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  • 1
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    A family tree for heavyweights (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rice, D W -- New York, N.Y. -- Science. 2001 Nov 16;294(5546):1459.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11713776" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Artiodactyla/*classification ; Cetacea/classification ; History, 19th Century ; Mammals/*classification ; *Phylogeny ; Whales/*classification
    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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  • 2
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    Detecting protein function and protein-protein interactions from genome sequences (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-07-31
    Description: A computational method is proposed for inferring protein interactions from genome sequences on the basis of the observation that some pairs of interacting proteins have homologs in another organism fused into a single protein chain. Searching sequences from many genomes revealed 6809 such putative protein-protein interactions in Escherichia coli and 45,502 in yeast. Many members of these pairs were confirmed as functionally related; computational filtering further enriches for interactions. Some proteins have links to several other proteins; these coupled links appear to represent functional interactions such as complexes or pathways. Experimentally confirmed interacting pairs are documented in a Database of Interacting Proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marcotte, E M -- Pellegrini, M -- Ng, H L -- Rice, D W -- Yeates, T O -- Eisenberg, D -- P01 GM 31299/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Jul 30;285(5428):751-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉UCLA-Department of Energy Laboratory of Structural Biology and Molecular Medicine, University of California at Los Angeles, Los Angeles, CA 90095-1570, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10427000" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Bacterial Proteins/chemistry/genetics/metabolism/physiology ; Binding Sites ; *Computational Biology ; Databases, Factual ; Escherichia coli/genetics ; Evolution, Molecular ; Fungal Proteins/chemistry/genetics/metabolism ; *Genome ; Genome, Bacterial ; Genome, Fungal ; Humans ; Models, Biological ; Proteins/chemistry/genetics/metabolism/*physiology ; *Sequence Homology, Amino Acid ; *Sequence Homology, Nucleic Acid ; Thermodynamics
    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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  • 3
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    A mechanism of drug action revealed by structural studies of enoyl reductase (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-12-20
    Description: Enoyl reductase (ENR), an enzyme involved in fatty acid biosynthesis, is the target for antibacterial diazaborines and the front-line antituberculosis drug isoniazid. Analysis of the structures of complexes of Escherichia coli ENR with nicotinamide adenine dinucleotide and either thienodiazaborine or benzodiazaborine revealed the formation of a covalent bond between the 2' hydroxyl of the nicotinamide ribose and a boron atom in the drugs to generate a tight, noncovalently bound bisubstrate analog. This analysis has implications for the structure-based design of inhibitors of ENR, and similarities to other oxidoreductases suggest that mimicking this molecular linkage may have generic applications in other areas of medicinal chemistry.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baldock, C -- Rafferty, J B -- Sedelnikova, S E -- Baker, P J -- Stuitje, A R -- Slabas, A R -- Hawkes, T R -- Rice, D W -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):2107-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Krebs Institute for Biomolecular Research, Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN, UK. D.Rice@sheffield.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8953047" target="_blank"〉PubMed〈/a〉
    Keywords: Anti-Bacterial Agents/*metabolism/pharmacology ; Binding Sites ; Boron Compounds/*metabolism/pharmacology ; Crystallography, X-Ray ; Drug Design ; Drug Resistance, Microbial ; Enoyl-(Acyl-Carrier-Protein) Reductase (NADH) ; Enzyme Inhibitors/*metabolism/pharmacology ; Escherichia coli/enzymology ; Escherichia coli Proteins ; Fatty Acid Synthase, Type II ; Fatty Acid Synthases/antagonists & inhibitors/*chemistry/metabolism ; Hydrogen Bonding ; Models, Molecular ; NAD/*metabolism ; Oxidoreductases/antagonists & inhibitors/*chemistry/metabolism ; 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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  • 4
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    Crystal structure of DNA recombination protein RuvA and a model for its binding to the Holliday junction (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-10-18
    Description: The Escherichia coli DNA binding protein RuvA acts in concert with the helicase RuvB to drive branch migration of Holliday intermediates during recombination and DNA repair. The atomic structure of RuvA was determined at a resolution of 1.9 angstroms. Four monomers of RuvA are related by fourfold symmetry in a manner reminiscent of a four-petaled flower. The four DNA duplex arms of a Holliday junction can be modeled in a square planar configuration and docked into grooves on the concave surface of the protein around a central pin that may facilitate strand separation during the migration reaction. The model presented reveals how a RuvAB-junction complex may also accommodate the resolvase RuvC.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rafferty, J B -- Sedelnikova, S E -- Hargreaves, D -- Artymiuk, P J -- Baker, P J -- Sharples, G J -- Mahdi, A A -- Lloyd, R G -- Rice, D W -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1996 Oct 18;274(5286):415-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Krebs Institute, Department of Molecular Biology and Biotechnology, University of Sheffield, Western Bank, Sheffield S10 2TN, UK. d.rice@sheffield.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8832889" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/*chemistry/metabolism ; Base Composition ; Crystallography, X-Ray ; DNA Helicases/metabolism ; DNA, Bacterial/chemistry/*metabolism ; DNA-Binding Proteins/*chemistry/metabolism ; Endodeoxyribonucleases/metabolism ; Escherichia coli ; *Escherichia coli Proteins ; Hydrogen Bonding ; Models, Molecular ; *Nucleic Acid Conformation ; Oligodeoxyribonucleotides/chemistry/metabolism ; *Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; *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
    Electronic Resource
    Electronic Resource
    The structure and domain organization of Escherichia coli isocitrate lyase (2001)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 1209-1218 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Enzymes of the glyoxylate-bypass pathway are potential targets for the control of many human diseases caused by such pathogens as Mycobacteria and Leishmania. Isocitrate lyase catalyses the first committed step in this pathway and the structure of this tetrameric enzyme from Escherichia coli has been determined at 2.1 Å resolution. E. coli isocitrate lyase, like the enzyme from other prokaryotes, is located in the cytoplasm, whereas in plants, protozoa, algae and fungi this enzyme is found localized in glyoxysomes. Comparison of the structure of the prokaryotic isocitrate lyase with that from the eukaryote Aspergillus nidulans reveals a different domain structure following the deletion of approximately 100 residues from the larger eukaryotic enzyme. Despite this, the active sites of the prokaryotic and eukaryotic enzymes are very closely related, including the apparent disorder of two equivalent segments of the protein that are known to be involved in a conformational change as part of the enzyme's catalytic cycle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444901008642
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  • 6
    Electronic Resource
    Electronic Resource
    Crystallization and preliminary X-ray analysis of Citrobacter amalonaticus methylaspartate ammonia lyase (2001)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 1922-1924 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Methylaspartate ammonia lyase (MAL) catalyses the reversible α,β-elimination of ammonia from L-threo-(2S,3S)-3-methylaspartic acid to give mesaconic acid. Crystals of Citrobacter amalonaticus MAL have been obtained by the hanging-drop method of vapour diffusion using ammonium sulfate as the precipitant. Three crystal forms were obtained from identical crystallization conditions, two of which (forms A and B) diffract to high resolution, whilst the third form diffracted poorly. Crystals of form A diffract to beyond 2.1 Å and have been characterized as belonging to one of the enantiomorphic space groups P4122 or P4322, with unit-cell parameters a = b = 66.0, c = 233.1 Å, α = β = γ = 90° and a monomer in the asymmetric unit. Crystals of form B diffract to beyond 1.5 Å and belong to space group C222, with unit-cell parameters a = 128.3, b = 237.4, c = 65.8 Å, α = β = γ = 90° and a dimer in the asymmetric unit. Determination of the structure of MAL will be an important step in resolving current conflicts concerning the enzyme mechanism which differ between one which places MAL as a member of the superfamily of ammonia lyases whose catalytic activity requires a cofactor formed by post-translational modification of the enzyme and another which links MAL to the enolase superfamily.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444901016675
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  • 7
    Electronic Resource
    Electronic Resource
    Crystallization of the NAD(P)-dependent glutamate dehydrogenase from the hyperthermophile Pyrococcus furiosus (1995)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 51 (1995), S. 240-242 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The NAD(P)-dependent glutamate dehydrogenase from Pyrococcus furiosus has been crystallized by the hanging-drop method of vapour diffusion using lithium sulfate as the precipitant. The crystals belong to the tetragonal system and are in space group P42212 with unit-cell dimensions of a = b = 167.2, c = 172.9 Å. Consideration of the values of Vm and possible packing of the molecules within the cell suggest that the asymmetric unit contains a trimer. P. furiosus belongs to the family of Archaea and is one of the most thermostable organisms known, having an optimal growth temperature of 376 K. The glutamate dehydrogenase isolated from this organism has a half-life of 12 h at 373 K and, therefore, the determination of the structure of this enzyme will be important in advancing our understanding of how proteins are adapted to enable them to survive at such extreme temperatures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444994012862
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  • 8
    Electronic Resource
    Electronic Resource
    Crystallization of NAD+-dependent phenylalanine dehydrogenase from Nocardia sp239 (1998)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 54 (1998), S. 269-272 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The NAD+-dependent phenylalanine dehydrogenase from Nocardia sp239 has been crystallized by the hanging-drop method of vapour diffusion using ammonium sulfate as the precipitant. Two crystal forms were obtained in the presence and absence of the enzyme substrates phenylpyruvic acid or phenylalanine and its coenzyme NADH. Crystals of the native protein belong to the hexagonal system, with the space group being one of the enantiomorphic pair P6122 or P6522. The cell dimensions are a = b = 111.0, c = 174.5 Å, α = β = 90 and γ = 120°. Crystals grown from the protein co-crystallized with its substrates all belong to the trigonal system, space group P3121 or P3221, with unit-cell dimensions of a = b = 88.1 , c = 112.6 Å, α = β = 90 and γ = 120°. Preliminary protein-sequencing experiments have established that this enzyme is related to the octameric PheDH's which are members of the wider superfamily of amino-acid dehydrogenases. However, gel-filtration studies suggest that this enzyme is active as a monomer. The full determination of the three-dimensional structure of this phenylalanine dehydrogenase will add to the understanding of the molecular basis of the differential substrate specificity within this enzyme superfamily. In turn this will contribute to the rational design of an amino-acid dehydrogenase which could be used for the diagnosis of phenylketonuria and for the chiral synthesis of high-value pharmaceuticals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444997009980
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  • 9
    Electronic Resource
    Electronic Resource
    Crystallization of the glutamate dehydrogenase from the hyperthermophilic archaeon Thermococcus litoralis (1996)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 52 (1996), S. 1185-1187 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The NADP+-dependent glutamate dehydrogenase from Thermococcus litoralis has been crystallized by the hanging-drop method of vapour diffusion using an ammonium sulfate and PEG mixture as the precipitant. The crystals belong to the monoclinic system and are in space group C2 with unit-cell dimensions a = 142.7, b = 202.0, c = 125.8 Å with β = 113.1° with a hexamer in the asymmetric unit. T. Litoralis, a hyperthermophilic organism, belongs to the family of Archaea and has a maximum growth temperature of about 370 K. The glutamate dehydrogenase isolated from this organism has a half-life of 2 h at 373 K and a comparison of this structure with that of other GluDH's from hyperthermophilic organisms and from mesophiles will contribute to an understanding of the molecular mechanisms which underlie thermostability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444996007421
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  • 10
    Electronic Resource
    Electronic Resource
    Crystallization of cytochrome b562 from Erwinia chrysanthemi (1997)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 53 (1997), S. 197-199 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Cytochrome b562 from Erwinia chrysanthemi has been crystallized using the hanging-drop vapour-diffusion method with ammonium sulfate as the precipitant. X-ray precession photographs show that the crystals formed belong to either of the enantiomorphic space groups P41212 or P43212 with the cell parameters a = b = 98.6 and c = 62.7 Å. Estimation of the crystal density and consideration of the possible values for Vm indicate that there is either a dimer or trimer in the asymmetric unit. Experiments using the synchrotron radiation source at the CCLRC Daresbury Laboratory have shown that the crystals diffract to at least 2.7 Å resolution. An analysis of the N-terminal sequence indicates that this cytochrome shows limited homology to the cytochrome b562 from E. coli. Determination of the structure will therefore allow analysis of the relationship between these two proteins.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444996011201
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