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  • Articles  (221)
  • Crystallography, X-Ray  (221)
  • American Association for the Advancement of Science (AAAS)  (221)
  • American Association for the Advancement of Science
  • American Geophysical Union
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  • Science. 267(5197): 473-4.  (1)
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  • 25
  • Natural Sciences in General  (221)
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  • Articles  (221)
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Keywords
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  • American Association for the Advancement of Science (AAAS)  (221)
  • American Association for the Advancement of Science
  • American Geophysical Union
  • American Meteorological Society
  • American Physical Society (APS)
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  • 2010-2014  (81)
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  • 1
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    Crystal structure of the GpIbalpha-thrombin complex essential for platelet aggregation (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-07-12
    Description: Direct interaction between platelet receptor glycoprotein Ibalpha (GpIbalpha) and thrombin is required for platelet aggregation and activation at sites of vascular injury. Abnormal GpIbalpha-thrombin binding is associated with many pathological conditions,including occlusive arterial thrombosis and bleeding disorders. The crystal structure of the GpIbalpha-thrombin complex at 2.6 angstrom resolution reveals simultaneous interactions of GpIbalpha with exosite I of one thrombin molecule,and with exosite II of a second thrombin molecule. In the crystal lattice,the periodic arrangement of GpIbalpha-thrombin complexes mirrors a scaffold that could serve as a driving force for tight platelet adhesion. The details of these interactions reconcile GpIbalpha-thrombin binding modes that are presently controversial,highlighting two distinct interfaces that are potential targets for development of novel antithrombotic drugs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dumas, John J -- Kumar, Ravindra -- Seehra, Jasbir -- Somers, William S -- Mosyak, Lidia -- New York, N.Y. -- Science. 2003 Jul 11;301(5630):222-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemical and Screening Sciences, Wyeth, 200 Cambridge Park Drive, Cambridge, MA 02140, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12855811" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Blood Platelets/chemistry/physiology ; Crystallization ; Crystallography, X-Ray ; Humans ; Hydrogen Bonding ; Hydrophobic and Hydrophilic Interactions ; Models, Molecular ; Platelet Adhesiveness ; *Platelet Aggregation ; Platelet Glycoprotein GPIb-IX Complex/*chemistry/*metabolism ; Protein Binding ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Thrombin/*chemistry/*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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  • 2
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    Cylindrical channels from concave helices (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-02-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Calladine, C R -- Pratap, V -- Chandran, V -- Mizuguchi, K -- Luisi, B F -- New York, N.Y. -- Science. 2003 Jan 31;299(5607):661-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12561825" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Crystallography, X-Ray ; Escherichia coli Proteins/*chemistry ; Glycine/chemistry ; Ion Channels/*chemistry ; *Models, Molecular ; Protein Conformation ; Protein Structure, Secondary
    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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    Closing of the nucleotide pocket of kinesin-family motors upon binding to microtubules (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-05-06
    Description: We have used adenosine diphosphate analogs containing electron paramagnetic resonance (EPR) spin moieties and EPR spectroscopy to show that the nucleotide-binding site of kinesin-family motors closes when the motor.diphosphate complex binds to microtubules. Structural analyses demonstrate that a domain movement in the switch 1 region at the nucleotide site, homologous to domain movements in the switch 1 region in the G proteins [heterotrimeric guanine nucleotide-binding proteins], explains the EPR data. The switch movement primes the motor both for the free energy-yielding nucleotide hydrolysis reaction and for subsequent conformational changes that are crucial for the generation of force and directed motion along the microtubule.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Naber, Nariman -- Minehardt, Todd J -- Rice, Sarah -- Chen, Xiaoru -- Grammer, Jean -- Matuska, Marija -- Vale, Ronald D -- Kollman, Peter A -- Car, Roberto -- Yount, Ralph G -- Cooke, Roger -- Pate, Edward -- AR39643/AR/NIAMS NIH HHS/ -- AR42895/AR/NIAMS NIH HHS/ -- DK05915/DK/NIDDK NIH HHS/ -- GM29072/GM/NIGMS NIH HHS/ -- RR1081/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2003 May 2;300(5620):798-801.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of California, San Francisco, CA 94143, USA. naber@itsa.ucsf.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12730601" target="_blank"〉PubMed〈/a〉
    Keywords: Adenine Nucleotides/*metabolism ; Adenosine Diphosphate/analogs & derivatives/metabolism ; Adenosine Triphosphate/analogs & derivatives/metabolism ; Animals ; Binding Sites ; Computer Simulation ; Crystallography, X-Ray ; *Drosophila Proteins ; Drosophila melanogaster ; Electron Spin Resonance Spectroscopy ; Humans ; Hydrogen Bonding ; Hydrolysis ; Kinesin/*chemistry/*metabolism ; Microtubules/*metabolism ; Models, Molecular ; Molecular Motor Proteins/*chemistry/*metabolism ; Molecular Probes/metabolism ; Protein Conformation ; Spin Labels
    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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    Structural biology. Complex II is complex too (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-02-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hederstedt, Lars -- New York, N.Y. -- Science. 2003 Jan 31;299(5607):671-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell and Organism Biology, Lund University, SE-22362 Lund, Sweden. lars.hederstedt@cob.lu.se〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12560540" target="_blank"〉PubMed〈/a〉
    Keywords: Aerobiosis ; Anaerobiosis ; Binding Sites ; Crystallography, X-Ray ; Electron Transport ; Electron Transport Complex II ; Escherichia coli/*enzymology ; Flavin-Adenine Dinucleotide/metabolism ; Heme/chemistry/metabolism ; Models, Molecular ; Multienzyme Complexes/antagonists & inhibitors/*chemistry/*metabolism ; Oxidation-Reduction ; Oxidoreductases/antagonists & inhibitors/*chemistry/*metabolism ; Protein Conformation ; Protein Structure, Tertiary ; Protein Subunits/chemistry ; Reactive Oxygen Species/metabolism ; Succinate Dehydrogenase/antagonists & inhibitors/*chemistry/*metabolism ; Succinic Acid/metabolism ; Ubiquinone/chemistry/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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    Structural basis of multiple drug-binding capacity of the AcrB multidrug efflux pump (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-05-10
    Description: Multidrug efflux pumps cause serious problems in cancer chemotherapy and treatment of bacterial infections. Yet high-resolution structures of ligand transporter complexes have previously been unavailable. We obtained x-ray crystallographic structures of the trimeric AcrB pump from Escherichia coli with four structurally diverse ligands. The structures show that three molecules of ligands bind simultaneously to the extremely large central cavity of 5000 cubic angstroms, primarily by hydrophobic, aromatic stacking and van der Waals interactions. Each ligand uses a slightly different subset of AcrB residues for binding. The bound ligand molecules often interact with each other, stabilizing the binding.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yu, Edward W -- McDermott, Gerry -- Zgurskaya, Helen I -- Nikaido, Hiroshi -- Koshland, Daniel E Jr -- AI 09644/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2003 May 9;300(5621):976-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720-3202, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12738864" target="_blank"〉PubMed〈/a〉
    Keywords: Anti-Infective Agents/chemistry/metabolism ; Anti-Infective Agents, Local/chemistry/metabolism ; Binding Sites ; Carrier Proteins/*chemistry/isolation & purification/*metabolism ; Cell Membrane/chemistry ; Chemistry, Physical ; Ciprofloxacin/chemistry/metabolism ; Crystallization ; Crystallography, X-Ray ; Dequalinium/chemistry/metabolism ; Escherichia coli Proteins/*chemistry/isolation & purification/*metabolism ; Ethidium/chemistry/metabolism ; Hydrogen Bonding ; Hydrophobic and Hydrophilic Interactions ; Ligands ; Membrane Proteins/*chemistry/isolation & purification/*metabolism ; Models, Molecular ; Multidrug Resistance-Associated Proteins ; Physicochemical Phenomena ; Protein Binding ; Protein Conformation ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Rhodamines/chemistry/metabolism ; Static Electricity
    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
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    Structural genomics offers high-speed look at proteins (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Service, R F -- New York, N.Y. -- Science. 2000 Mar 17;287(5460):1954-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10755949" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Biotechnology ; Computer Simulation ; Crystallography, X-Ray ; *Drug Design ; Humans ; Models, Molecular ; Private Sector ; *Protein Conformation ; Protein Folding ; Proteins/*chemistry/*genetics/physiology ; Proteome ; Public Sector ; Research Support as Topic
    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
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    Structural basis of transcription: RNA polymerase II at 2.8 angstrom resolution (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-21
    Description: Structures of a 10-subunit yeast RNA polymerase II have been derived from two crystal forms at 2.8 and 3.1 angstrom resolution. Comparison of the structures reveals a division of the polymerase into four mobile modules, including a clamp, shown previously to swing over the active center. In the 2.8 angstrom structure, the clamp is in an open state, allowing entry of straight promoter DNA for the initiation of transcription. Three loops extending from the clamp may play roles in RNA unwinding and DNA rewinding during transcription. A 2.8 angstrom difference Fourier map reveals two metal ions at the active site, one persistently bound and the other possibly exchangeable during RNA synthesis. The results also provide evidence for RNA exit in the vicinity of the carboxyl-terminal repeat domain, coupling synthesis to RNA processing by enzymes bound to this domain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cramer, P -- Bushnell, D A -- Kornberg, R D -- GM49985/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Jun 8;292(5523):1863-76. Epub 2001 Apr 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305-5126, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11313498" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites ; Conserved Sequence ; Crystallography, X-Ray ; DNA, Fungal/chemistry/metabolism ; Fourier Analysis ; Hydrogen Bonding ; Magnesium/metabolism ; Metals/metabolism ; Models, Molecular ; Molecular Sequence Data ; Promoter Regions, Genetic ; Protein Conformation ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Protein Subunits ; RNA Polymerase II/*chemistry/*metabolism ; RNA Processing, Post-Transcriptional ; RNA, Fungal/biosynthesis/chemistry/metabolism ; RNA, Messenger/biosynthesis/chemistry/metabolism ; Saccharomyces cerevisiae/*enzymology/genetics ; Transcription Factors/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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  • 8
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    Ribosome structure. The ribosome in action (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-05-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dahlberg, A E -- New York, N.Y. -- Science. 2001 May 4;292(5518):868-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biology and Medicine, Brown University, Providence, RI 02912, USA. albert_dahlberg@brown.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11341282" target="_blank"〉PubMed〈/a〉
    Keywords: Anti-Bacterial Agents/pharmacology ; Anticodon ; Base Pairing ; Binding Sites ; Codon ; Crystallography, X-Ray ; *Protein Biosynthesis ; Protein Conformation ; RNA, Bacterial/chemistry/metabolism ; RNA, Messenger/chemistry/*metabolism ; RNA, Ribosomal/chemistry/metabolism ; RNA, Transfer/chemistry/*metabolism ; RNA, Transfer, Amino Acid-Specific/chemistry/*metabolism ; Ribosomal Proteins/chemistry/metabolism ; Ribosomes/chemistry/*metabolism/*ultrastructure ; Thermus thermophilus/genetics/metabolism/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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  • 9
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    X-ray crystallography. Transcription enzyme structure solved (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-05-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J -- New York, N.Y. -- Science. 2001 Apr 20;292(5516):411-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11330276" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Crystallography, X-Ray ; DNA/chemistry/metabolism ; Humans ; Models, Molecular ; Molecular Weight ; Protein Conformation ; RNA/biosynthesis/genetics ; RNA Polymerase II/*chemistry/metabolism ; *Transcription, Genetic ; Yeasts/*enzymology
    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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  • 10
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    Enzymology. Nickel to the fore (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-08-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thauer, R K -- New York, N.Y. -- Science. 2001 Aug 17;293(5533):1264-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max Planck Institute for Terrestrial Microbiology, D-35043 Marburg, Germany. thauer@mailer.uni-marburg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11509713" target="_blank"〉PubMed〈/a〉
    Keywords: Aldehyde Oxidoreductases/*chemistry/genetics/metabolism ; Bacteria, Anaerobic/*enzymology ; Binding Sites ; Carbon Monoxide/metabolism ; Cloning, Molecular ; Crystallization ; Crystallography, X-Ray ; Dimerization ; Electron Transport ; Escherichia coli/enzymology/genetics ; Iron/chemistry/metabolism ; Multienzyme Complexes/*chemistry/genetics/metabolism ; Nickel/*chemistry/metabolism ; Oxidation-Reduction ; Peptococcaceae/*enzymology ; Recombinant Proteins/chemistry/metabolism ; Sulfur/chemistry
    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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