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  • Signal Transduction  (4)
  • Sequence Analysis, DNA  (3)
  • Phylogeny
  • American Association for the Advancement of Science (AAAS)  (6)
  • Nature Publishing Group (NPG)  (1)
  • 2005-2009  (7)
Collection
Publisher
  • American Association for the Advancement of Science (AAAS)  (6)
  • Nature Publishing Group (NPG)  (1)
Years
Year
  • 1
    Publication Date: 2009-02-17
    Description: Injury or impaired clearance of apoptotic cells leads to the pathological accumulation of necrotic corpses, which induce an inflammatory response that initiates tissue repair. In addition, antigens present in necrotic cells can sometimes provoke a specific immune response and it has been argued that necrosis could explain adaptive immunity in seemingly infection-free situations, such as after allograft transplantation or in spontaneous and therapy-induced tumour rejection. In the mouse, the CD8alpha+ subset of dendritic cells phagocytoses dead cell remnants and cross-primes CD8+ T cells against cell-associated antigens. Here we show that CD8alpha+ dendritic cells use CLEC9A (also known as DNGR-1), a recently-characterized C-type lectin, to recognize a preformed signal that is exposed on necrotic cells. Loss or blockade of CLEC9A does not impair the uptake of necrotic cell material by CD8+ dendritic cells, but specifically reduces cross-presentation of dead-cell-associated antigens in vitro and decreases the immunogenicity of necrotic cells in vivo. The function of CLEC9A requires a key tyrosine residue in its intracellular tail that allows the recruitment and activation of the tyrosine kinase SYK, which is also essential for cross-presentation of dead-cell-associated antigens. Thus, CLEC9A functions as a SYK-coupled C-type lectin receptor to mediate sensing of necrosis by the principal dendritic-cell subset involved in regulating cross-priming to cell-associated antigens.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2671489/" 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/PMC2671489/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sancho, David -- Joffre, Olivier P -- Keller, Anna M -- Rogers, Neil C -- Martinez, Dolores -- Hernanz-Falcon, Patricia -- Rosewell, Ian -- Reis e Sousa, Caetano -- A3598/Cancer Research UK/United Kingdom -- Cancer Research UK/United Kingdom -- England -- Nature. 2009 Apr 16;458(7240):899-903. doi: 10.1038/nature07750.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Immunobiology Laboratory, London Research Institute, Lincoln's Inn Fields Laboratories, 44 Lincoln's Inn Fields, London WC2A 3PX, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19219027" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD8/metabolism ; CD8-Positive T-Lymphocytes/immunology ; Cells, Cultured ; Cross-Priming/immunology ; Dendritic Cells/*immunology/*metabolism ; Humans ; Lectins, C-Type/deficiency/genetics/*metabolism ; Ligands ; Mice ; Necrosis/*immunology/*metabolism ; Phagocytosis ; Receptors, Immunologic/deficiency/genetics/*metabolism ; Receptors, Mitogen/genetics/*metabolism ; Signal Transduction
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2007-10-13
    Description: Chlamydomonas reinhardtii is a unicellular green alga whose lineage diverged from land plants over 1 billion years ago. It is a model system for studying chloroplast-based photosynthesis, as well as the structure, assembly, and function of eukaryotic flagella (cilia), which were inherited from the common ancestor of plants and animals, but lost in land plants. We sequenced the approximately 120-megabase nuclear genome of Chlamydomonas and performed comparative phylogenomic analyses, identifying genes encoding uncharacterized proteins that are likely associated with the function and biogenesis of chloroplasts or eukaryotic flagella. Analyses of the Chlamydomonas genome advance our understanding of the ancestral eukaryotic cell, reveal previously unknown genes associated with photosynthetic and flagellar functions, and establish links between ciliopathy and the composition and function of flagella.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2875087/" 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/PMC2875087/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Merchant, Sabeeha S -- Prochnik, Simon E -- Vallon, Olivier -- Harris, Elizabeth H -- Karpowicz, Steven J -- Witman, George B -- Terry, Astrid -- Salamov, Asaf -- Fritz-Laylin, Lillian K -- Marechal-Drouard, Laurence -- Marshall, Wallace F -- Qu, Liang-Hu -- Nelson, David R -- Sanderfoot, Anton A -- Spalding, Martin H -- Kapitonov, Vladimir V -- Ren, Qinghu -- Ferris, Patrick -- Lindquist, Erika -- Shapiro, Harris -- Lucas, Susan M -- Grimwood, Jane -- Schmutz, Jeremy -- Cardol, Pierre -- Cerutti, Heriberto -- Chanfreau, Guillaume -- Chen, Chun-Long -- Cognat, Valerie -- Croft, Martin T -- Dent, Rachel -- Dutcher, Susan -- Fernandez, Emilio -- Fukuzawa, Hideya -- Gonzalez-Ballester, David -- Gonzalez-Halphen, Diego -- Hallmann, Armin -- Hanikenne, Marc -- Hippler, Michael -- Inwood, William -- Jabbari, Kamel -- Kalanon, Ming -- Kuras, Richard -- Lefebvre, Paul A -- Lemaire, Stephane D -- Lobanov, Alexey V -- Lohr, Martin -- Manuell, Andrea -- Meier, Iris -- Mets, Laurens -- Mittag, Maria -- Mittelmeier, Telsa -- Moroney, James V -- Moseley, Jeffrey -- Napoli, Carolyn -- Nedelcu, Aurora M -- Niyogi, Krishna -- Novoselov, Sergey V -- Paulsen, Ian T -- Pazour, Greg -- Purton, Saul -- Ral, Jean-Philippe -- Riano-Pachon, Diego Mauricio -- Riekhof, Wayne -- Rymarquis, Linda -- Schroda, Michael -- Stern, David -- Umen, James -- Willows, Robert -- Wilson, Nedra -- Zimmer, Sara Lana -- Allmer, Jens -- Balk, Janneke -- Bisova, Katerina -- Chen, Chong-Jian -- Elias, Marek -- Gendler, Karla -- Hauser, Charles -- Lamb, Mary Rose -- Ledford, Heidi -- Long, Joanne C -- Minagawa, Jun -- Page, M Dudley -- Pan, Junmin -- Pootakham, Wirulda -- Roje, Sanja -- Rose, Annkatrin -- Stahlberg, Eric -- Terauchi, Aimee M -- Yang, Pinfen -- Ball, Steven -- Bowler, Chris -- Dieckmann, Carol L -- Gladyshev, Vadim N -- Green, Pamela -- Jorgensen, Richard -- Mayfield, Stephen -- Mueller-Roeber, Bernd -- Rajamani, Sathish -- Sayre, Richard T -- Brokstein, Peter -- Dubchak, Inna -- Goodstein, David -- Hornick, Leila -- Huang, Y Wayne -- Jhaveri, Jinal -- Luo, Yigong -- Martinez, Diego -- Ngau, Wing Chi Abby -- Otillar, Bobby -- Poliakov, Alexander -- Porter, Aaron -- Szajkowski, Lukasz -- Werner, Gregory -- Zhou, Kemin -- Grigoriev, Igor V -- Rokhsar, Daniel S -- Grossman, Arthur R -- GM07185/GM/NIGMS NIH HHS/ -- GM42143/GM/NIGMS NIH HHS/ -- R01 GM032843/GM/NIGMS NIH HHS/ -- R01 GM042143/GM/NIGMS NIH HHS/ -- R01 GM042143-09/GM/NIGMS NIH HHS/ -- R01 GM060992/GM/NIGMS NIH HHS/ -- R01 GM062915-06/GM/NIGMS NIH HHS/ -- R37 GM030626/GM/NIGMS NIH HHS/ -- R37 GM042143/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2007 Oct 12;318(5848):245-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry and Biochemistry, University of California at Los Angeles, Los Angeles, CA 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17932292" target="_blank"〉PubMed〈/a〉
    Keywords: Algal Proteins/*genetics/*physiology ; Animals ; *Biological Evolution ; Chlamydomonas reinhardtii/*genetics/physiology ; Chloroplasts/metabolism ; Computational Biology ; DNA, Algal/genetics ; Flagella/metabolism ; Genes ; *Genome ; Genomics ; Membrane Transport Proteins/genetics/physiology ; Molecular Sequence Data ; Multigene Family ; Photosynthesis/genetics ; Phylogeny ; Plants/genetics ; Proteome ; 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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  • 3
    Publication Date: 2009-12-08
    Description: To understand basic principles of bacterial metabolism organization and regulation, but also the impact of genome size, we systematically studied one of the smallest bacteria, Mycoplasma pneumoniae. A manually curated metabolic network of 189 reactions catalyzed by 129 enzymes allowed the design of a defined, minimal medium with 19 essential nutrients. More than 1300 growth curves were recorded in the presence of various nutrient concentrations. Measurements of biomass indicators, metabolites, and 13C-glucose experiments provided information on directionality, fluxes, and energetics; integration with transcription profiling enabled the global analysis of metabolic regulation. Compared with more complex bacteria, the M. pneumoniae metabolic network has a more linear topology and contains a higher fraction of multifunctional enzymes; general features such as metabolite concentrations, cellular energetics, adaptability, and global gene expression responses are similar, however.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yus, Eva -- Maier, Tobias -- Michalodimitrakis, Konstantinos -- van Noort, Vera -- Yamada, Takuji -- Chen, Wei-Hua -- Wodke, Judith A H -- Guell, Marc -- Martinez, Sira -- Bourgeois, Ronan -- Kuhner, Sebastian -- Raineri, Emanuele -- Letunic, Ivica -- Kalinina, Olga V -- Rode, Michaela -- Herrmann, Richard -- Gutierrez-Gallego, Ricardo -- Russell, Robert B -- Gavin, Anne-Claude -- Bork, Peer -- Serrano, Luis -- New York, N.Y. -- Science. 2009 Nov 27;326(5957):1263-8. doi: 10.1126/science.1177263.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Genomic Regulation (CRG) and Universitat Pompeu Fabra, Avenida Dr. Aiguader 88, 08003 Barcelona, Spain.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965476" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Bacterial Proteins/*metabolism ; Culture Media ; Energy Metabolism ; Enzymes/genetics/metabolism ; Gene Expression Profiling ; *Gene Expression Regulation, Bacterial ; *Genome, Bacterial ; Glycolysis ; *Metabolic Networks and Pathways ; Mycoplasma pneumoniae/*genetics/growth & development/*metabolism ; RNA, Bacterial/genetics/metabolism ; Signal Transduction ; Systems Biology ; Transcription, Genetic ; rRNA Operon
    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
    Publication Date: 2009-12-08
    Description: Maize domestication (Zea mays ssp. mays L.) resulted in a wide diversity of native landraces that represent an invaluable source of genetic information for exploring natural variation and genome evolution. We sequenced de novo the approximately 2-gigabase genome of the Mexican landrace Palomero Toluqueno (Palomero) and compared its features to those of the modern inbred line B73. We revealed differences concordant with its ancient origin and identified chromosomal regions of low nucleotide variability that contain domestication genes involved in heavy-metal detoxification. Our results indicate that environmental changes were important selective forces acting on maize domestication.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vielle-Calzada, Jean-Philippe -- Martinez de la Vega, Octavio -- Hernandez-Guzman, Gustavo -- Ibarra-Laclette, Enrique -- Alvarez-Mejia, Cesar -- Vega-Arreguin, Julio C -- Jimenez-Moraila, Beatriz -- Fernandez-Cortes, Araceli -- Corona-Armenta, Guillermo -- Herrera-Estrella, Luis -- Herrera-Estrella, Alfredo -- New York, N.Y. -- Science. 2009 Nov 20;326(5956):1078. doi: 10.1126/science.1178437.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratorio Nacional de Genomica para la Biodiversidad, CINVESTAV Irapuato, Km 9.6 Libramiento Norte Carretera Irapuato-Leon, 36500 Irapuato, Mexico.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965420" target="_blank"〉PubMed〈/a〉
    Keywords: Chromosome Mapping ; Chromosomes, Plant/genetics ; Crops, Agricultural/genetics/growth & development ; *Genes, Plant ; Genetic Variation ; *Genome, Plant ; Metals, Heavy/analysis/*metabolism/toxicity ; Molecular Sequence Data ; *Selection, Genetic ; Sequence Analysis, DNA ; Sequence Homology, Nucleic Acid ; Soil/analysis ; Zea mays/*genetics/growth & development/*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
    Publication Date: 2006-11-11
    Description: We report the sequence and analysis of the 814-megabase genome of the sea urchin Strongylocentrotus purpuratus, a model for developmental and systems biology. The sequencing strategy combined whole-genome shotgun and bacterial artificial chromosome (BAC) sequences. This use of BAC clones, aided by a pooling strategy, overcame difficulties associated with high heterozygosity of the genome. The genome encodes about 23,300 genes, including many previously thought to be vertebrate innovations or known only outside the deuterostomes. This echinoderm genome provides an evolutionary outgroup for the chordates and yields insights into the evolution of deuterostomes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3159423/" 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/PMC3159423/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sea Urchin Genome Sequencing Consortium -- Sodergren, Erica -- Weinstock, George M -- Davidson, Eric H -- Cameron, R Andrew -- Gibbs, Richard A -- Angerer, Robert C -- Angerer, Lynne M -- Arnone, Maria Ina -- Burgess, David R -- Burke, Robert D -- Coffman, James A -- Dean, Michael -- Elphick, Maurice R -- Ettensohn, Charles A -- Foltz, Kathy R -- Hamdoun, Amro -- Hynes, Richard O -- Klein, William H -- Marzluff, William -- McClay, David R -- Morris, Robert L -- Mushegian, Arcady -- Rast, Jonathan P -- Smith, L Courtney -- Thorndyke, Michael C -- Vacquier, Victor D -- Wessel, Gary M -- Wray, Greg -- Zhang, Lan -- Elsik, Christine G -- Ermolaeva, Olga -- Hlavina, Wratko -- Hofmann, Gretchen -- Kitts, Paul -- Landrum, Melissa J -- Mackey, Aaron J -- Maglott, Donna -- Panopoulou, Georgia -- Poustka, Albert J -- Pruitt, Kim -- Sapojnikov, Victor -- Song, Xingzhi -- Souvorov, Alexandre -- Solovyev, Victor -- Wei, Zheng -- Whittaker, Charles A -- Worley, Kim -- Durbin, K James -- Shen, Yufeng -- Fedrigo, Olivier -- Garfield, David -- Haygood, Ralph -- Primus, Alexander -- Satija, Rahul -- Severson, Tonya -- Gonzalez-Garay, Manuel L -- Jackson, Andrew R -- Milosavljevic, Aleksandar -- Tong, Mark -- Killian, Christopher E -- Livingston, Brian T -- Wilt, Fred H -- Adams, Nikki -- Belle, Robert -- Carbonneau, Seth -- Cheung, Rocky -- Cormier, Patrick -- Cosson, Bertrand -- Croce, Jenifer -- Fernandez-Guerra, Antonio -- Geneviere, Anne-Marie -- Goel, Manisha -- Kelkar, Hemant -- Morales, Julia -- Mulner-Lorillon, Odile -- Robertson, Anthony J -- Goldstone, Jared V -- Cole, Bryan -- Epel, David -- Gold, Bert -- Hahn, Mark E -- Howard-Ashby, Meredith -- Scally, Mark -- Stegeman, John J -- Allgood, Erin L -- Cool, Jonah -- Judkins, Kyle M -- McCafferty, Shawn S -- Musante, Ashlan M -- Obar, Robert A -- Rawson, Amanda P -- Rossetti, Blair J -- Gibbons, Ian R -- Hoffman, Matthew P -- Leone, Andrew -- Istrail, Sorin -- Materna, Stefan C -- Samanta, Manoj P -- Stolc, Viktor -- Tongprasit, Waraporn -- Tu, Qiang -- Bergeron, Karl-Frederik -- Brandhorst, Bruce P -- Whittle, James -- Berney, Kevin -- Bottjer, David J -- Calestani, Cristina -- Peterson, Kevin -- Chow, Elly -- Yuan, Qiu Autumn -- Elhaik, Eran -- Graur, Dan -- Reese, Justin T -- Bosdet, Ian -- Heesun, Shin -- Marra, Marco A -- Schein, Jacqueline -- Anderson, Michele K -- Brockton, Virginia -- Buckley, Katherine M -- Cohen, Avis H -- Fugmann, Sebastian D -- Hibino, Taku -- Loza-Coll, Mariano -- Majeske, Audrey J -- Messier, Cynthia -- Nair, Sham V -- Pancer, Zeev -- Terwilliger, David P -- Agca, Cavit -- Arboleda, Enrique -- Chen, Nansheng -- Churcher, Allison M -- Hallbook, F -- Humphrey, Glen W -- Idris, Mohammed M -- Kiyama, Takae -- Liang, Shuguang -- Mellott, Dan -- Mu, Xiuqian -- Murray, Greg -- Olinski, Robert P -- Raible, Florian -- Rowe, Matthew -- Taylor, John S -- Tessmar-Raible, Kristin -- Wang, D -- Wilson, Karen H -- Yaguchi, Shunsuke -- Gaasterland, Terry -- Galindo, Blanca E -- Gunaratne, Herath J -- Juliano, Celina -- Kinukawa, Masashi -- Moy, Gary W -- Neill, Anna T -- Nomura, Mamoru -- Raisch, Michael -- Reade, Anna -- Roux, Michelle M -- Song, Jia L -- Su, Yi-Hsien -- Townley, Ian K -- Voronina, Ekaterina -- Wong, Julian L -- Amore, Gabriele -- Branno, Margherita -- Brown, Euan R -- Cavalieri, Vincenzo -- Duboc, Veronique -- Duloquin, Louise -- Flytzanis, Constantin -- Gache, Christian -- Lapraz, Francois -- Lepage, Thierry -- Locascio, Annamaria -- Martinez, Pedro -- Matassi, Giorgio -- Matranga, Valeria -- Range, Ryan -- Rizzo, Francesca -- Rottinger, Eric -- Beane, Wendy -- Bradham, Cynthia -- Byrum, Christine -- Glenn, Tom -- Hussain, Sofia -- Manning, Gerard -- Miranda, Esther -- Thomason, Rebecca -- Walton, Katherine -- Wikramanayke, Athula -- Wu, Shu-Yu -- Xu, Ronghui -- Brown, C Titus -- Chen, Lili -- Gray, Rachel F -- Lee, Pei Yun -- Nam, Jongmin -- Oliveri, Paola -- Smith, Joel -- Muzny, Donna -- Bell, Stephanie -- Chacko, Joseph -- Cree, Andrew -- Curry, Stacey -- Davis, Clay -- Dinh, Huyen -- Dugan-Rocha, Shannon -- Fowler, Jerry -- Gill, Rachel -- Hamilton, Cerrissa -- Hernandez, Judith -- Hines, Sandra -- Hume, Jennifer -- Jackson, Laronda -- Jolivet, Angela -- Kovar, Christie -- Lee, Sandra -- Lewis, Lora -- Miner, George -- Morgan, Margaret -- Nazareth, Lynne V -- Okwuonu, Geoffrey -- Parker, David -- Pu, Ling-Ling -- Thorn, Rachel -- Wright, Rita -- 2P42 ESO7381/PHS HHS/ -- 5 U54 HG003273/HG/NHGRI NIH HHS/ -- EY11930/EY/NEI NIH HHS/ -- F32 ESO12794/PHS HHS/ -- F32 HD047136/HD/NICHD NIH HHS/ -- F32 HD047136-02/HD/NICHD NIH HHS/ -- F32 HD047136-03/HD/NICHD NIH HHS/ -- F32-HD47136/HD/NICHD NIH HHS/ -- GM058231/GM/NIGMS NIH HHS/ -- GM070840/GM/NIGMS NIH HHS/ -- GM61005/GM/NIGMS NIH HHS/ -- GM61464/GM/NIGMS NIH HHS/ -- HD-37105/HD/NICHD NIH HHS/ -- HD039948/HD/NICHD NIH HHS/ -- HD14483/HD/NICHD NIH HHS/ -- HD66219/HD/NICHD NIH HHS/ -- P30-CA14051/CA/NCI NIH HHS/ -- R01 ES006272/ES/NIEHS NIH HHS/ -- R01 ES006272-13/ES/NIEHS NIH HHS/ -- R01 GM070840/GM/NIGMS NIH HHS/ -- R01 HD028152/HD/NICHD NIH HHS/ -- R01ES006272/ES/NIEHS NIH HHS/ -- R37-HD12896/HD/NICHD NIH HHS/ -- RR-15044/RR/NCRR NIH HHS/ -- S19916/Biotechnology and Biological Sciences Research Council/United Kingdom -- T32 GM007601/GM/NIGMS NIH HHS/ -- U54 HG003273/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2006 Nov 10;314(5801):941-52.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17095691" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcification, Physiologic ; Cell Adhesion Molecules/genetics/physiology ; Complement Activation/genetics ; Computational Biology ; Embryonic Development/genetics ; Evolution, Molecular ; Gene Expression Regulation, Developmental ; Genes ; *Genome ; Immunity, Innate/genetics ; Immunologic Factors/genetics/physiology ; Male ; Nervous System Physiological Phenomena ; Proteins/genetics/physiology ; *Sequence Analysis, DNA ; Signal Transduction ; Strongylocentrotus purpuratus/embryology/*genetics/immunology/physiology ; Transcription Factors/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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  • 6
    Publication Date: 2006-01-28
    Description: Microbial life predominates in the ocean, yet little is known about its genomic variability, especially along the depth continuum. We report here genomic analyses of planktonic microbial communities in the North Pacific Subtropical Gyre, from the ocean's surface to near-sea floor depths. Sequence variation in microbial community genes reflected vertical zonation of taxonomic groups, functional gene repertoires, and metabolic potential. The distributional patterns of microbial genes suggested depth-variable community trends in carbon and energy metabolism, attachment and motility, gene mobility, and host-viral interactions. Comparative genomic analyses of stratified microbial communities have the potential to provide significant insight into higher-order community organization and dynamics.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉DeLong, Edward F -- Preston, Christina M -- Mincer, Tracy -- Rich, Virginia -- Hallam, Steven J -- Frigaard, Niels-Ulrik -- Martinez, Asuncion -- Sullivan, Matthew B -- Edwards, Robert -- Brito, Beltran Rodriguez -- Chisholm, Sallie W -- Karl, David M -- New York, N.Y. -- Science. 2006 Jan 27;311(5760):496-503.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Massachusetts Institute of Technology, Cambridge, MA 02139, USA. delong@mit.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16439655" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Archaea/classification/*genetics/metabolism ; Archaeal Proteins/chemistry/genetics/metabolism ; Bacteria/classification/*genetics/metabolism ; Bacterial Proteins/chemistry/genetics/metabolism ; Bacteriophages/genetics ; Base Sequence ; Cloning, Molecular ; Cluster Analysis ; Computational Biology ; Cosmids ; DNA, Viral/chemistry/genetics ; Ecosystem ; Gene Library ; *Genes, Archaeal ; *Genes, Bacterial ; Genes, rRNA ; *Genomics ; Molecular Sequence Data ; Pacific Ocean ; Seawater/*microbiology ; Sequence Analysis, DNA ; Water Microbiology
    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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  • 7
    Publication Date: 2007-07-28
    Description: The construction of multicellular organisms depends on stem cells-cells that can both regenerate and produce daughter cells that undergo differentiation. Here, we show that the gaseous messenger ethylene modulates cell division in the cells of the quiescent center, which act as a source of stem cells in the seedling root. The cells formed through these ethylene-induced divisions express quiescent center-specific genes and can repress differentiation of surrounding initial cells, showing that quiescence is not required for these cells to signal to adjacent stem cells. We propose that ethylene is part of a signaling pathway that modulates cell division in the quiescent center in the stem cell niche during the postembryonic development of the root system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ortega-Martinez, Olga -- Pernas, Monica -- Carol, Rachel J -- Dolan, Liam -- BBS/E/J/00000168/Biotechnology and Biological Sciences Research Council/United Kingdom -- New York, N.Y. -- Science. 2007 Jul 27;317(5837):507-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17656722" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acids, Cyclic/metabolism/pharmacology ; Arabidopsis/*cytology/genetics/growth & development/metabolism ; Arabidopsis Proteins/genetics/metabolism ; Cell Differentiation ; *Cell Division ; Ethylenes/biosynthesis/*metabolism ; Gene Expression ; Genes, Plant ; Glycine/analogs & derivatives/pharmacology ; Indoleacetic Acids/metabolism ; Mutation ; Naphthaleneacetic Acids/pharmacology ; Plant Roots/*cytology/growth & development/metabolism ; Protein Kinases/genetics/metabolism ; Signal Transduction ; Stem Cells/*cytology
    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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