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  • Protein Structure, Secondary  (49)
  • American Association for the Advancement of Science (AAAS)  (49)
  • American Geophysical Union
  • Cambridge University Press
  • 2005-2009
  • 1995-1999  (49)
  • 1990-1994
  • 1970-1974
  • 1995  (49)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (49)
  • American Geophysical Union
  • Cambridge University Press
Years
  • 2005-2009
  • 1995-1999  (49)
  • 1990-1994
  • 1970-1974
Year
  • 1
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    Crystal structure of DCoH, a bifunctional, protein-binding transcriptional coactivator (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-04-28
    Description: DCoH, the dimerization cofactor of hepatocyte nuclear factor-1, stimulates gene expression by associating with specific DNA binding proteins and also catalyzes the dehydration of the biopterin cofactor of phenylalanine hydroxylase. The x-ray crystal structure determined at 3 angstrom resolution reveals that DCoH forms a tetramer containing two saddle-shaped grooves that comprise likely macromolecule binding sites. Two equivalent enzyme active sites flank each saddle, suggesting that there is a spatial connection between the catalytic and binding activities. Structural similarities between the DCoH fold and nucleic acid-binding proteins argue that the saddle motif has evolved to bind diverse ligands or that DCoH unexpectedly may bind nucleic acids.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Endrizzi, J A -- Cronk, J D -- Wang, W -- Crabtree, G R -- Alber, T -- New York, N.Y. -- Science. 1995 Apr 28;268(5210):556-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology, University of California, Berkeley 94720-3206, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7725101" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Binding Sites ; Computer Graphics ; Crystallography, X-Ray ; Gene Expression Regulation ; Hydro-Lyases/*chemistry/metabolism ; Models, Molecular ; Molecular Sequence Data ; Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Rats ; Recombinant Fusion Proteins/chemistry/metabolism ; Transcription Factors/*chemistry/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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  • 2
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    Structure of a hyperthermophilic tungstopterin enzyme, aldehyde ferredoxin oxidoreductase (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-03-10
    Description: The crystal structure of the tungsten-containing aldehyde ferredoxin oxidoreductase (AOR) from Pyrococcus furiosus, a hyperthermophilic archaeon (formerly archaebacterium) that grows optimally at 100 degrees C, has been determined at 2.3 angstrom resolution by means of multiple isomorphous replacement and multiple crystal form averaging. AOR consists of two identical subunits, each containing an Fe4S4 cluster and a molybdopterin-based tungsten cofactor that is analogous to the molybdenum cofactor found in a large class of oxotransferases. Whereas the general features of the tungsten coordination in this cofactor were consistent with a previously proposed structure, each AOR subunit unexpectedly contained two molybdopterin molecules that coordinate a tungsten by a total of four sulfur ligands, and the pterin system was modified by an intramolecular cyclization that generated a three-ringed structure. In comparison to other proteins, the hyperthermophilic enzyme AOR has a relatively small solvent-exposed surface area, and a relatively large number of both ion pairs and buried atoms. These properties may contribute to the extreme thermostability of this enzyme.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chan, M K -- Mukund, S -- Kletzin, A -- Adams, M W -- Rees, D C -- 1F32 GM15006/GM/NIGMS NIH HHS/ -- GM50775/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1995 Mar 10;267(5203):1463-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Chemistry and Chemical Engineering, Pasadena, CA 91125.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7878465" target="_blank"〉PubMed〈/a〉
    Keywords: Aldehyde Oxidoreductases/*chemistry/metabolism ; Amino Acid Sequence ; Archaea/*enzymology ; Binding Sites ; *Coenzymes ; Computer Graphics ; Crystallography, X-Ray ; Enzyme Stability ; Ferrous Compounds ; Metalloproteins/analysis/chemistry ; Models, Molecular ; Molecular Sequence Data ; Organometallic Compounds/analysis/*chemistry ; Oxidation-Reduction ; Protein Conformation ; Protein Structure, Secondary ; Pteridines/analysis/chemistry ; Pterins/analysis/*chemistry ; Surface Properties ; Temperature ; Tungsten/analysis/*chemistry
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  • 3
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    Structure of a complex of two plasma proteins: transthyretin and retinol-binding protein (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-05-19
    Description: The three-dimensional structure of the complex formed by two plasma proteins, transthyretin and retinol-binding protein, was determined from x-ray diffraction data to a nominal resolution of 3.1 angstroms. One tetramer of transthyretin was bound to two molecules of retinol-binding protein. The two retinol-binding protein molecules established molecular interactions with the same transthyretin dimer, and each also made contacts with one of the other two monomers. Thus, the other two potential binding sites in a transthyretin tetramer were blocked. The amino acid residues of the retinol-binding protein that were involved in the contacts were close to the retinol-binding site.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Monaco, H L -- Rizzi, M -- Coda, A -- New York, N.Y. -- Science. 1995 May 19;268(5213):1039-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, University of Pavia, Italy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7754382" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Biopolymers ; Chickens ; Crystallography, X-Ray ; Humans ; Models, Molecular ; Molecular Sequence Data ; Prealbumin/*chemistry ; Protein Binding ; Protein Conformation ; Protein Structure, Secondary ; Retinol-Binding Proteins/*chemistry ; Retinol-Binding Proteins, Plasma ; Sequence Homology, Amino Acid
    Print ISSN: 0036-8075
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  • 4
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    Crystal structure of the xanthine oxidase-related aldehyde oxido-reductase from D. gigas (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-11-17
    Description: The crystal structure of the aldehyde oxido-reductase (Mop) from the sulfate reducing anaerobic Gram-negative bacterium Desulfovibrio gigas has been determined at 2.25 A resolution by multiple isomorphous replacement and refined. The protein, a homodimer of 907 amino acid residues subunits, is a member of the xanthine oxidase family. The protein contains a molybdopterin cofactor (Mo-co) and two different [2Fe-2S] centers. It is folded into four domains of which the first two bind the iron sulfur centers and the last two are involved in Mo-co binding. Mo-co is a molybdenum molybdopterin cytosine dinucleotide. Molybdopterin forms a tricyclic system with the pterin bicycle annealed to a pyran ring. The molybdopterin dinucleotide is deeply buried in the protein. The cis-dithiolene group of the pyran ring binds the molybdenum, which is coordinated by three more (oxygen) ligands.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Romao, M J -- Archer, M -- Moura, I -- Moura, J J -- LeGall, J -- Engh, R -- Schneider, M -- Hof, P -- Huber, R -- New York, N.Y. -- Science. 1995 Nov 17;270(5239):1170-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Instituto de Tecnologia Quimica e Biologica, Oeiras, Portugal.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7502041" target="_blank"〉PubMed〈/a〉
    Keywords: Aldehyde Oxidoreductases/*chemistry/metabolism ; Amino Acid Sequence ; Animals ; Coenzymes/chemistry/metabolism ; Crystallization ; Crystallography, X-Ray ; Cytosine Nucleotides/chemistry/metabolism ; Desulfovibrio/*enzymology ; Drosophila melanogaster/enzymology ; Electron Transport ; Hydrogen Bonding ; Iron/chemistry ; Ligands ; Metalloproteins/chemistry/metabolism ; Molecular Sequence Data ; Molybdenum/chemistry/metabolism ; Oxidation-Reduction ; Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Pteridines/chemistry/metabolism ; Pterins/chemistry/metabolism ; Xanthine ; Xanthine Oxidase/*chemistry ; Xanthines/metabolism
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  • 5
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    Crystal structure of a purple acid phosphatase containing a dinuclear Fe(III)-Zn(II) active site (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-06-09
    Description: Kidney bean purple acid phosphatase (KBPAP) is an Fe(III)-Zn(II) metalloenzyme resembling the mammalian Fe(III)-Fe(II) purple acid phosphatases. The structure of the homodimeric 111-kilodalton KBPAP was determined at a resolution of 2.9 angstroms. The enzyme contains two domains in each subunit. The active site is located in the carboxyl-terminal domain at the carboxy end of two sandwiched beta alpha beta alpha beta motifs. The two metal ions are 3.1 angstroms apart and bridged monodentately by Asp164. The iron is further coordinated by Tyr167, His325, and Asp135, and the zinc by His286, His323, and Asn201. The active-site structure is consistent with previous proposals regarding the mechanism of phosphate ester hydrolysis involving nucleophilic attack on the phosphate group by an Fe(III)-coordinated hydroxide ion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Strater, N -- Klabunde, T -- Tucker, P -- Witzel, H -- Krebs, B -- New York, N.Y. -- Science. 1995 Jun 9;268(5216):1489-92.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Anorganisch-Chemisches Institut, Universitat Munster, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7770774" target="_blank"〉PubMed〈/a〉
    Keywords: Acid Phosphatase/*chemistry/metabolism ; Binding Sites ; Computer Graphics ; Crystallography, X-Ray ; Fabaceae/enzymology ; Ferric Compounds/chemistry/metabolism ; Glycoproteins/*chemistry/metabolism ; Ligands ; Models, Molecular ; Plants, Medicinal ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Zinc/chemistry/metabolism
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  • 6
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    Involvement of CRAF1, a relative of TRAF, in CD40 signaling (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-03-10
    Description: CD40 is a receptor on the surface of B lymphocytes, the activation of which leads to B cell survival, growth, and differentiation. A yeast two-hybrid screen identified a gene, CRAF1, encoding a protein that interacts directly with the CD40 cytoplasmic tail through a region of similarity to the tumor necrosis factor-alpha (TNF-alpha) receptor-associated factors. Overexpression of a truncated CRAF1 gene inhibited CD40-mediated up-regulation of CD23. A region of CRAF1 was similar to the TNF-alpha receptor-associated factors TRAF1 and TRAF2 and so defined a shared TRAF-C domain that was necessary and sufficient for CD40 binding and homodimerization. The CRAF1 sequence also predicted a long amphipathic helix, a pattern of five zinc fingers, and a zinc ring finger. It is likely that other members of the TNF receptor superfamily use CRAF-related proteins in their signal transduction processes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cheng, G -- Cleary, A M -- Ye, Z S -- Hong, D I -- Lederman, S -- Baltimore, D -- 5-T32-GM07367/GM/NIGMS NIH HHS/ -- A122346/PHS HHS/ -- R01-CA55713/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1995 Mar 10;267(5203):1494-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Massachusetts Institute of Technology, Cambridge 02139.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7533327" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, CD/*metabolism ; Antigens, CD40 ; Antigens, Differentiation, B-Lymphocyte/*metabolism ; Humans ; Mice ; Molecular Sequence Data ; Protein Structure, Secondary ; Proteins/chemistry/genetics/*physiology ; Receptors, IgE/metabolism ; Sequence Homology, Amino Acid ; *Signal Transduction ; TNF Receptor-Associated Factor 1 ; TNF Receptor-Associated Factor 2 ; TNF Receptor-Associated Factor 3 ; Up-Regulation ; Zinc Fingers
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  • 7
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    Regulatory subunit of protein kinase A: structure of deletion mutant with cAMP binding domains (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-08-11
    Description: In the molecular scheme of living organisms, adenosine 3',5'-monophosphate (cyclic AMP or cAMP) has been a universal second messenger. In eukaryotic cells, the primary receptors for cAMP are the regulatory subunits of cAMP-dependent protein kinase. The crystal structure of a 1-91 deletion mutant of the type I alpha regulatory subunit was refined to 2.8 A resolution. Each of the two tandem cAMP binding domains provides an extensive network of hydrogen bonds that buries the cyclic phosphate and the ribose between two beta strands that are linked by a short alpha helix. Each adenine base stacks against an aromatic ring that lies outside the beta barrel. This structure provides a molecular basis for understanding how cAMP binds cooperatively to its receptor protein, thus mediating activation of the kinase.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Su, Y -- Dostmann, W R -- Herberg, F W -- Durick, K -- Xuong, N H -- Ten Eyck, L -- Taylor, S S -- Varughese, K I -- GM07313/GM/NIGMS NIH HHS/ -- GM34921/GM/NIGMS NIH HHS/ -- RR01644/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1995 Aug 11;269(5225):807-13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla 92093-0654, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7638597" target="_blank"〉PubMed〈/a〉
    Keywords: Affinity Labels ; Amino Acid Sequence ; Binding Sites ; Carrier Proteins/*chemistry/genetics/metabolism ; Computer Graphics ; Crystallization ; Crystallography, X-Ray ; Cyclic AMP/analogs & derivatives/*metabolism ; Cyclic AMP-Dependent Protein Kinases/*chemistry ; Enzyme Activation ; Hydrogen Bonding ; *Intracellular Signaling Peptides and Proteins ; Models, Molecular ; Molecular Sequence Data ; Mutation ; Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Protein Structure, Tertiary
    Print ISSN: 0036-8075
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  • 8
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    Crystal structure of Pseudomonas mevalonii HMG-CoA reductase at 3.0 angstrom resolution (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-06-23
    Description: The rate-limiting step in cholesterol biosynthesis in mammals is catalyzed by 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase, a four-electron oxidoreductase that converts HMG-CoA to mevalonate. The crystal structure of HMG-CoA reductase from Pseudomonas mevalonii was determined at 3.0 angstrom resolution by multiple isomorphous replacement. The structure reveals a tightly bound dimer that brings together at the subunit interface the conserved residues implicated in substrate binding and catalysis. These dimers are packed about a threefold crystallographic axis, forming a hexamer with 23 point group symmetry. Difference Fourier studies reveal the binding sites for the substrates HMG-CoA and reduced or oxidized nicotinamide adenine dinucleotide [NAD(H)] and demonstrate that the active sites are at the dimer interfaces. The HMG-CoA is bound by a domain with an unusual fold, consisting of a central alpha helix surrounded by a triangular set of walls of beta sheets and alpha helices. The NAD(H) is bound by a domain characterized by an antiparallel beta structure that defines a class of dinucleotide-binding domains.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lawrence, C M -- Rodwell, V W -- Stauffacher, C V -- AI 127713/AI/NIAID NIH HHS/ -- HL 47113/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1995 Jun 23;268(5218):1758-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7792601" target="_blank"〉PubMed〈/a〉
    Keywords: Acyl Coenzyme A/metabolism ; Amino Acid Sequence ; Binding Sites ; Computer Graphics ; Crystallography, X-Ray ; Fourier Analysis ; Hydroxymethylglutaryl CoA Reductases/*chemistry/metabolism ; Models, Molecular ; Molecular Sequence Data ; NAD/metabolism ; Protein Folding ; Protein Structure, Secondary ; Pseudomonas/*enzymology
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  • 9
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    Crystal structure of lac repressor core tetramer and its implications for DNA looping (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-06-23
    Description: The crystal structure of the tryptic core fragment of the lac repressor of Escherichia coli (LacR) complexed with the inducer isopropyl-beta-D-thiogalactoside was determined at 2.6 A resolution. The quaternary structure consists of two dyad-symmetric dimers that are nearly parallel to each other. This structure places all four DNA binding domains of intact LacR on the same side of the tetramer, and results in a deep, V-shaped cleft between the two dimers. Each monomer contributes a carboxyl-terminal helix to an antiparallel four-helix bundle that functions as a tetramerization domain. Some of the side chains whose mutation reduce DNA binding form clusters on a surface near the amino terminus. Placing the structure of the DNA binding domain complexed with operator previously determined by nuclear magnetic resonance onto this surface results in two operators being adjacent and nearly parallel to each other. Structural considerations suggest that the two dimers of LacR may flexibly alter their relative orientation in order to bind to the known varied spacings between two operators.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Friedman, A M -- Fischmann, T O -- Steitz, T A -- GM22778/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1995 Jun 23;268(5218):1721-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biophysics and Biochemistry, Howard Hughes Medical Institute, Yale University, New Haven, CT 06520-8114, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7792597" target="_blank"〉PubMed〈/a〉
    Keywords: Crystallography, X-Ray ; DNA, Bacterial/*chemistry/metabolism ; Isopropyl Thiogalactoside/metabolism ; Models, Molecular ; *Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Repressor Proteins/*chemistry/metabolism
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  • 10
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    Crystal structure of the tetramerization domain of the p53 tumor suppressor at 1.7 angstroms (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-03-10
    Description: The p53 protein is a tetrameric transcription factor that plays a central role in the prevention of neoplastic transformation. Oligomerization appears to be essential for the tumor suppressing activity of p53 because oligomerization-deficient p53 mutants cannot suppress the growth of carcinoma cell lines. The crystal structure of the tetramerization domain of p53 (residues 325 to 356) was determined at 1.7 angstrom resolution and refined to a crystallographic R factor of 19.2 percent. The monomer, which consists of a beta strand and an alpha helix, associates with a second monomer across an antiparallel beta sheet and an antiparallel helix-helix interface to form a dimer. Two of these dimers associate across a second and distinct parallel helix-helix interface to form the tetramer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jeffrey, P D -- Gorina, S -- Pavletich, N P -- CA08748-29/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1995 Mar 10;267(5203):1498-502.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cellular Biochemistry and Biophysics Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10021.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7878469" target="_blank"〉PubMed〈/a〉
    Keywords: Computer Graphics ; Crystallography, X-Ray ; DNA/metabolism ; Hydrogen Bonding ; Macromolecular Substances ; Models, Molecular ; *Protein Conformation ; Protein Structure, Secondary ; Tumor Suppressor Protein p53/*chemistry/metabolism
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