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  • Articles  (63)
  • Binding Sites  (63)
  • 2000-2004  (63)
  • 2002  (63)
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  • Articles  (63)
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  • 2000-2004  (63)
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  • 1
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    Enzymology. A moving story (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-02-23
    Description: 〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3907122/" 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/PMC3907122/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Falke, Joseph J -- R01 GM040731/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2002 Feb 22;295(5559):1480-1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Biophysics Program and the Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309, USA. falke@colorado.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11859184" target="_blank"〉PubMed〈/a〉
    Keywords: Arginine/chemistry ; Binding Sites ; Catalysis ; Cyclophilin A/*chemistry/*metabolism ; Hydrogen Bonding ; Models, Molecular ; Nitrogen/chemistry ; Nuclear Magnetic Resonance, Biomolecular ; Protein Binding ; Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Thermodynamics
    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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    Cancer. BRCA2 enters the fray (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-09-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilson, John H -- Elledge, Stephen J -- New York, N.Y. -- Science. 2002 Sep 13;297(5588):1822-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12228708" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; BRCA1 Protein/metabolism ; BRCA2 Protein/*chemistry/*metabolism ; Binding Sites ; Breast Neoplasms/genetics ; Crystallography, X-Ray ; DNA/*metabolism ; DNA Damage ; *DNA Repair ; DNA, Single-Stranded/metabolism ; DNA-Binding Proteins/metabolism ; Female ; Genes, BRCA1 ; Genes, BRCA2 ; Genetic Predisposition to Disease ; Humans ; Mice ; Ovarian Neoplasms/genetics ; Protein Folding ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Rad51 Recombinase ; Rats ; Recombination, Genetic ; Replication Protein A
    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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    Visualization and functional analysis of RNA-dependent RNA polymerase lattices (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-06-22
    Description: Positive-strand RNA viruses such as poliovirus replicate their genomes on intracellular membranes of their eukaryotic hosts. Electron microscopy has revealed that purified poliovirus RNA-dependent RNA polymerase forms planar and tubular oligomeric arrays. The structural integrity of these arrays correlates with cooperative RNA binding and RNA elongation and is sensitive to mutations that disrupt intermolecular contacts predicted by the polymerase structure. Membranous vesicles isolated from poliovirus-infected cells contain structures consistent with the presence of two-dimensional polymerase arrays on their surfaces during infection. Therefore, host cytoplasmic membranes may function as physical foundations for two-dimensional polymerase arrays, conferring the advantages of surface catalysis to viral RNA replication.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lyle, John M -- Bullitt, Esther -- Bienz, Kurt -- Kirkegaard, Karla -- AI-42119/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2002 Jun 21;296(5576):2218-22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12077417" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Binding Sites ; Catalysis ; Crystallography, X-Ray ; HeLa Cells ; Humans ; Hydrogen-Ion Concentration ; Inclusion Bodies, Viral/metabolism/ultrastructure ; Microscopy, Electron ; Models, Molecular ; Molecular Sequence Data ; Mutation ; Nucleic Acid Conformation ; Poliovirus/*enzymology/physiology ; Protein Conformation ; Protein Structure, Quaternary ; Protein Structure, Tertiary ; RNA Replicase/*chemistry/isolation & purification/*metabolism/ultrastructure ; RNA, Viral/biosynthesis/*metabolism ; Viral Core Proteins/metabolism ; Virus Replication
    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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    BRCA2 function in DNA binding and recombination from a BRCA2-DSS1-ssDNA structure (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-09-14
    Description: Mutations in the BRCA2 (breast cancer susceptibility gene 2) tumor suppressor lead to chromosomal instability due to defects in the repair of double-strand DNA breaks (DSBs) by homologous recombination, but BRCA2's role in this process has been unclear. Here, we present the 3.1 angstrom crystal structure of a approximately 90-kilodalton BRCA2 domain bound to DSS1, which reveals three oligonucleotide-binding (OB) folds and a helix-turn-helix (HTH) motif. We also (i) demonstrate that this BRCA2 domain binds single-stranded DNA, (ii) present its 3.5 angstrom structure bound to oligo(dT)9, (iii) provide data that implicate the HTH motif in dsDNA binding, and (iv) show that BRCA2 stimulates RAD51-mediated recombination in vitro. These findings establish that BRCA2 functions directly in homologous recombination and provide a structural and biochemical basis for understanding the loss of recombination-mediated DSB repair in BRCA2-associated cancers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yang, Haijuan -- Jeffrey, Philip D -- Miller, Julie -- Kinnucan, Elspeth -- Sun, Yutong -- Thoma, Nicolas H -- Zheng, Ning -- Chen, Phang-Lang -- Lee, Wen-Hwa -- Pavletich, Nikola P -- New York, N.Y. -- Science. 2002 Sep 13;297(5588):1837-48.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, Sloan-Kettering Division, Joan and Sanford I. Weill Graduate School of Medical Sciences, Cornell University, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12228710" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; BRCA2 Protein/*chemistry/genetics/*metabolism ; Binding Sites ; Crystallography, X-Ray ; DNA/metabolism ; *DNA Repair ; DNA, Single-Stranded/*metabolism ; DNA-Binding Proteins/metabolism ; Genes, BRCA2 ; Helix-Turn-Helix Motifs ; Humans ; Hydrogen Bonding ; Hydrophobic and Hydrophilic Interactions ; Mice ; Molecular Sequence Data ; Mutation ; Proteasome Endopeptidase Complex ; Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Proteins/chemistry/*metabolism ; Rad51 Recombinase ; Rats ; *Recombination, 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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  • 5
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    Tackling cancer at the telomeres (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-03-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, Jean -- New York, N.Y. -- Science. 2002 Mar 29;295(5564):2350.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11923505" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Binding Sites ; Caspases/genetics ; Dendritic Cells/immunology ; Enzyme Inhibitors/*pharmacology/therapeutic use ; Genetic Therapy ; Humans ; Immunotherapy ; Neoplasms/drug therapy/*therapy ; RNA/metabolism ; RNA, Antisense/metabolism/pharmacology/therapeutic use ; Telomerase/antagonists & inhibitors/genetics/immunology/*metabolism ; Telomere/*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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  • 6
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    Structural insights into group II intron catalysis and branch-site selection (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-02-23
    Description: Group II self-splicing introns catalyze autoexcision from precursor RNA transcripts by a mechanism strikingly similar to that of the spliceosome, an RNA-protein assembly responsible for splicing together the protein-coding parts of most eukaryotic pre-mRNAs. Splicing in both cases initiates via nucleophilic attack at the 5' splice site by the 2' OH of a conserved intron adenosine residue, creating a branched (lariat) intermediate. Here, we describe the crystal structure at 3.0 A resolution of a 70-nucleotide RNA containing the catalytically essential domains 5 and 6 of the yeast ai5gamma group II self-splicing intron, revealing an unexpected two-nucleotide bulged structure around the branch-point adenosine in domain 6.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Lan -- Doudna, Jennifer A -- New York, N.Y. -- Science. 2002 Mar 15;295(5562):2084-8. Epub 2002 Feb 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biophysics and Biochemistry and, Howard Hughes Medical Institute, Yale University, New Haven, CT 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11859154" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine/chemistry/metabolism ; Base Pairing ; Binding Sites ; CME-Carbodiimide/*analogs & derivatives ; Catalysis ; Cobalt/metabolism ; Crystallization ; Crystallography, X-Ray ; *Introns ; Magnesium/metabolism ; Manganese/metabolism ; *Nucleic Acid Conformation ; Point Mutation ; RNA Precursors/chemistry/metabolism ; *RNA Splicing ; RNA, Fungal/*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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  • 7
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    Regulation of corepressor function by nuclear NADH (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-02-16
    Description: The corepressor CtBP (carboxyl-terminal binding protein) is involved in transcriptional pathways important for development, cell cycle regulation, and transformation. We demonstrate that CtBP binding to cellular and viral transcriptional repressors is regulated by the nicotinamide adenine dinucleotides NAD+ and NADH, with NADH being two to three orders of magnitude more effective. Levels of free nuclear nicotinamide adenine dinucleotides, determined using two-photon microscopy, correspond to the levels required for half-maximal CtBP binding and are considerably lower than those previously reported. Agents capable of increasing NADH levels stimulate CtBP binding to its partners in vivo and potentiate CtBP-mediated repression. We propose that this ability to detect changes in nuclear NAD+/NADH ratio allows CtBP to serve as a redox sensor for transcription.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Qinghong -- Piston, David W -- Goodman, Richard H -- K01 CA096561/CA/NCI NIH HHS/ -- R01 CA115468/CA/NCI NIH HHS/ -- R01 CA115468-05/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2002 Mar 8;295(5561):1895-7. Epub 2002 Feb 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Vollum Institute, Oregon Health Sciences University, 3181 SW Sam Jackson Park Road, Portland, OR 97201, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11847309" target="_blank"〉PubMed〈/a〉
    Keywords: Adenovirus E1A Proteins/metabolism ; Alcohol Oxidoreductases ; Amino Acid Sequence ; Animals ; Binding Sites ; Cadherins/genetics ; Cell Nucleus/*metabolism ; Cytoplasm/metabolism ; DNA-Binding Proteins/chemistry/genetics/*metabolism ; *Gene Expression Regulation ; HeLa Cells ; Homeodomain Proteins/metabolism ; Humans ; Microscopy, Fluorescence ; Molecular Sequence Data ; Mutation ; NAD/*metabolism ; Oxidation-Reduction ; Phosphoproteins/chemistry/genetics/*metabolism ; Promoter Regions, Genetic ; Protein Binding ; Recombinant Fusion Proteins/metabolism ; Repressor Proteins/*metabolism ; *Transcription Factors ; Transcription, Genetic ; Transfection
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    Structural biology. Not just another ABC transporter (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-05-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davidson, Amy L -- New York, N.Y. -- Science. 2002 May 10;296(5570):1038-40.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX 77030, USA. davidson@bcm.tmc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12004108" target="_blank"〉PubMed〈/a〉
    Keywords: ATP-Binding Cassette Transporters/*chemistry/metabolism ; Adenosine Triphosphate/metabolism ; Amino Acid Motifs ; Amino Acid Transport Systems, Basic/chemistry/metabolism ; Bacterial Proteins/chemistry/metabolism ; Binding Sites ; Carrier Proteins/chemistry/metabolism ; *DNA-Binding Proteins ; Dimerization ; Escherichia coli/*chemistry/metabolism ; Escherichia coli Proteins/*chemistry/metabolism ; Fungal Proteins/chemistry/metabolism ; Hydrolysis ; Models, Molecular ; *Periplasmic Binding Proteins ; Protein Conformation ; Protein Folding ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Protein Subunits ; *Saccharomyces cerevisiae Proteins ; Vitamin B 12/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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  • 9
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    Macromolecular architecture in eukaryotic cells visualized by cryoelectron tomography (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-11-09
    Description: Electron tomography of vitrified cells is a noninvasive three-dimensional imaging technique that opens up new vistas for exploring the supramolecular organization of the cytoplasm. We applied this technique to Dictyostelium cells, focusing on the actin cytoskeleton. In actin networks reconstructed without prior removal of membranes or extraction of soluble proteins, the cross-linking of individual microfilaments, their branching angles, and membrane attachment sites can be analyzed. At a resolution of 5 to 6 nanometers, single macromolecules with distinct shapes, such as the 26S proteasome, can be identified in an unperturbed cellular environment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Medalia, Ohad -- Weber, Igor -- Frangakis, Achilleas S -- Nicastro, Daniela -- Gerisch, Gunther -- Baumeister, Wolfgang -- New York, N.Y. -- Science. 2002 Nov 8;298(5596):1209-13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max Planck Institute for Biochemistry, D-82152 Martinsried, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12424373" target="_blank"〉PubMed〈/a〉
    Keywords: Actin Cytoskeleton/chemistry/metabolism/*ultrastructure ; Actins/ultrastructure ; Animals ; Binding Sites ; Cell Membrane/metabolism/ultrastructure ; Cell Movement ; Dictyostelium/chemistry/physiology/*ultrastructure ; Endoplasmic Reticulum, Rough/ultrastructure ; Freezing ; *Image Processing, Computer-Assisted ; Macromolecular Substances ; Microfilament Proteins/*ultrastructure ; Organelles/*ultrastructure ; Peptide Hydrolases/ultrastructure ; *Proteasome Endopeptidase Complex ; Proteome ; Protozoan Proteins/ultrastructure ; Ribosomes/ultrastructure ; Tomography/*methods
    Print ISSN: 0036-8075
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  • 10
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    Molecular basis of proton motive force generation: structure of formate dehydrogenase-N (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-03-09
    Description: The structure of the membrane protein formate dehydrogenase-N (Fdn-N), a major component of Escherichia coli nitrate respiration, has been determined at 1.6 angstroms. The structure demonstrates 11 redox centers, including molybdopterin-guanine dinucleotides, five [4Fe-4S] clusters, two heme b groups, and a menaquinone analog. These redox centers are aligned in a single chain, which extends almost 90 angstroms through the enzyme. The menaquinone reduction site associated with a possible proton pathway was also characterized. This structure provides critical insights into the proton motive force generation by redox loop, a common mechanism among a wide range of respiratory enzymes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jormakka, Mika -- Tornroth, Susanna -- Byrne, Bernadette -- Iwata, So -- New York, N.Y. -- Science. 2002 Mar 8;295(5561):1863-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biomedical Sciences, Imperial College, London SW7 2AZ, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11884747" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Catalysis ; Catalytic Domain ; Cell Membrane/enzymology ; Crystallography, X-Ray ; Electron Transport ; Escherichia coli/*enzymology ; Formate Dehydrogenases/*chemistry/metabolism ; Formates/metabolism ; Guanine Nucleotides/chemistry/metabolism ; Hydrogen Bonding ; Iron-Sulfur Proteins/chemistry/metabolism ; Membrane Potentials ; Models, Molecular ; Nitrate Reductases/chemistry/metabolism ; Oxidation-Reduction ; Protein Conformation ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Protein Subunits ; *Proton-Motive Force ; Protons ; Pterins/chemistry/metabolism ; Vitamin K 2/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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