatibility Antigens Class I/immunology ; Histocompatibility Antigens Class II/immunology ; Lectins, C-Type/analysis/immunology ; Lymphocyte Activation ; Mice ; Mice, Inbred C3H ; Mice, Inbred C57BL ; Mice, Transgenic ; Molecular Sequence Data ; Oligonucleotide Array Sequence Analysis ; Receptors, Cell Surface/analysis/immunology ; T-Lymphocytes/immunology
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  • 92
    Publication Date: 2006-11-18
    Description: Using single-molecule DNA nanomanipulation, we show that abortive initiation involves DNA "scrunching"--in which RNA polymerase (RNAP) remains stationary and unwinds and pulls downstream DNA into itself--and that scrunching requires RNA synthesis and depends on RNA length. We show further that promoter escape involves scrunching, and that scrunching occurs in most or all instances of promoter escape. Our results support the existence of an obligatory stressed intermediate, with approximately one turn of additional DNA unwinding, in escape and are consistent with the proposal that stress in this intermediate provides the driving force to break RNAP-promoter and RNAP-initiation-factor interactions in escape.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2754787/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2754787/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Revyakin, Andrey -- Liu, Chenyu -- Ebright, Richard H -- Strick, Terence R -- GM41376/GM/NIGMS NIH HHS/ -- R01 GM041376/GM/NIGMS NIH HHS/ -- R01 GM041376-15/GM/NIGMS NIH HHS/ -- R01 GM041376-16/GM/NIGMS NIH HHS/ -- R01 GM041376-17/GM/NIGMS NIH HHS/ -- R01 GM041376-18/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2006 Nov 17;314(5802):1139-43.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Waksman Institute, and Department of Chemistry, Rutgers University, Piscataway, NJ 08854, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17110577" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Biomechanical Phenomena ; DNA/chemistry/*metabolism ; DNA-Directed RNA Polymerases/*metabolism ; Models, Genetic ; Molecular Sequence Data ; Nucleic Acid Conformation ; *Promoter Regions, Genetic ; RNA/biosynthesis ; Transcription Initiation Site/physiology ; Transcription, Genetic/*physiology
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  • 93
    Publication Date: 2006-11-11
    Description: The molecular mechanisms controlling human hair growth and scalp hair loss are poorly understood. By screening about 350,000 individuals in two populations from the Volga-Ural region of Russia, we identified a gene mutation in families who show an inherited form of hair loss and a hair growth defect. Affected individuals were homozygous for a deletion in the LIPH gene on chromosome 3q27, caused by short interspersed nuclear element-retrotransposon-mediated recombination. The LIPH gene is expressed in hair follicles and encodes a phospholipase called lipase H (alternatively known as membrane-associated phosphatidic acid-selective phospholipase A1alpha), an enzyme that regulates the production of bioactive lipids. These results suggest that lipase H participates in hair growth and development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kazantseva, Anastasiya -- Goltsov, Andrey -- Zinchenko, Rena -- Grigorenko, Anastasia P -- Abrukova, Anna V -- Moliaka, Yuri K -- Kirillov, Alexander G -- Guo, Zhiru -- Lyle, Stephen -- Ginter, Evgeny K -- Rogaev, Evgeny I -- K08-AR02179/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 2006 Nov 10;314(5801):982-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Brudnick Neuropsychiatric Research Institute, Department of Psychiatry, University of Massachusetts Medical School, 303 Belmont Street, Worcester, MA 01604, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17095700" target="_blank"〉PubMed〈/a〉
    Keywords: Alu Elements ; Amino Acid Sequence ; Base Sequence ; Chromosomes, Human, Pair 3/genetics ; Exons ; Female ; Gene Deletion ; Gene Expression ; Genetic Markers ; Hair/*growth & development ; Hair Follicle/enzymology ; Heterozygote ; Homozygote ; Humans ; Hypotrichosis/*genetics ; Lipase/chemistry/*genetics/metabolism ; Lipid Metabolism ; Lod Score ; Male ; Molecular Sequence Data ; Pedigree ; Protein Structure, Tertiary ; Recombination, Genetic ; Retroelements ; Russia ; Tandem Repeat Sequences
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  • 94
    Publication Date: 2006-11-25
    Description: Clostridium novyi-NT is an anaerobic bacterium that can infect hypoxic regions within experimental tumors. Because C. novyi-NT lyses red blood cells, we hypothesized that its membrane-disrupting properties could be exploited to enhance the release of liposome-encapsulated drugs within tumors. Here, we show that treatment of mice bearing large, established tumors with C. novyi-NT plus a single dose of liposomal doxorubicin often led to eradication of the tumors. The bacterial factor responsible for the enhanced drug release was identified as a previously unrecognized protein termed liposomase. This protein could potentially be incorporated into diverse experimental approaches for the specific delivery of chemotherapeutic agents to tumors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cheong, Ian -- Huang, Xin -- Bettegowda, Chetan -- Diaz, Luis A Jr -- Kinzler, Kenneth W -- Zhou, Shibin -- Vogelstein, Bert -- CA062924/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2006 Nov 24;314(5803):1308-11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and the Ludwig Center for Cancer Genetics and Therapeutics, Johns Hopkins Kimmel Comprehensive Cancer Center, Baltimore, MD 21231, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17124324" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antineoplastic Agents/*administration & dosage/pharmacokinetics/therapeutic use ; Bacterial Proteins/chemistry/genetics/*metabolism ; Base Sequence ; Camptothecin/administration & dosage/analogs & ; derivatives/pharmacokinetics/therapeutic use ; Cell Line, Tumor ; Cloning, Molecular ; Clostridium/*chemistry/genetics ; Colorectal Neoplasms/*drug therapy ; Doxorubicin/*administration & dosage/pharmacokinetics/therapeutic use ; Drug Carriers ; Humans ; Lipase/chemistry/genetics/*metabolism ; Lipid Bilayers/chemistry ; Liposomes/chemistry/*metabolism ; Mice ; Molecular Sequence Data ; Mutation ; Neoplasm Transplantation ; Protein Structure, Tertiary
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  • 95
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2006-01-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Normile, Dennis -- New York, N.Y. -- Science. 2006 Jan 27;311(5760):457.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16439636" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Birds ; Databases, Nucleic Acid ; Genetic Variation ; *Genome, Viral ; Humans ; Influenza A Virus, H5N1 Subtype/*genetics/*pathogenicity ; Influenza in Birds/*virology ; Influenza, Human/*virology ; Ligands ; Poultry ; RNA, Viral/genetics ; Viral Nonstructural Proteins/chemistry/*genetics/metabolism ; Virulence/genetics
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  • 96
    Publication Date: 2006-10-07
    Description: A long-standing debate in evolutionary biology concerns whether species diverge gradually through time or by punctuational episodes at the time of speciation. We found that approximately 22% of substitutional changes at the DNA level can be attributed to punctuational evolution, and the remainder accumulates from background gradual divergence. Punctuational effects occur at more than twice the rate in plants and fungi than in animals, but the proportion of total divergence attributable to punctuational change does not vary among these groups. Punctuational changes cause departures from a clock-like tempo of evolution, suggesting that they should be accounted for in deriving dates from phylogenies. Punctuational episodes of evolution may play a larger role in promoting evolutionary divergence than has previously been appreciated.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pagel, Mark -- Venditti, Chris -- Meade, Andrew -- New York, N.Y. -- Science. 2006 Oct 6;314(5796):119-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Biological Sciences, University of Reading, Whiteknights, Reading RG6 6AJ, UK. m.pagel@rdg.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17023657" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Bayes Theorem ; DNA/*genetics ; DNA, Fungal/genetics ; DNA, Plant/genetics ; *Evolution, Molecular ; Founder Effect ; Fungi/classification/genetics ; *Genetic Speciation ; Genetic Variation ; Likelihood Functions ; Mathematics ; Models, Statistical ; Mutation ; Phylogeny ; Plants/classification/genetics ; Sequence Alignment
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  • 97
    Publication Date: 2006-12-16
    Description: A methanogenic archaeon isolated from deep-sea hydrothermal vent fluid was found to reduce N(2) to NH(3) at up to 92 degrees C, which is 28 degrees C higher than the current upper temperature limit of biological nitrogen fixation. The 16S ribosomal RNA gene of the hyperthermophilic nitrogen fixer, designated FS406-22, was 99% similar to that of non-nitrogen fixing Methanocaldococcus jannaschii DSM 2661. At its optimal growth temperature of 90 degrees C, FS406-22 incorporated (15)N(2) and expressed nifH messenger RNA. This increase in the temperature limit of nitrogen fixation could reveal a broader range of conditions for life in the subseafloor biosphere and other nitrogen-limited ecosystems than previously estimated.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mehta, Mausmi P -- Baross, John A -- New York, N.Y. -- Science. 2006 Dec 15;314(5806):1783-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Oceanography, University of Washington, Seattle, WA 98195, USA. mausmi@alum.mit.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17170307" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Archaea/classification/genetics/*isolation & purification/*metabolism ; Archaeal Proteins/chemistry/genetics/metabolism ; Base Sequence ; *Ecosystem ; Genes, Archaeal ; Genes, rRNA ; Geologic Sediments/microbiology ; *Hot Temperature ; Molecular Sequence Data ; Nitrogen/metabolism ; *Nitrogen Fixation/genetics ; Nitrogenase/chemistry/*genetics/metabolism ; Operon ; Oxidation-Reduction ; Oxidoreductases/chemistry/genetics/metabolism ; Pacific Ocean ; Phylogeny ; RNA, Ribosomal, 16S/genetics ; Seawater/*microbiology ; Volcanic Eruptions
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  • 98
    Publication Date: 2006-12-23
    Description: Cartilaginous fishes represent the living group of jawed vertebrates that diverged from the common ancestor of human and teleost fish lineages about 530 million years ago. We generated approximately 1.4x genome sequence coverage for a cartilaginous fish, the elephant shark (Callorhinchus milii), and compared this genome with the human genome to identify conserved noncoding elements (CNEs). The elephant shark sequence revealed twice as many CNEs as were identified by whole-genome comparisons between teleost fishes and human. The ancient vertebrate-specific CNEs in the elephant shark and human genomes are likely to play key regulatory roles in vertebrate gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Venkatesh, Byrappa -- Kirkness, Ewen F -- Loh, Yong-Hwee -- Halpern, Aaron L -- Lee, Alison P -- Johnson, Justin -- Dandona, Nidhi -- Viswanathan, Lakshmi D -- Tay, Alice -- Venter, J Craig -- Strausberg, Robert L -- Brenner, Sydney -- New York, N.Y. -- Science. 2006 Dec 22;314(5807):1892.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Molecular and Cell Biology, 61 Biopolis Drive, Singapore 138673. mcbbv@imcb.a-star.edu.sg〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17185593" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; *Conserved Sequence ; DNA, Intergenic ; Enhancer Elements, Genetic ; Evolution, Molecular ; Genome ; *Genome, Human ; Humans ; Molecular Sequence Data ; *Regulatory Sequences, Nucleic Acid ; Sharks/*genetics ; Takifugu/genetics ; Zebrafish/genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 99
    Publication Date: 2006-12-16
    Description: Antibody class switching in activated B cells uses class switch recombination (CSR), which joins activation-induced cytidine deaminase (AID)-dependent double-strand breaks (DSBs) within two large immunoglobulin heavy chain (IgH) locus switch (S) regions that lie up to 200 kilobases apart. To test postulated roles of S regions and AID in CSR, we generated mutant B cells in which donor Smu and accepter Sgamma1 regions were replaced with yeast I-SceI endonuclease sites. We found that site-specific I-SceI DSBs mediate recombinational IgH locus class switching from IgM to IgG1 without S regions or AID. We propose that CSR evolved to exploit a general DNA repair process that promotes joining of widely separated DSBs within a chromosome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zarrin, Ali A -- Del Vecchio, Catherine -- Tseng, Eva -- Gleason, Megan -- Zarin, Payam -- Tian, Ming -- Alt, Frederick W -- 2P01AI031541-15/AI/NIAID NIH HHS/ -- P01CA092625-05/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2007 Jan 19;315(5810):377-81. Epub 2006 Dec 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Children's Hospital, CBR Institute for Biomedical Research, and Department of Genetics, Harvard University Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17170253" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes/*immunology ; Base Sequence ; Cell Line ; Cytidine Deaminase/*metabolism ; *DNA Breaks, Double-Stranded ; DNA Repair ; Deoxyribonucleases, Type II Site-Specific/genetics/*metabolism ; Embryonic Stem Cells ; Gene Targeting ; Genes, Immunoglobulin Heavy Chain ; Hybridomas ; *Immunoglobulin Class Switching ; Immunoglobulin G/biosynthesis/genetics ; Immunoglobulin M/biosynthesis/genetics ; *Immunoglobulin Switch Region ; Lymphocyte Activation ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Mutation ; Recombination, Genetic ; Saccharomyces cerevisiae/enzymology ; Saccharomyces cerevisiae Proteins
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 100
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2006-12-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fontana, Walter -- New York, N.Y. -- Science. 2006 Dec 8;314(5805):1552-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Systems Biology, Harvard University, Boston, MA 02115, USA. walter@hms.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17158311" target="_blank"〉PubMed〈/a〉
    Keywords: Base Pairing ; Base Sequence ; *Biotechnology ; *Computers, Molecular ; *Dna ; Logic ; Nanostructures ; *Nanotechnology ; Nucleic Acid Conformation ; Robotics ; Systems Biology ; Thermodynamics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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