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  • Molecular Sequence Data  (14)
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  • 1
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    The Selaginella genome identifies genetic changes associated with the evolution of vascular plants (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-05-10
    Description: Vascular plants appeared ~410 million years ago, then diverged into several lineages of which only two survive: the euphyllophytes (ferns and seed plants) and the lycophytes. We report here the genome sequence of the lycophyte Selaginella moellendorffii (Selaginella), the first nonseed vascular plant genome reported. By comparing gene content in evolutionarily diverse taxa, we found that the transition from a gametophyte- to a sporophyte-dominated life cycle required far fewer new genes than the transition from a nonseed vascular to a flowering plant, whereas secondary metabolic genes expanded extensively and in parallel in the lycophyte and angiosperm lineages. Selaginella differs in posttranscriptional gene regulation, including small RNA regulation of repetitive elements, an absence of the trans-acting small interfering RNA pathway, and extensive RNA editing of organellar genes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3166216/" 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/PMC3166216/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Banks, Jo Ann -- Nishiyama, Tomoaki -- Hasebe, Mitsuyasu -- Bowman, John L -- Gribskov, Michael -- dePamphilis, Claude -- Albert, Victor A -- Aono, Naoki -- Aoyama, Tsuyoshi -- Ambrose, Barbara A -- Ashton, Neil W -- Axtell, Michael J -- Barker, Elizabeth -- Barker, Michael S -- Bennetzen, Jeffrey L -- Bonawitz, Nicholas D -- Chapple, Clint -- Cheng, Chaoyang -- Correa, Luiz Gustavo Guedes -- Dacre, Michael -- DeBarry, Jeremy -- Dreyer, Ingo -- Elias, Marek -- Engstrom, Eric M -- Estelle, Mark -- Feng, Liang -- Finet, Cedric -- Floyd, Sandra K -- Frommer, Wolf B -- Fujita, Tomomichi -- Gramzow, Lydia -- Gutensohn, Michael -- Harholt, Jesper -- Hattori, Mitsuru -- Heyl, Alexander -- Hirai, Tadayoshi -- Hiwatashi, Yuji -- Ishikawa, Masaki -- Iwata, Mineko -- Karol, Kenneth G -- Koehler, Barbara -- Kolukisaoglu, Uener -- Kubo, Minoru -- Kurata, Tetsuya -- Lalonde, Sylvie -- Li, Kejie -- Li, Ying -- Litt, Amy -- Lyons, Eric -- Manning, Gerard -- Maruyama, Takeshi -- Michael, Todd P -- Mikami, Koji -- Miyazaki, Saori -- Morinaga, Shin-ichi -- Murata, Takashi -- Mueller-Roeber, Bernd -- Nelson, David R -- Obara, Mari -- Oguri, Yasuko -- Olmstead, Richard G -- Onodera, Naoko -- Petersen, Bent Larsen -- Pils, Birgit -- Prigge, Michael -- Rensing, Stefan A -- Riano-Pachon, Diego Mauricio -- Roberts, Alison W -- Sato, Yoshikatsu -- Scheller, Henrik Vibe -- Schulz, Burkhard -- Schulz, Christian -- Shakirov, Eugene V -- Shibagaki, Nakako -- Shinohara, Naoki -- Shippen, Dorothy E -- Sorensen, Iben -- Sotooka, Ryo -- Sugimoto, Nagisa -- Sugita, Mamoru -- Sumikawa, Naomi -- Tanurdzic, Milos -- Theissen, Gunter -- Ulvskov, Peter -- Wakazuki, Sachiko -- Weng, Jing-Ke -- Willats, William W G T -- Wipf, Daniel -- Wolf, Paul G -- Yang, Lixing -- Zimmer, Andreas D -- Zhu, Qihui -- Mitros, Therese -- Hellsten, Uffe -- Loque, Dominique -- Otillar, Robert -- Salamov, Asaf -- Schmutz, Jeremy -- Shapiro, Harris -- Lindquist, Erika -- Lucas, Susan -- Rokhsar, Daniel -- Grigoriev, Igor V -- GM065383/GM/NIGMS NIH HHS/ -- GM84051/GM/NIGMS NIH HHS/ -- HG004164/HG/NHGRI NIH HHS/ -- R01 GM043644/GM/NIGMS NIH HHS/ -- R01 GM084051/GM/NIGMS NIH HHS/ -- R01 GM084051-01A1/GM/NIGMS NIH HHS/ -- R01 HG004164/HG/NHGRI NIH HHS/ -- R01 HG004164-02/HG/NHGRI NIH HHS/ -- R01 HG004164-03/HG/NHGRI NIH HHS/ -- R01 HG004164-04/HG/NHGRI NIH HHS/ -- T32 GM007757/GM/NIGMS NIH HHS/ -- T32-HG00035/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2011 May 20;332(6032):960-3. doi: 10.1126/science.1203810. Epub 2011 May 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, USA. banksj@purdue.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21551031" target="_blank"〉PubMed〈/a〉
    Keywords: Angiosperms/chemistry/genetics ; *Biological Evolution ; Bryopsida/genetics ; Chlamydomonas/chemistry/genetics ; DNA Transposable Elements ; Evolution, Molecular ; Gene Expression Regulation, Plant ; Genes, Plant ; *Genome, Plant ; MicroRNAs/genetics ; Molecular Sequence Data ; Phylogeny ; Plant Proteins/genetics/metabolism ; Proteome/analysis ; RNA Editing ; RNA, Plant/genetics ; Repetitive Sequences, Nucleic Acid ; Selaginellaceae/*genetics/growth & development/metabolism ; Sequence Analysis, DNA
    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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    Dense populations of a giant sulfur bacterium in Namibian shelf sediments (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-04-16
    Description: A previously unknown giant sulfur bacterium is abundant in sediments underlying the oxygen minimum zone of the Benguela Current upwelling system. The bacterium has a spherical cell that exceeds by up to 100-fold the biovolume of the largest known prokaryotes. On the basis of 16S ribosomal DNA sequence data, these bacteria are closely related to the marine filamentous sulfur bacteria Thioploca, abundant in the upwelling area off Chile and Peru. Similar to Thioploca, the giant bacteria oxidize sulfide with nitrate that is accumulated to 〈/=800 millimolar in a central vacuole.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schulz, H N -- Brinkhoff, T -- Ferdelman, T G -- Marine, M H -- Teske, A -- Jorgensen, B B -- New York, N.Y. -- Science. 1999 Apr 16;284(5413):493-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max Planck Institute for Marine Microbiology, Celsiusstrasse, D-28359 Bremen, Germany. hschulz@mpi-bremen.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10205058" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteria/classification/cytology/*isolation & purification/*metabolism ; Cytoplasm/ultrastructure ; Genes, rRNA ; Geologic Sediments/*microbiology ; Microscopy, Electron ; Molecular Sequence Data ; Namibia ; Nitrates/analysis/*metabolism ; Oxidation-Reduction ; Phylogeny ; RNA, Bacterial/genetics ; RNA, Ribosomal, 16S/genetics ; Sulfides/*metabolism ; Sulfur/*analysis/metabolism ; Terminology as Topic ; Vacuoles/chemistry/ultrastructure
    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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    Macromolecular trafficking indicated by localization and turnover of sucrose transporters in enucleate sieve elements (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-02-28
    Description: The leaf sucrose transporter SUT1 is essential for phloem loading and long-distance transport of assimilates. Both SUT1 messenger RNA (mRNA) and protein were shown to be diurnally regulated and to have high turnover rates. SUT1 protein was detected by immunolocalization in plasma membranes of enucleate sieve elements (SEs) in tobacco, potato, and tomato. Analysis by in situ hybridization showed that SUT1 mRNA localizes mainly to the SE and is preferentially associated with plasmodesmata. Antisense inhibition of SUT1 expression under control of a companion cell (CC)-specific promoter indicated synthesis of SUT1 mRNA in the CC. These results provide evidence for targeting of plant endogenous mRNA and potentially SUT1 protein through phloem plasmodesmata and for sucrose loading at the plasma membrane of SE.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kuhn, C -- Franceschi, V R -- Schulz, A -- Lemoine, R -- Frommer, W B -- New York, N.Y. -- Science. 1997 Feb 28;275(5304):1298-300.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut fur Botanik, Eberhard-Karls-Universitat, Auf der Morgenstelle 1, D-72076 Tubingen, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9036853" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Biological Transport, Active ; Carrier Proteins/analysis/genetics/*metabolism ; Cell Membrane/chemistry/metabolism ; Fluorescent Antibody Technique ; Immunohistochemistry ; In Situ Hybridization ; Lycopersicon esculentum/metabolism ; Membrane Proteins/analysis/genetics/*metabolism ; *Membrane Transport Proteins ; Molecular Sequence Data ; Plant Leaves/chemistry/cytology/*metabolism ; Plant Proteins/analysis/genetics/*metabolism ; Plants, Toxic ; RNA, Messenger/analysis/genetics/metabolism ; RNA, Plant/analysis/genetics/metabolism ; Solanum tuberosum ; Sucrose/metabolism ; Tobacco/metabolism ; Transcription, Genetic
    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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    Ability of the c-mos product to associate with and phosphorylate tubulin (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-02-08
    Description: The mos proto-oncogene product, pp39mos, is a protein kinase and has been equated with cytostatic factor (CSF), an activity in unfertilized eggs that is thought to be responsible for the arrest of meiosis at metaphase II. The biochemical properties and potential substrates of pp39mos were examined in unfertilized eggs and in transformed cells in order to study how the protein functions both as CSF and in transformation. The pp39mos protein associated with polymers under conditions that favor tubulin oligomerization and was present in an approximately 500-kilodalton "core" complex under conditions that favor depolymerization. beta-Tubulin was preferentially coprecipitated in pp39mos immunoprecipitates and was the major phosphorylated product in a pp39mos-dependent immune complex kinase assay. Immunofluorescence analysis of NIH 3T3 cells transformed with Xenopus c-mos showed that pp39mos colocalizes with tubulin in the spindle during metaphase and in the midbody and asters during telophase. Disruption of microtubules with nocodazole affected tubulin and pp39mos organization in the same way. It therefore appears that pp39mos is a tubulin-associated protein kinase and may thus participate in the modification of microtubules and contribute to the formation of the spindle. This activity expressed during interphase in somatic cells may be responsible for the transforming activity of pp39mos.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhou, R P -- Oskarsson, M -- Paules, R S -- Schulz, N -- Cleveland, D -- Vande Woude, G F -- N01-CO-74101/CO/NCI NIH HHS/ -- New York, N.Y. -- Science. 1991 Feb 8;251(4994):671-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉ABL-Basic Research Program, NCI-Frederick Cancer Research and Development Center, MD 21702.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1825142" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibodies, Monoclonal ; Cell Line ; Cell Transformation, Neoplastic/metabolism ; Macromolecular Substances ; Mice ; Mice, Inbred BALB C ; Molecular Sequence Data ; Phosphoproteins/metabolism ; Precipitin Tests ; Protein Binding ; Protein-Tyrosine Kinases/*metabolism ; Proto-Oncogene Proteins/*metabolism ; Proto-Oncogene Proteins c-mos ; Tubulin/*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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  • 5
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    Structure and function of a squalene cyclase (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-09-20
    Description: The crystal structure of squalene-hopene cyclase from Alicyclobacillus acidocaldarius was determined at 2.9 angstrom resolution. The mechanism and sequence of this cyclase are closely related to those of 2,3-oxidosqualene cyclases that catalyze the cyclization step in cholesterol biosynthesis. The structure reveals a membrane protein with membrane-binding characteristics similar to those of prostaglandin-H2 synthase, the only other reported protein of this type. The active site of the enzyme is located in a large central cavity that is of suitable size to bind squalene in its required conformation and that is lined by aromatic residues. The structure supports a mechanism in which the acid starting the reaction by protonating a carbon-carbon double bond is an aspartate that is coupled to a histidine. Numerous surface alpha helices are connected by characteristic QW-motifs (Q is glutamine and W is tryptophan) that tighten the protein structure, possibly for absorbing the reaction energy without structural damage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wendt, K U -- Poralla, K -- Schulz, G E -- New York, N.Y. -- Science. 1997 Sep 19;277(5333):1811-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut fur Organische Chemie und Biochemie, Albertstrasse 21, D-79104 Freiburg im Breisgau, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9295270" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Bacillaceae/*enzymology ; Binding Sites ; Cell Membrane/enzymology ; Crystallization ; Crystallography, X-Ray ; Cyclization ; Dimerization ; Humans ; Hydrogen Bonding ; *Intramolecular Transferases ; Isomerases/*chemistry/metabolism ; Models, Molecular ; Molecular Sequence Data ; *Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Recombinant Proteins/chemistry/metabolism ; Sequence Alignment ; Squalene/metabolism ; Thermodynamics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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  • 6
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    The structure of a mycobacterial outer-membrane channel (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-02-21
    Description: Mycobacteria have low-permeability outer membranes that render them resistant to most antibiotics. Hydrophilic nutrients can enter by way of transmembrane-channel proteins called porins. An x-ray analysis of the main porin from Mycobacterium smegmatis, MspA, revealed a homooctameric goblet-like conformation with a single central channel. This is the first structure of a mycobacterial outer-membrane protein. No structure-related protein was found in the Protein Data Bank. MspA contains two consecutive beta barrels with nonpolar outer surfaces that form a ribbon around the porin, which is too narrow to fit the thickness of the mycobacterial outer membrane in contemporary models.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Faller, Michael -- Niederweis, Michael -- Schulz, Georg E -- New York, N.Y. -- Science. 2004 Feb 20;303(5661):1189-92.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut fur Organische Chemie und Biochemie, Albert-Ludwigs-Universitat, Albertstrasse 21, 79104 Freiburg im Breisgau, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14976314" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Arginine/chemistry ; Cell Membrane Permeability ; Cloning, Molecular ; Crystallization ; Crystallography, X-Ray ; Electric Conductivity ; Escherichia coli/genetics ; Hydrogen Bonding ; Hydrophobic and Hydrophilic Interactions ; Models, Molecular ; Molecular Sequence Data ; Mutation ; Mycobacterium smegmatis/*chemistry/metabolism ; Porins/*chemistry/genetics/metabolism ; Protein Conformation ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Recombinant Proteins/chemistry
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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  • 7
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    The structure of a retinal-forming carotenoid oxygenase (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-04-12
    Description: Enzymes that produce retinal and related apocarotenoids constitute a sequence- and thus structure-related family, a member of which was analyzed by x-ray diffraction. This member is an oxygenase and contains an Fe2+-4-His arrangement at the axis of a seven-bladed beta-propeller chain fold covered by a dome formed by six large loops. The Fe2+ is accessible through a long nonpolar tunnel that holds a carotenoid derivative in one of the crystals. On binding, three consecutive double bonds of this carotenoid changed from a straight all-trans to a cranked cis-trans-cis conformation. The remaining trans bond is located at the dioxygen-ligated Fe2+ and cleaved by oxygen.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kloer, Daniel P -- Ruch, Sandra -- Al-Babili, Salim -- Beyer, Peter -- Schulz, Georg E -- R01 EY020551/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 2005 Apr 8;308(5719):267-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut fur Organische Chemie und Biochemie, Albert-Ludwigs-Universitat, Albertstrasse 21, 79104 Freiburg im Breisgau, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15821095" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Cloning, Molecular ; Crystallography, X-Ray ; Escherichia coli ; Humans ; Molecular Sequence Data ; Oxygenases/*chemistry ; Protein Conformation ; Recombinant Proteins ; Retinaldehyde/*chemistry ; Synechocystis/*enzymology/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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  • 8
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    Spatial partitioning of the regulatory landscape of the X-inactivation centre (2012)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2012-04-13
    Description: In eukaryotes transcriptional regulation often involves multiple long-range elements and is influenced by the genomic environment. A prime example of this concerns the mouse X-inactivation centre (Xic), which orchestrates the initiation of X-chromosome inactivation (XCI) by controlling the expression of the non-protein-coding Xist transcript. The extent of Xic sequences required for the proper regulation of Xist remains unknown. Here we use chromosome conformation capture carbon-copy (5C) and super-resolution microscopy to analyse the spatial organization of a 4.5-megabases (Mb) region including Xist. We discover a series of discrete 200-kilobase to 1 Mb topologically associating domains (TADs), present both before and after cell differentiation and on the active and inactive X. TADs align with, but do not rely on, several domain-wide features of the epigenome, such as H3K27me3 or H3K9me2 blocks and lamina-associated domains. TADs also align with coordinately regulated gene clusters. Disruption of a TAD boundary causes ectopic chromosomal contacts and long-range transcriptional misregulation. The Xist/Tsix sense/antisense unit illustrates how TADs enable the spatial segregation of oppositely regulated chromosomal neighbourhoods, with the respective promoters of Xist and Tsix lying in adjacent TADs, each containing their known positive regulators. We identify a novel distal regulatory region of Tsix within its TAD, which produces a long intervening RNA, Linx. In addition to uncovering a new principle of cis-regulatory architecture of mammalian chromosomes, our study sets the stage for the full genetic dissection of the X-inactivation centre.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3555144/" 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/PMC3555144/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nora, Elphege P -- Lajoie, Bryan R -- Schulz, Edda G -- Giorgetti, Luca -- Okamoto, Ikuhiro -- Servant, Nicolas -- Piolot, Tristan -- van Berkum, Nynke L -- Meisig, Johannes -- Sedat, John -- Gribnau, Joost -- Barillot, Emmanuel -- Bluthgen, Nils -- Dekker, Job -- Heard, Edith -- R01 HG003143/HG/NHGRI NIH HHS/ -- England -- Nature. 2012 Apr 11;485(7398):381-5. doi: 10.1038/nature11049.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut Curie, 26 rue d'Ulm, Paris F-75248, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22495304" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation ; DNA, Intergenic/genetics ; Embryonic Stem Cells/cytology/metabolism ; Epigenesis, Genetic ; Epigenomics ; Female ; Fibroblasts ; Gene Expression Regulation ; Histones/metabolism ; In Situ Hybridization, Fluorescence ; Male ; Methylation ; Mice ; Molecular Sequence Data ; Promoter Regions, Genetic/genetics ; RNA, Long Noncoding ; RNA, Untranslated/*genetics ; Transcriptome ; X Chromosome/chemistry/*genetics ; X Chromosome Inactivation/*genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 9
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    The genome of the recently domesticated crop plant sugar beet (Beta vulgaris) (2013)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2013-12-20
    Description: Sugar beet (Beta vulgaris ssp. vulgaris) is an important crop of temperate climates which provides nearly 30% of the world's annual sugar production and is a source for bioethanol and animal feed. The species belongs to the order of Caryophylalles, is diploid with 2n = 18 chromosomes, has an estimated genome size of 714-758 megabases and shares an ancient genome triplication with other eudicot plants. Leafy beets have been cultivated since Roman times, but sugar beet is one of the most recently domesticated crops. It arose in the late eighteenth century when lines accumulating sugar in the storage root were selected from crosses made with chard and fodder beet. Here we present a reference genome sequence for sugar beet as the first non-rosid, non-asterid eudicot genome, advancing comparative genomics and phylogenetic reconstructions. The genome sequence comprises 567 megabases, of which 85% could be assigned to chromosomes. The assembly covers a large proportion of the repetitive sequence content that was estimated to be 63%. We predicted 27,421 protein-coding genes supported by transcript data and annotated them on the basis of sequence homology. Phylogenetic analyses provided evidence for the separation of Caryophyllales before the split of asterids and rosids, and revealed lineage-specific gene family expansions and losses. We sequenced spinach (Spinacia oleracea), another Caryophyllales species, and validated features that separate this clade from rosids and asterids. Intraspecific genomic variation was analysed based on the genome sequences of sea beet (Beta vulgaris ssp. maritima; progenitor of all beet crops) and four additional sugar beet accessions. We identified seven million variant positions in the reference genome, and also large regions of low variability, indicating artificial selection. The sugar beet genome sequence enables the identification of genes affecting agronomically relevant traits, supports molecular breeding and maximizes the plant's potential in energy biotechnology.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dohm, Juliane C -- Minoche, Andre E -- Holtgrawe, Daniela -- Capella-Gutierrez, Salvador -- Zakrzewski, Falk -- Tafer, Hakim -- Rupp, Oliver -- Sorensen, Thomas Rosleff -- Stracke, Ralf -- Reinhardt, Richard -- Goesmann, Alexander -- Kraft, Thomas -- Schulz, Britta -- Stadler, Peter F -- Schmidt, Thomas -- Gabaldon, Toni -- Lehrach, Hans -- Weisshaar, Bernd -- Himmelbauer, Heinz -- England -- Nature. 2014 Jan 23;505(7484):546-9. doi: 10.1038/nature12817. Epub 2013 Dec 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Max Planck Institute for Molecular Genetics, Ihnestrasse 63-73, 14195 Berlin, Germany [2] Centre for Genomic Regulation (CRG), C. Dr. Aiguader 88, 08003 Barcelona, Spain [3] Universitat Pompeu Fabra (UPF), C. Dr. Aiguader 88, 08003 Barcelona, Spain [4]. ; Bielefeld University, CeBiTec and Department of Biology, Universitatsstrasse 25, 33615 Bielefeld, Germany. ; 1] Centre for Genomic Regulation (CRG), C. Dr. Aiguader 88, 08003 Barcelona, Spain [2] Universitat Pompeu Fabra (UPF), C. Dr. Aiguader 88, 08003 Barcelona, Spain. ; TU Dresden, Department of Biology, Zellescher Weg 20b, 01217 Dresden, Germany. ; University of Leipzig, Department of Computer Science, Hartelstrasse 16-18, 04107 Leipzig, Germany. ; Max Planck Genome Centre Cologne, Carl-von-Linne-Weg 10, 50829 Koln, Germany. ; Syngenta, Box 302, 26123 Landskrona, Sweden. ; KWS SAAT AG, Grimsehlstrasse 31, 37574 Einbeck, Germany. ; 1] Centre for Genomic Regulation (CRG), C. Dr. Aiguader 88, 08003 Barcelona, Spain [2] Universitat Pompeu Fabra (UPF), C. Dr. Aiguader 88, 08003 Barcelona, Spain [3] Institucio Catalana de Recerca i Estudis Avancats (ICREA), Pg. Lluis Companys 23, 08010 Barcelona, Spain. ; Max Planck Institute for Molecular Genetics, Ihnestrasse 63-73, 14195 Berlin, Germany. ; 1] Max Planck Institute for Molecular Genetics, Ihnestrasse 63-73, 14195 Berlin, Germany [2] Centre for Genomic Regulation (CRG), C. Dr. Aiguader 88, 08003 Barcelona, Spain [3] Universitat Pompeu Fabra (UPF), C. Dr. Aiguader 88, 08003 Barcelona, Spain.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24352233" target="_blank"〉PubMed〈/a〉
    Keywords: Beta vulgaris/*genetics ; Biofuels/supply & distribution ; Carbohydrate Metabolism ; Chromosomes, Plant/genetics ; Crops, Agricultural/*genetics ; Ethanol/metabolism ; Genome, Plant/*genetics ; Genomics ; In Situ Hybridization, Fluorescence ; Molecular Sequence Data ; Phylogeny ; Sequence Analysis, DNA ; Spinacia oleracea/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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    N-linked glycosylation of folded proteins by the bacterial oligosaccharyltransferase (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-11-18
    Description: N-linked protein glycosylation is found in all domains of life. In eukaryotes, it is the most abundant protein modification of secretory and membrane proteins, and the process is coupled to protein translocation and folding. We found that in bacteria, N-glycosylation can occur independently of the protein translocation machinery. In an in vitro assay, bacterial oligosaccharyltransferase glycosylated a folded endogenous substrate protein with high efficiency and folded bovine ribonuclease A with low efficiency. Unfolding the eukaryotic substrate greatly increased glycosylation. We propose that in the bacterial system, glycosylation sites are located in flexible parts of folded proteins, whereas the eukaryotic cotranslational glycosylation evolved to a mechanism presenting the substrate in a flexible form before folding.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kowarik, Michael -- Numao, Shin -- Feldman, Mario F -- Schulz, Benjamin L -- Callewaert, Nico -- Kiermaier, Eva -- Catrein, Ina -- Aebi, Markus -- New York, N.Y. -- Science. 2006 Nov 17;314(5802):1148-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Microbiology, Department of Biology, Eidgenossische Technische Hochschule (ETH) Zurich, 8093 Zurich, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17110579" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Bacterial Proteins/*metabolism ; Campylobacter jejuni ; Cattle ; Escherichia coli ; Glycoproteins/*metabolism ; Glycosylation ; Hexosyltransferases/metabolism ; Membrane Proteins/metabolism ; Molecular Sequence Data ; *Protein Folding ; Protein Transport ; Recombinant Proteins/metabolism
    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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