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  • Mutation  (61)
  • *Biological Evolution  (34)
  • American Association for the Advancement of Science (AAAS)  (94)
  • 2005-2009  (94)
  • 1950-1954
  • 2008  (40)
  • 2006  (54)
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  • 2005-2009  (94)
  • 1950-1954
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  • 1
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    Phytophthora genome sequences uncover evolutionary origins and mechanisms of pathogenesis (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-09-02
    Description: Draft genome sequences have been determined for the soybean pathogen Phytophthora sojae and the sudden oak death pathogen Phytophthora ramorum. Oomycetes such as these Phytophthora species share the kingdom Stramenopila with photosynthetic algae such as diatoms, and the presence of many Phytophthora genes of probable phototroph origin supports a photosynthetic ancestry for the stramenopiles. Comparison of the two species' genomes reveals a rapid expansion and diversification of many protein families associated with plant infection such as hydrolases, ABC transporters, protein toxins, proteinase inhibitors, and, in particular, a superfamily of 700 proteins with similarity to known oomycete avirulence genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tyler, Brett M -- Tripathy, Sucheta -- Zhang, Xuemin -- Dehal, Paramvir -- Jiang, Rays H Y -- Aerts, Andrea -- Arredondo, Felipe D -- Baxter, Laura -- Bensasson, Douda -- Beynon, Jim L -- Chapman, Jarrod -- Damasceno, Cynthia M B -- Dorrance, Anne E -- Dou, Daolong -- Dickerman, Allan W -- Dubchak, Inna L -- Garbelotto, Matteo -- Gijzen, Mark -- Gordon, Stuart G -- Govers, Francine -- Grunwald, Niklaus J -- Huang, Wayne -- Ivors, Kelly L -- Jones, Richard W -- Kamoun, Sophien -- Krampis, Konstantinos -- Lamour, Kurt H -- Lee, Mi-Kyung -- McDonald, W Hayes -- Medina, Monica -- Meijer, Harold J G -- Nordberg, Eric K -- Maclean, Donald J -- Ospina-Giraldo, Manuel D -- Morris, Paul F -- Phuntumart, Vipaporn -- Putnam, Nicholas H -- Rash, Sam -- Rose, Jocelyn K C -- Sakihama, Yasuko -- Salamov, Asaf A -- Savidor, Alon -- Scheuring, Chantel F -- Smith, Brian M -- Sobral, Bruno W S -- Terry, Astrid -- Torto-Alalibo, Trudy A -- Win, Joe -- Xu, Zhanyou -- Zhang, Hongbin -- Grigoriev, Igor V -- Rokhsar, Daniel S -- Boore, Jeffrey L -- BB/C509123/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- New York, N.Y. -- Science. 2006 Sep 1;313(5791):1261-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Virginia Bioinformatics Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA. bmtyler@vt.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16946064" target="_blank"〉PubMed〈/a〉
    Keywords: Algal Proteins/genetics/physiology ; *Biological Evolution ; DNA, Algal/*genetics ; Genes ; *Genome ; Hydrolases/genetics/metabolism ; Photosynthesis/genetics ; Phylogeny ; Physical Chromosome Mapping ; Phytophthora/classification/*genetics/*pathogenicity/physiology ; Plant Diseases/microbiology ; Polymorphism, Single Nucleotide ; Repetitive Sequences, Nucleic Acid ; Sequence Analysis, DNA ; Symbiosis ; Toxins, Biological/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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  • 2
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    Losartan, an AT1 antagonist, prevents aortic aneurysm in a mouse model of Marfan syndrome (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-04-08
    Description: Aortic aneurysm and dissection are manifestations of Marfan syndrome (MFS), a disorder caused by mutations in the gene that encodes fibrillin-1. Selected manifestations of MFS reflect excessive signaling by the transforming growth factor-beta (TGF-beta) family of cytokines. We show that aortic aneurysm in a mouse model of MFS is associated with increased TGF-beta signaling and can be prevented by TGF-beta antagonists such as TGF-beta-neutralizing antibody or the angiotensin II type 1 receptor (AT1) blocker, losartan. AT1 antagonism also partially reversed noncardiovascular manifestations of MFS, including impaired alveolar septation. These data suggest that losartan, a drug already in clinical use for hypertension, merits investigation as a therapeutic strategy for patients with MFS and has the potential to prevent the major life-threatening manifestation of this disorder.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1482474/" 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/PMC1482474/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Habashi, Jennifer P -- Judge, Daniel P -- Holm, Tammy M -- Cohn, Ronald D -- Loeys, Bart L -- Cooper, Timothy K -- Myers, Loretha -- Klein, Erin C -- Liu, Guosheng -- Calvi, Carla -- Podowski, Megan -- Neptune, Enid R -- Halushka, Marc K -- Bedja, Djahida -- Gabrielson, Kathleen -- Rifkin, Daniel B -- Carta, Luca -- Ramirez, Francesco -- Huso, David L -- Dietz, Harry C -- K08 HL067056/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2006 Apr 7;312(5770):117-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Pediatrics, 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/16601194" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenergic beta-Antagonists/administration & dosage/therapeutic use ; Angiotensin II Type 1 Receptor Blockers/administration & dosage/*therapeutic use ; Animals ; Antibodies/immunology ; Aorta/pathology ; Aortic Aneurysm/etiology/*prevention & control ; *Disease Models, Animal ; Elastic Tissue/pathology ; Female ; Losartan/administration & dosage/*therapeutic use ; Lung/pathology ; Lung Diseases/drug therapy/pathology ; Marfan Syndrome/complications/*drug therapy/metabolism/pathology ; Mice ; Microfilament Proteins/genetics ; Mutation ; Neutralization Tests ; Pregnancy ; Pregnancy Complications/drug therapy ; Propranolol/administration & dosage/therapeutic use ; Pulmonary Alveoli/pathology ; Receptor, Angiotensin, Type 1/metabolism ; Signal Transduction ; Transforming Growth Factor beta/antagonists & inhibitors/immunology/*metabolism
    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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  • 3
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    MC1R germline variants confer risk for BRAF-mutant melanoma (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-07-01
    Description: Germline variants in MC1R, the gene encoding the melanocortin-1 receptor, and sun exposure increase risk for melanoma in Caucasians. The majority of melanomas that occur on skin with little evidence of chronic sun-induced damage (non-CSD melanoma) have mutations in the BRAF oncogene, whereas in melanomas on skin with marked CSD (CSD melanoma) these mutations are less frequent. In two independent Caucasian populations, we show that MC1R variants are strongly associated with BRAF mutations in non-CSD melanomas. In this tumor subtype, the risk for melanoma associated with MC1R is due to an increase in risk of developing melanomas with BRAF mutations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Landi, Maria Teresa -- Bauer, Jurgen -- Pfeiffer, Ruth M -- Elder, David E -- Hulley, Benjamin -- Minghetti, Paola -- Calista, Donato -- Kanetsky, Peter A -- Pinkel, Daniel -- Bastian, Boris C -- K07 CA80700/CA/NCI NIH HHS/ -- P01 CA025874-25-A1/CA/NCI NIH HHS/ -- R01 CA5558/CA/NCI NIH HHS/ -- R01 CA94963/CA/NCI NIH HHS/ -- R33 CA95300/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2006 Jul 28;313(5786):521-2. Epub 2006 Jun 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, MD 20892, USA. landim@mail.nih.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16809487" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Aged ; Alleles ; Case-Control Studies ; Female ; Genetic Predisposition to Disease ; Genetic Variation ; *Germ-Line Mutation ; Humans ; Italy ; Male ; Melanoma/classification/*genetics/pathology ; Middle Aged ; Mutation ; Odds Ratio ; Proto-Oncogene Proteins B-raf/*genetics ; Receptor, Melanocortin, Type 1/*genetics ; Skin/pathology/*radiation effects ; Skin Neoplasms/classification/*genetics/pathology ; Sunlight/*adverse effects ; United States
    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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  • 4
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    Genome-wide detection of polymorphisms at nucleotide resolution with a single DNA microarray (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-03-11
    Description: A central challenge of genomics is to detect, simply and inexpensively, all differences in sequence among the genomes of individual members of a species. We devised a system to detect all single-nucleotide differences between genomes with the use of data from a single hybridization to a whole-genome DNA microarray. This allowed us to detect a variety of spontaneous single-base pair substitutions, insertions, and deletions, and most (〉90%) of the approximately 30,000 known single-nucleotide polymorphisms between two Saccharomyces cerevisiae strains. We applied this approach to elucidate the genetic basis of phenotypic variants and to identify the small number of single-base pair changes accumulated during experimental evolution of yeast.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gresham, David -- Ruderfer, Douglas M -- Pratt, Stephen C -- Schacherer, Joseph -- Dunham, Maitreya J -- Botstein, David -- Kruglyak, Leonid -- P50 GM071508/GM/NIGMS NIH HHS/ -- R01 GM046406/GM/NIGMS NIH HHS/ -- R37 MH059520/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2006 Mar 31;311(5769):1932-6. Epub 2006 Mar 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA. dgresham@genomics.princeton.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16527929" target="_blank"〉PubMed〈/a〉
    Keywords: Directed Molecular Evolution ; Genes, Fungal ; *Genome, Fungal ; Genomics ; Mutation ; Nucleic Acid Hybridization ; *Oligonucleotide Array Sequence Analysis ; Phenotype ; Point Mutation ; *Polymorphism, Single Nucleotide ; Saccharomyces cerevisiae/*genetics/physiology ; Sequence Deletion ; Suppression, Genetic
    Print ISSN: 0036-8075
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  • 5
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    An inhibitor of FtsZ with potent and selective anti-staphylococcal activity (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-09-20
    Description: FtsZ is an essential bacterial guanosine triphosphatase and homolog of mammalian beta-tubulin that polymerizes and assembles into a ring to initiate cell division. We have created a class of small synthetic antibacterials, exemplified by PC190723, which inhibits FtsZ and prevents cell division. PC190723 has potent and selective in vitro bactericidal activity against staphylococci, including methicillin- and multi-drug-resistant Staphylococcus aureus. The putative inhibitor-binding site of PC190723 was mapped to a region of FtsZ that is analogous to the Taxol-binding site of tubulin. PC190723 was efficacious in an in vivo model of infection, curing mice infected with a lethal dose of S. aureus. The data validate FtsZ as a target for antibacterial intervention and identify PC190723 as suitable for optimization into a new anti-staphylococcal therapy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Haydon, David J -- Stokes, Neil R -- Ure, Rebecca -- Galbraith, Greta -- Bennett, James M -- Brown, David R -- Baker, Patrick J -- Barynin, Vladimir V -- Rice, David W -- Sedelnikova, Sveta E -- Heal, Jonathan R -- Sheridan, Joseph M -- Aiwale, Sachin T -- Chauhan, Pramod K -- Srivastava, Anil -- Taneja, Amit -- Collins, Ian -- Errington, Jeff -- Czaplewski, Lloyd G -- Biotechnology and Biological Sciences Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2008 Sep 19;321(5896):1673-5. doi: 10.1126/science.1159961.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Prolysis, Begbroke Science Park, Oxfordshire OX5 1PF, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18801997" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Anti-Bacterial Agents/*pharmacology/therapeutic use ; Bacillus subtilis/chemistry/*drug effects/genetics ; Bacterial Proteins/*antagonists & inhibitors/chemistry/genetics/metabolism ; Binding Sites ; Cell Division/drug effects ; Crystallography, X-Ray ; Cytoskeletal Proteins/*antagonists & inhibitors/chemistry/genetics/metabolism ; Drug Resistance, Bacterial/genetics ; Drug Resistance, Multiple, Bacterial ; Ligands ; Methicillin Resistance ; Mice ; Microbial Sensitivity Tests ; Models, Molecular ; Molecular Sequence Data ; Mutation ; Protein Conformation ; Pyridines/chemistry/metabolism/*pharmacology/therapeutic use ; Staphylococcal Infections/*drug therapy ; Staphylococcus aureus/chemistry/*drug effects ; Thiazoles/chemistry/metabolism/*pharmacology/therapeutic use ; Tubulin/chemistry/metabolism
    Print ISSN: 0036-8075
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  • 6
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    Sequencing and analysis of Neanderthal genomic DNA (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-11-18
    Description: Our knowledge of Neanderthals is based on a limited number of remains and artifacts from which we must make inferences about their biology, behavior, and relationship to ourselves. Here, we describe the characterization of these extinct hominids from a new perspective, based on the development of a Neanderthal metagenomic library and its high-throughput sequencing and analysis. Several lines of evidence indicate that the 65,250 base pairs of hominid sequence so far identified in the library are of Neanderthal origin, the strongest being the ascertainment of sequence identities between Neanderthal and chimpanzee at sites where the human genomic sequence is different. These results enabled us to calculate the human-Neanderthal divergence time based on multiple randomly distributed autosomal loci. Our analyses suggest that on average the Neanderthal genomic sequence we obtained and the reference human genome sequence share a most recent common ancestor approximately 706,000 years ago, and that the human and Neanderthal ancestral populations split approximately 370,000 years ago, before the emergence of anatomically modern humans. Our finding that the Neanderthal and human genomes are at least 99.5% identical led us to develop and successfully implement a targeted method for recovering specific ancient DNA sequences from metagenomic libraries. This initial analysis of the Neanderthal genome advances our understanding of the evolutionary relationship of Homo sapiens and Homo neanderthalensis and signifies the dawn of Neanderthal genomics.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2583069/" 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/PMC2583069/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Noonan, James P -- Coop, Graham -- Kudaravalli, Sridhar -- Smith, Doug -- Krause, Johannes -- Alessi, Joe -- Chen, Feng -- Platt, Darren -- Paabo, Svante -- Pritchard, Jonathan K -- Rubin, Edward M -- 1-F32-GM074367/GM/NIGMS NIH HHS/ -- HL066681/HL/NHLBI NIH HHS/ -- R01 HG002772/HG/NHGRI NIH HHS/ -- R01 HG002772-01/HG/NHGRI NIH HHS/ -- R01 HG002772-1/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2006 Nov 17;314(5802):1113-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉U.S. Department of Energy Joint Genome Institute, 2800 Mitchell Drive, Walnut Creek, CA 94598, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17110569" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Bone and Bones ; Cell Nucleus ; DNA/*genetics/isolation & purification ; DNA, Mitochondrial ; *Fossils ; Gene Pool ; Genome ; Genome, Human ; Genomic Library ; History, Ancient ; Hominidae/*genetics ; Humans ; Male ; Molecular Sequence Data ; Pan troglodytes/genetics ; Polymerase Chain Reaction ; Sequence Alignment ; *Sequence Analysis, DNA/methods ; Time
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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  • 7
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    An architectural framework that may lie at the core of the postsynaptic density (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-01-28
    Description: The postsynaptic density (PSD) is a complex assembly of proteins associated with the postsynaptic membrane that organizes neurotransmitter receptors, signaling pathways, and regulatory elements within a cytoskeletal matrix. Here we show that the sterile alpha motif domain of rat Shank3/ProSAP2, a master scaffolding protein located deep within the PSD, can form large sheets composed of helical fibers stacked side by side. Zn2+, which is found in high concentrations in the PSD, binds tightly to Shank3 and may regulate assembly. Sheets of the Shank protein could form a platform for the construction of the PSD complex.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baron, Marisa K -- Boeckers, Tobias M -- Vaida, Bianca -- Faham, Salem -- Gingery, Mari -- Sawaya, Michael R -- Salyer, Danielle -- Gundelfinger, Eckart D -- Bowie, James U -- R01 CA081000/CA/NCI NIH HHS/ -- R01 GM063919/GM/NIGMS NIH HHS/ -- R01 GM063919-07/GM/NIGMS NIH HHS/ -- R01 GM063919-08/GM/NIGMS NIH HHS/ -- R01 GM075922/GM/NIGMS NIH HHS/ -- R01 GM075922-04/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2006 Jan 27;311(5760):531-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry and Biochemistry, Molecular Biology Institute, University of California, Los Angeles, 611 Charles E. Young Drive East, Los Angeles, CA 90095-1570, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16439662" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing/analysis/*chemistry/genetics/metabolism ; Animals ; Binding Sites ; Crystallization ; Crystallography, X-Ray ; Hippocampus/chemistry ; Microscopy, Electron ; Models, Molecular ; Mutation ; Nerve Tissue Proteins ; Neurons/chemistry ; Protein Conformation ; Protein Folding ; Protein Structure, Quaternary ; Protein Structure, Tertiary ; Protein Subunits/chemistry ; Rats ; Recombinant Fusion Proteins/analysis ; Solubility ; Synapses/*chemistry ; Zinc/metabolism
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    Deeply inverted electron-hole recombination in a luminescent antibody-stilbene complex (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-03-01
    Description: The blue-emissive antibody EP2-19G2 that has been elicited against trans-stilbene has unprecedented ability to produce bright luminescence and has been used as a biosensor in various applications. We show that the prolonged luminescence is not stilbene fluorescence. Instead, the emissive species is a charge-transfer excited complex of an anionic stilbene and a cationic, parallel pi-stacked tryptophan. Upon charge recombination, this complex generates exceptionally bright blue light. Complex formation is enabled by a deeply penetrating ligand-binding pocket, which in turn results from a noncanonical interface between the two variable domains of the antibody.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Debler, Erik W -- Kaufmann, Gunnar F -- Meijler, Michael M -- Heine, Andreas -- Mee, Jenny M -- Pljevaljcic, Goran -- Di Bilio, Angel J -- Schultz, Peter G -- Millar, David P -- Janda, Kim D -- Wilson, Ian A -- Gray, Harry B -- Lerner, Richard A -- DK19038/DK/NIDDK NIH HHS/ -- GM38273/GM/NIGMS NIH HHS/ -- GM56528/GM/NIGMS NIH HHS/ -- R01 GM038273/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2008 Feb 29;319(5867):1232-5. doi: 10.1126/science.1153445.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Scripps Research Institute, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18309081" target="_blank"〉PubMed〈/a〉
    Keywords: Antibodies, Monoclonal/*chemistry/genetics/immunology ; Antigen-Antibody Complex ; Binding Sites, Antibody ; Crystallization ; Crystallography, X-Ray ; *Electrons ; Fluorescence ; Fluorescence Polarization ; Haptens/chemistry/immunology ; Hydrophobic and Hydrophilic Interactions ; Immunoglobulin Variable Region/*chemistry/immunology ; Ligands ; Luminescence ; Mutation ; Oxidation-Reduction ; Protein Structure, Tertiary ; Spectrometry, Fluorescence ; Spectrum Analysis ; Stilbenes/*chemistry/immunology ; Tryptophan/chemistry
    Print ISSN: 0036-8075
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  • 9
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    Ceramide biogenesis is required for radiation-induced apoptosis in the germ line of C. elegans (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-10-04
    Description: Ceramide engagement in apoptotic pathways has been a topic of controversy. To address this controversy, we tested loss-of-function (lf) mutants of conserved genes of sphingolipid metabolism in Caenorhabditis elegans. Although somatic (developmental) apoptosis was unaffected, ionizing radiation-induced apoptosis of germ cells was obliterated upon inactivation of ceramide synthase and restored upon microinjection of long-chain natural ceramide. Radiation-induced increase in the concentration of ceramide localized to mitochondria and was required for BH3-domain protein EGL-1-mediated displacement of CED-4 (an APAF-1-like protein) from the CED-9 (a Bcl-2 family member)/CED-4 complex, an obligate step in activation of the CED-3 caspase. These studies define CEP-1 (the worm homolog of the tumor suppressor p53)-mediated accumulation of EGL-1 and ceramide synthase-mediated generation of ceramide through parallel pathways that integrate at mitochondrial membranes to regulate stress-induced apoptosis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2585063/" 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/PMC2585063/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Deng, Xinzhu -- Yin, Xianglei -- Allan, Richard -- Lu, Diane D -- Maurer, Carine W -- Haimovitz-Friedman, Adriana -- Fuks, Zvi -- Shaham, Shai -- Kolesnick, Richard -- 2R01HD42680-06/HD/NICHD NIH HHS/ -- CA105125-03/CA/NCI NIH HHS/ -- CA85704/CA/NCI NIH HHS/ -- R01 CA085704/CA/NCI NIH HHS/ -- R01 CA085704-09/CA/NCI NIH HHS/ -- R01 HD042680/HD/NICHD NIH HHS/ -- R01 HD042680-07/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 2008 Oct 3;322(5898):110-5. doi: 10.1126/science.1158111.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Signal Transduction, Memorial Sloan-Kettering Cancer Center (MSKCC), New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18832646" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis ; Caenorhabditis elegans/*cytology/genetics/*metabolism/physiology ; Caenorhabditis elegans Proteins/genetics/*metabolism ; Calcium-Binding Proteins/genetics/metabolism ; Ceramides/biosynthesis/*metabolism/pharmacology ; Genes, Helminth ; Germ Cells/*cytology/metabolism/radiation effects ; Mitochondria/metabolism ; Mitochondrial Membranes/metabolism ; Mutation ; Nuclear Envelope/metabolism ; Oxidoreductases/genetics/metabolism ; Proto-Oncogene Proteins c-abl/genetics/metabolism ; Proto-Oncogene Proteins c-bcl-2/metabolism ; *Radiation, Ionizing ; Repressor Proteins/metabolism ; Tumor Suppressor Protein p53/metabolism
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    Avian paternal care had dinosaur origin (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-12-20
    Description: The repeated discovery of adult dinosaurs in close association with egg clutches leads to speculation over the type and extent of care exhibited by these extinct animals for their eggs and young. To assess parental care in Cretaceous troodontid and oviraptorid dinosaurs, we examined clutch volume and the bone histology of brooding adults. In comparison to four archosaur care regressions, the relatively large clutch volumes of Troodon, Oviraptor, and Citipati scale most closely with a bird-paternal care model. Clutch-associated adults lack the maternal and reproductively associated histologic features common to extant archosaurs. Large clutch volumes and a suite of reproductive features shared only with birds favor paternal care, possibly within a polygamous mating system. Paternal care in both troodontids and oviraptorids indicates that this care system evolved before the emergence of birds and represents birds' ancestral condition. In extant birds and over most adult sizes, paternal and biparental care correspond to the largest and smallest relative clutch volumes, respectively.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Varricchio, David J -- Moore, Jason R -- Erickson, Gregory M -- Norell, Mark A -- Jackson, Frankie D -- Borkowski, John J -- New York, N.Y. -- Science. 2008 Dec 19;322(5909):1826-8. doi: 10.1126/science.1163245.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Earth Sciences, Montana State University, Bozeman, MT 59717, USA. djv@montana.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19095938" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Behavior, Animal ; *Biological Evolution ; *Birds/physiology ; Bone and Bones/anatomy & histology ; Clutch Size ; *Dinosaurs/physiology ; Female ; *Fossils ; Male ; Maternal Behavior ; *Nesting Behavior ; Paternal Behavior ; Regression Analysis ; *Sexual Behavior, Animal
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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