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  • Crystallography, X-Ray  (201)
  • American Association for the Advancement of Science (AAAS)  (201)
  • Springer
  • 2010-2014  (201)
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  • 1
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2010-01-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kang, Sebyung -- Douglas, Trevor -- New York, N.Y. -- Science. 2010 Jan 1;327(5961):42-3. doi: 10.1126/science.1184318.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry and Biochemistry and Center for Bio-Inspired Nanomaterials, Montana State University, Bozeman, MT 59717, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20044564" target="_blank"〉PubMed〈/a〉
    Keywords: Acetaldehyde/metabolism ; *Cell Compartmentation ; Crystallization ; Crystallography, X-Ray ; Cytosol/metabolism ; Escherichia coli/*chemistry/enzymology/*ultrastructure ; Escherichia coli Proteins/*chemistry/metabolism ; Ethanolamine/*metabolism ; Polyproteins/chemistry/metabolism ; Protein Folding ; Protein Structure, Tertiary
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  • 2
    Publication Date: 2010-11-27
    Description: Crystal structures of prokaryotic ribosomes have described in detail the universally conserved core of the translation mechanism. However, many facets of the translation process in eukaryotes are not shared with prokaryotes. The crystal structure of the yeast 80S ribosome determined at 4.15 angstrom resolution reveals the higher complexity of eukaryotic ribosomes, which are 40% larger than their bacterial counterparts. Our model shows how eukaryote-specific elements considerably expand the network of interactions within the ribosome and provides insights into eukaryote-specific features of protein synthesis. Our crystals capture the ribosome in the ratcheted state, which is essential for translocation of mRNA and transfer RNA (tRNA), and in which the small ribosomal subunit has rotated with respect to the large subunit. We describe the conformational changes in both ribosomal subunits that are involved in ratcheting and their implications in coordination between the two associated subunits and in mRNA and tRNA translocation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ben-Shem, Adam -- Jenner, Lasse -- Yusupova, Gulnara -- Yusupov, Marat -- New York, N.Y. -- Science. 2010 Nov 26;330(6008):1203-9. doi: 10.1126/science.1194294.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉IGBMC (Institut de Genetique et de Biologie Moleculaire et Cellulaire), 1 rue Laurent Fries, BP10142, Illkirch F-67400, France. adam@igbmc.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21109664" target="_blank"〉PubMed〈/a〉
    Keywords: Crystallization ; Crystallography, X-Ray ; Models, Molecular ; Nucleic Acid Conformation ; Peptide Chain Initiation, Translational ; Protein Binding ; *Protein Biosynthesis ; Protein Conformation ; RNA, Fungal/analysis/chemistry/metabolism ; RNA, Messenger/analysis/chemistry/metabolism ; RNA, Ribosomal/analysis/*chemistry/metabolism ; RNA, Transfer/chemistry/metabolism ; Ribosomal Proteins/analysis/*chemistry/metabolism ; Ribosome Subunits, Large, Eukaryotic/chemistry/metabolism/ultrastructure ; Ribosome Subunits, Small, Eukaryotic/chemistry/metabolism/ultrastructure ; Ribosomes/*chemistry/metabolism/*ultrastructure ; Saccharomyces cerevisiae/chemistry/genetics/metabolism/*ultrastructure ; Saccharomyces cerevisiae Proteins/analysis/chemistry/metabolism
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  • 3
    Publication Date: 2010-08-07
    Description: The class Ib ribonucleotide reductase of Escherichia coli can initiate reduction of nucleotides to deoxynucleotides with either a Mn(III)2-tyrosyl radical (Y*) or a Fe(III)2-Y* cofactor in the NrdF subunit. Whereas Fe(III)2-Y* can self-assemble from Fe(II)2-NrdF and O2, activation of Mn(II)2-NrdF requires a reduced flavoprotein, NrdI, proposed to form the oxidant for cofactor assembly by reduction of O2. The crystal structures reported here of E. coli Mn(II)2-NrdF and Fe(II)2-NrdF reveal different coordination environments, suggesting distinct initial binding sites for the oxidants during cofactor activation. In the structures of Mn(II)2-NrdF in complex with reduced and oxidized NrdI, a continuous channel connects the NrdI flavin cofactor to the NrdF Mn(II)2 active site. Crystallographic detection of a putative peroxide in this channel supports the proposed mechanism of Mn(III)2-Y* cofactor assembly.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3020666/" 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/PMC3020666/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boal, Amie K -- Cotruvo, Joseph A Jr -- Stubbe, JoAnne -- Rosenzweig, Amy C -- GM58518/GM/NIGMS NIH HHS/ -- GM81393/GM/NIGMS NIH HHS/ -- R01 GM058518/GM/NIGMS NIH HHS/ -- R01 GM058518-13/GM/NIGMS NIH HHS/ -- Y1-CO-1020/CO/NCI NIH HHS/ -- Y1-GM-1104/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2010 Sep 17;329(5998):1526-30. doi: 10.1126/science.1190187. Epub 2010 Aug 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Molecular Biology and Cell Biology, Northwestern University, Evanston, IL 60208, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20688982" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Catalytic Domain ; Coenzymes/chemistry/metabolism ; Crystallography, X-Ray ; Enzyme Activation ; Escherichia coli/*enzymology ; Escherichia coli Proteins/*chemistry/*metabolism ; Ferrous Compounds/chemistry/metabolism ; Flavin Mononucleotide/chemistry/metabolism ; Flavodoxin/*chemistry/metabolism ; Hydrogen Bonding ; Ligands ; Manganese/*chemistry/metabolism ; Models, Molecular ; Oxidants/chemistry/metabolism ; Oxidation-Reduction ; Oxygen/chemistry/metabolism ; Peroxides/chemistry/metabolism ; Protein Folding ; Protein Multimerization ; Protein Subunits/chemistry/metabolism ; Ribonucleotide Reductases/*chemistry/*metabolism
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  • 4
    Publication Date: 2010-02-06
    Description: Vesicular stomatitis virus (VSV) is a bullet-shaped rhabdovirus and a model system of negative-strand RNA viruses. Through direct visualization by means of cryo-electron microscopy, we show that each virion contains two nested, left-handed helices: an outer helix of matrix protein M and an inner helix of nucleoprotein N and RNA. M has a hub domain with four contact sites that link to neighboring M and N subunits, providing rigidity by clamping adjacent turns of the nucleocapsid. Side-by-side interactions between neighboring N subunits are critical for the nucleocapsid to form a bullet shape, and structure-based mutagenesis results support this description. Together, our data suggest a mechanism of VSV assembly in which the nucleocapsid spirals from the tip to become the helical trunk, both subsequently framed and rigidified by the M layer.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2892700/" 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/PMC2892700/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ge, Peng -- Tsao, Jun -- Schein, Stan -- Green, Todd J -- Luo, Ming -- Zhou, Z Hong -- AI050066/AI/NIAID NIH HHS/ -- AI069015/AI/NIAID NIH HHS/ -- GM071940/GM/NIGMS NIH HHS/ -- R01 AI050066/AI/NIAID NIH HHS/ -- R01 AI050066-08/AI/NIAID NIH HHS/ -- R01 AI069015/AI/NIAID NIH HHS/ -- R01 GM071940/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2010 Feb 5;327(5966):689-93. doi: 10.1126/science.1181766.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, Immunology, and Molecular Genetics, University of California at Los Angeles (UCLA), Los Angeles, CA 90095-7364, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20133572" target="_blank"〉PubMed〈/a〉
    Keywords: Cryoelectron Microscopy ; Crystallography, X-Ray ; Image Processing, Computer-Assisted ; Lipid Bilayers ; Models, Molecular ; Mutagenesis ; Nucleocapsid Proteins/*chemistry/genetics/ultrastructure ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Protein Subunits/chemistry ; RNA, Viral/*chemistry/ultrastructure ; Vesiculovirus/*chemistry/physiology/*ultrastructure ; Viral Matrix Proteins/*chemistry/ultrastructure ; Virion/chemistry/ultrastructure ; Virus Assembly
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  • 5
    Publication Date: 2010-11-13
    Description: CCA-adding enzymes [ATP(CTP):tRNA nucleotidyltransferases] add CCA onto the 3' end of transfer RNA (tRNA) precursors without using a nucleic acid template. Although the mechanism by which cytosine (C) is selected at position 75 of tRNA has been established, the mechanism by which adenine (A) is selected at position 76 remains elusive. Here, we report five cocrystal structures of the enzyme complexed with both a tRNA mimic and nucleoside triphosphates under catalytically active conditions. These structures suggest that adenosine 5'-monophosphate is incorporated onto the A76 position of the tRNA via a carboxylate-assisted, one-metal-ion mechanism with aspartate 110 functioning as a general base. The discrimination against incorporation of cytidine 5'-triphosphate (CTP) at position 76 arises from improper placement of the alpha phosphate of the incoming CTP, which results from the interaction of C with arginine 224 and prevents the nucleophilic attack by the 3' hydroxyl group of cytidine75.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3087442/" 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/PMC3087442/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pan, Baocheng -- Xiong, Yong -- Steitz, Thomas A -- GM57510/GM/NIGMS NIH HHS/ -- R01 GM057510/GM/NIGMS NIH HHS/ -- R01 GM057510-13/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2010 Nov 12;330(6006):937-40. doi: 10.1126/science.1194985.〈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/21071662" target="_blank"〉PubMed〈/a〉
    Keywords: Adenine/chemistry/*metabolism ; Adenosine Monophosphate/metabolism ; Adenosine Triphosphate/chemistry/metabolism ; Archaeoglobus fulgidus/*enzymology ; Catalytic Domain ; Crystallization ; Crystallography, X-Ray ; Cytidine Triphosphate/metabolism ; Cytosine/chemistry/*metabolism ; Hydrogen Bonding ; Models, Molecular ; Nucleic Acid Conformation ; Protein Conformation ; Protein Structure, Tertiary ; RNA Nucleotidyltransferases/*chemistry/*metabolism ; RNA, Transfer/chemistry/*metabolism
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  • 6
    Publication Date: 2010-09-11
    Description: Ion binding often mediates electron transfer in biological systems as a cofactor strategy, either as a promoter or as an inhibitor. However, it has rarely, if ever, been exploited for that purpose in synthetic host-guest assemblies. We report here that strong binding of specific anions (chloride, bromide, and methylsulfate but not tetrafluoroborate or hexafluorophosphate) to a tetrathiafulvalene calix[4]pyrrole (TTF-C4P) donor enforces a host conformation that favors electron transfer to a bisimidazolium quinone (BIQ2+) guest acceptor. In contrast, the addition of a tetraethylammonium cation, which binds more effectively than the BIQ2+ guest in the TTF-C4P cavity, leads to back electron transfer, restoring the initial oxidation states of the donor and acceptor pair. The products of these processes were characterized via spectroscopy and x-ray crystallography.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Park, Jung Su -- Karnas, Elizabeth -- Ohkubo, Kei -- Chen, Ping -- Kadish, Karl M -- Fukuzumi, Shunichi -- Bielawski, Christopher W -- Hudnall, Todd W -- Lynch, Vincent M -- Sessler, Jonathan L -- New York, N.Y. -- Science. 2010 Sep 10;329(5997):1324-7. doi: 10.1126/science.1192044.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry and Biochemistry, University Station-A5300, University of Texas, Austin, TX 78712-0165, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20829481" target="_blank"〉PubMed〈/a〉
    Keywords: Anions/*chemistry ; Bromides/chemistry ; Calixarenes/*chemistry ; Cations/*chemistry ; Chlorides/chemistry ; Crystallography, X-Ray ; Electron Spin Resonance Spectroscopy ; Electron Transport ; *Electrons ; Imidazoles/*chemistry ; Magnetic Resonance Spectroscopy ; Molecular Conformation ; Oxidation-Reduction ; Quinones/*chemistry ; Sulfuric Acid Esters/chemistry
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  • 7
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2010-09-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sjoberg, Britt-Marie -- New York, N.Y. -- Science. 2010 Sep 17;329(5998):1475-6. doi: 10.1126/science.1196347.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and Functional Genomics, Stockholm University, SE-10691 Stockholm, Sweden. britt-marie.sjoberg@molbio.su.se〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20847256" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/chemistry/metabolism ; Corynebacterium/*enzymology ; Crystallography, X-Ray ; Electron Spin Resonance Spectroscopy ; Enzyme Activation ; Escherichia coli/*enzymology ; Escherichia coli Proteins/*chemistry/metabolism ; Flavin Mononucleotide/chemistry/metabolism ; Flavodoxin/*chemistry/metabolism ; Manganese/chemistry/*metabolism ; Oxidation-Reduction ; Protein Subunits/chemistry/metabolism ; Ribonucleotide Reductases/*chemistry/metabolism
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  • 8
    Publication Date: 2010-06-26
    Description: The heme-copper oxidases (HCOs) accomplish the key event of aerobic respiration; they couple O2 reduction and transmembrane proton pumping. To gain new insights into the still enigmatic process, we structurally characterized a C-family HCO--essential for the pathogenicity of many bacteria--that differs from the two other HCO families, A and B, that have been structurally analyzed. The x-ray structure of the C-family cbb3 oxidase from Pseudomonas stutzeri at 3.2 angstrom resolution shows an electron supply system different from families A and B. Like family-B HCOs, C HCOs have only one pathway, which conducts protons via an alternative tyrosine-histidine cross-link. Structural differences around hemes b and b3 suggest a different redox-driven proton-pumping mechanism and provide clues to explain the higher activity of family-C HCOs at low oxygen concentrations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Buschmann, Sabine -- Warkentin, Eberhard -- Xie, Hao -- Langer, Julian D -- Ermler, Ulrich -- Michel, Hartmut -- New York, N.Y. -- Science. 2010 Jul 16;329(5989):327-30. doi: 10.1126/science.1187303. Epub 2010 Jun 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max-Planck-Institut fur Biophysik, Max-von-Laue-Strasse 3, D-60438 Frankfurt/Main, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20576851" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Catalytic Domain ; Crystallography, X-Ray ; Cytoplasm/metabolism ; Electron Transport ; Electron Transport Complex IV/*chemistry/*metabolism ; Heme/chemistry ; Histidine/chemistry ; Hydrogen Bonding ; Models, Molecular ; Molecular Sequence Data ; Oxidation-Reduction ; Oxygen/metabolism ; Periplasm/metabolism ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Proton Pumps/*chemistry/*metabolism ; *Protons ; Pseudomonas stutzeri/*enzymology ; Tyrosine/chemistry
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  • 9
    Publication Date: 2010-11-06
    Description: Protein synthesis requires several guanosine triphosphatase (GTPase) factors, including elongation factor Tu (EF-Tu), which delivers aminoacyl-transfer RNAs (tRNAs) to the ribosome. To understand how the ribosome triggers GTP hydrolysis in translational GTPases, we have determined the crystal structure of EF-Tu and aminoacyl-tRNA bound to the ribosome with a GTP analog, to 3.2 angstrom resolution. EF-Tu is in its active conformation, the switch I loop is ordered, and the catalytic histidine is coordinating the nucleophilic water in position for inline attack on the gamma-phosphate of GTP. This activated conformation is due to a critical and conserved interaction of the histidine with A2662 of the sarcin-ricin loop of the 23S ribosomal RNA. The structure suggests a universal mechanism for GTPase activation and hydrolysis in translational GTPases on the ribosome.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3763471/" 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/PMC3763471/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Voorhees, Rebecca M -- Schmeing, T Martin -- Kelley, Ann C -- Ramakrishnan, V -- 082086/Wellcome Trust/United Kingdom -- MC_U105184332/Medical Research Council/United Kingdom -- Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2010 Nov 5;330(6005):835-8. doi: 10.1126/science.1194460.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉MRC Laboratory of Molecular Biology, Cambridge CB2 0QH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21051640" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/chemistry/metabolism ; Catalytic Domain ; Crystallography, X-Ray ; Enzyme Activation ; Guanosine Triphosphate/analogs & derivatives/*metabolism ; Hydrolysis ; Hydrophobic and Hydrophilic Interactions ; Nucleic Acid Conformation ; Paromomycin/metabolism ; Peptide Elongation Factor Tu/*chemistry/*metabolism ; Phosphates/metabolism ; Protein Structure, Tertiary ; RNA, Bacterial/chemistry/*metabolism ; RNA, Ribosomal, 23S/chemistry/metabolism ; RNA, Transfer, Amino Acyl/chemistry/*metabolism ; Ribosomes/*metabolism ; Thermus thermophilus/chemistry/*metabolism/ultrastructure
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  • 10
    Publication Date: 2010-02-13
    Description: Microorganisms can switch from a planktonic, free-swimming life-style to a sessile, colonial state, called a biofilm, which confers resistance to environmental stress. Conversion between the motile and biofilm life-styles has been attributed to increased levels of the prokaryotic second messenger cyclic di-guanosine monophosphate (c-di-GMP), yet the signaling mechanisms mediating such a global switch are poorly understood. Here we show that the transcriptional regulator VpsT from Vibrio cholerae directly senses c-di-GMP to inversely control extracellular matrix production and motility, which identifies VpsT as a master regulator for biofilm formation. Rather than being regulated by phosphorylation, VpsT undergoes a change in oligomerization on c-di-GMP binding.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2828054/" 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/PMC2828054/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Krasteva, Petya V -- Fong, Jiunn C N -- Shikuma, Nicholas J -- Beyhan, Sinem -- Navarro, Marcos V A S -- Yildiz, Fitnat H -- Sondermann, Holger -- 1R01GM081373/GM/NIGMS NIH HHS/ -- P30 EB009998/EB/NIBIB NIH HHS/ -- R01 AI055987/AI/NIAID NIH HHS/ -- R01 AI055987-06A1/AI/NIAID NIH HHS/ -- R01 GM081373/GM/NIGMS NIH HHS/ -- R01 GM081373-03/GM/NIGMS NIH HHS/ -- R01AI055987/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2010 Feb 12;327(5967):866-8. doi: 10.1126/science.1181185.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20150502" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Bacterial Proteins/chemistry/genetics/*metabolism ; Binding Sites ; Biofilms/*growth & development ; Crystallography, X-Ray ; Cyclic GMP/*analogs & derivatives/metabolism ; DNA, Bacterial/metabolism ; Dimerization ; Extracellular Matrix/*metabolism ; Gene Expression Profiling ; Gene Expression Regulation, Bacterial ; Models, Molecular ; Movement ; Point Mutation ; Polysaccharides, Bacterial/genetics/metabolism ; Protein Folding ; Protein Multimerization ; Protein Structure, Tertiary ; Signal Transduction ; Transcription Factors/chemistry/genetics/*metabolism ; Transcription, Genetic ; Vibrio cholerae O1/cytology/genetics/*physiology
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