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  • Articles  (72)
  • Protein Conformation  (54)
  • Models, Molecular  (47)
  • American Association for the Advancement of Science (AAAS)  (72)
  • American Chemical Society (ACS)
  • Elsevier
  • Wiley
  • 2020-2024
  • 2015-2019
  • 1990-1994  (72)
  • 1980-1984
  • 1935-1939
  • 1991  (72)
  • Natural Sciences in General  (72)
  • Chemistry and Pharmacology  (72)
  • Law
  • Mathematics
Collection
  • Articles  (72)
Source
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (72)
  • American Chemical Society (ACS)
  • Elsevier
  • Wiley
Years
  • 2020-2024
  • 2015-2019
  • 1990-1994  (72)
  • 1980-1984
  • 1935-1939
Year
Journal
Topic
  • 11
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    Engineered metal-binding proteins: purification to protein folding (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-06-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arnold, F H -- Haymore, B L -- New York, N.Y. -- Science. 1991 Jun 28;252(5014):1796-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena 91125.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1648261" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Carrier Proteins/*chemical synthesis/chemistry/isolation & purification ; Cytochrome c Group/chemistry ; Histidine ; Ligands ; Metals/*metabolism ; Models, Molecular ; Protein Conformation ; *Protein Engineering
    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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  • 12
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    A component of calcium-activated potassium channels encoded by the Drosophila slo locus (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-08-02
    Description: Calcium-activated potassium channels mediate many biologically important functions in electrically excitable cells. Despite recent progress in the molecular analysis of voltage-activated K+ channels, Ca(2+)-activated K+ channels have not been similarly characterized. The Drosophila slowpoke (slo) locus, mutations of which specifically abolish a Ca(2+)-activated K+ current in muscles and neurons, provides an opportunity for molecular characterization of these channels. Genomic and complementary DNA clones from the slo locus were isolated and sequenced. The polypeptide predicted by slo is similar to voltage-activated K+ channel polypeptides in discrete domains known to be essential for function. Thus, these results indicate that slo encodes a structural component of Ca(2+)-activated K+ channels.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Atkinson, N S -- Robertson, G A -- Ganetzky, B -- NS15390/NS/NINDS NIH HHS/ -- T32 GM07131/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1991 Aug 2;253(5019):551-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Genetics, University of Wisconsin, Madison 53706.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1857984" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Calcium/pharmacology ; Chromosome Aberrations ; Chromosome Deletion ; Cloning, Molecular ; DNA/genetics/isolation & purification ; Drosophila/*genetics/physiology ; Exons ; Molecular Sequence Data ; Nucleic Acid Hybridization ; Phenotype ; Potassium Channels/drug effects/*genetics/physiology ; Protein Conformation ; Sequence Homology, Nucleic Acid ; Transcription, Genetic ; Translocation, 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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  • 13
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    First protein kinase structure (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-07-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoffman, M -- New York, N.Y. -- Science. 1991 Jul 26;253(5018):383.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1862341" target="_blank"〉PubMed〈/a〉
    Keywords: Carrier Proteins/chemistry/metabolism ; Enzyme Inhibitors/chemistry ; *Intracellular Signaling Peptides and Proteins ; Models, Molecular ; Protein Conformation ; Protein Kinases/*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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  • 14
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    The three-dimensional structure of canine parvovirus and its functional implications (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-03-22
    Description: The three-dimensional atomic structure of a single-stranded DNA virus has been determined. Infectious virions of canine parvovirus contain 60 protein subunits that are predominantly VP-2. The central structural motif of VP-2 has the same topology (an eight-stranded antiparallel beta barrel) as has been found in many other icosahedral viruses but represents only about one-third of the capsid protein. There is a 22 angstrom (A) long protrusion on the threefold axes, a 15 A deep canyon circulating about each of the five cylindrical structures at the fivefold axes, and a 15 A deep depression at the twofold axes. By analogy with rhinoviruses, the canyon may be the site of receptor attachment. Residues related to the antigenic properties of the virus are found on the threefold protrusions. Some of the amino termini of VP-2 run to the exterior in full but not empty virions, which is consistent with the observation that some VP-2 polypeptides in full particles can be cleaved by trypsin. Eleven nucleotides are seen in each of 60 symmetry-related pockets on the interior surface of the capsid and together account for 13 percent of the genome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tsao, J -- Chapman, M S -- Agbandje, M -- Keller, W -- Smith, K -- Wu, H -- Luo, M -- Smith, T J -- Rossmann, M G -- Compans, R W -- New York, N.Y. -- Science. 1991 Mar 22;251(5000):1456-64.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, Purdue University, West Lafayette, IN 47907.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2006420" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antigens, Viral/chemistry ; Capsid/ultrastructure ; Crystallography ; DNA, Viral/ultrastructure ; Hemagglutinins, Viral/chemistry ; Models, Molecular ; Molecular Sequence Data ; Molecular Structure ; Parvoviridae/*ultrastructure ; Virion/ultrastructure ; Virus Replication ; X-Ray Diffraction
    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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  • 15
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    Critical structural elements of the VP16 transcriptional activation domain (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-01-04
    Description: Virion protein 16 (VP16) of herpes simplex virus type 1 contains an acidic transcriptional activation domain. Missense mutations within this domain have provided insights into the structural elements critical for its function. Net negative charge contributed to, but was not sufficient for, transcriptional activation by VP16. A putative amphipathic alpha helix did not appear to be an important structural component of the activation domain. A phenylalanine residue at position 442 was exquisitely sensitive to mutation. Transcriptional activators of several classes contain hydrophobic amino acids arranged in patterns resembling that of VP16. Therefore, the mechanism of transcriptional activation by VP16 and other proteins may involve both ionic and specific hydrophobic interactions with target molecules.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cress, W D -- Triezenberg, S J -- AI 27323/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1991 Jan 4;251(4989):87-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Michigan State University, East Lansing 48824-1319.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1846049" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; *Immediate-Early Proteins ; Molecular Sequence Data ; Mutation ; Protein Conformation ; *Simplexvirus ; Structure-Activity Relationship ; Transcription Factors/*chemistry/genetics/pharmacology ; Transcription, Genetic/*drug effects ; Transfection ; Viral Proteins/*genetics ; Virion
    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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  • 16
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    Membrane-mediated assembly of filamentous bacteriophage Pf1 coat protein (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-05-31
    Description: Filamentous bacteriophage Pf1 assembles by a membrane-mediated process during which the viral DNA is secreted through the membrane while being encapsulated by the major coat protein. Neutron diffraction studies showed that in the virus most of the coat protein consists of two alpha-helical segments arranged end-to-end with an intervening mobile surface loop. Nuclear magnetic resonance studies of the coat protein in the membrane-bound form have shown that the secondary structure is essentially identical to that in the intact virus. A comparison indicates that during membrane-mediated viral assembly, while the secondary structure of the coat protein is largely conserved, its tertiary structure changes substantially.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nambudripad, R -- Stark, W -- Opella, S J -- Makowski, L -- New York, N.Y. -- Science. 1991 May 31;252(5010):1305-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physics, Boston University, MA 02215.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1925543" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteriophages/chemistry ; Capsid/*chemistry/metabolism ; *Capsid Proteins ; Cell Membrane/*metabolism ; Hydrogen Bonding ; Magnetic Resonance Spectroscopy ; Models, Molecular ; Molecular Structure ; Neutrons ; Protein Conformation
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  • 17
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    Tissue-specific splicing in vivo of the beta-tropomyosin gene: dependence on an RNA secondary structure (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-06-28
    Description: The beta-tropomyosin gene in chicken contains two mutually exclusive exons (exons 6A and 6B) which are used by the splicing apparatus in myogenic cells, respectively, before (myoblast stage) and after (myotube stage) differentiation. The myoblast splicing pattern is shown to depend on multiple sequence elements that are located in the upstream intron and in the exon 6B and that exert a negative control over exon 6B splicing. This regulation of splicing is due, at least in part, to a secondary structure of the primary transcript, which limits in vivo the accessibility of exon 6B in myoblasts.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Libri, D -- Piseri, A -- Fiszman, M Y -- New York, N.Y. -- Science. 1991 Jun 28;252(5014):1842-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut Pasteur, Paris, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2063196" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Chickens ; Exons ; Introns ; Models, Molecular ; Molecular Sequence Data ; Muscles/physiology ; Mutagenesis, Site-Directed ; Nucleic Acid Conformation ; RNA Precursors/*genetics ; *RNA Splicing ; RNA, Messenger/*genetics ; Transcription, Genetic ; Tropomyosin/*genetics
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 18
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    Three-dimensional structure of the LDL receptor-binding domain of human apolipoprotein E (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-06-28
    Description: Human apolipoprotein E, a blood plasma protein, mediates the transport and uptake of cholesterol and lipid by way of its high affinity interaction with different cellular receptors, including the low-density lipoprotein (LDL) receptor. The three-dimensional structure of the LDL receptor-binding domain of apoE has been determined at 2.5 angstrom resolution by x-ray crystallography. The protein forms an unusually elongated (65 angstroms) four-helix bundle, with the helices apparently stabilized by a tightly packed hydrophobic core that includes leucine zipper-type interactions and by numerous salt bridges on the mostly charged surface. Basic amino acids important for LDL receptor binding are clustered into a surface patch on one long helix. This structure provides the basis for understanding the behavior of naturally occurring mutants that can lead to atherosclerosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilson, C -- Wardell, M R -- Weisgraber, K H -- Mahley, R W -- Agard, D A -- HL-41633/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1991 Jun 28;252(5014):1817-22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, University of California, San Francisco 94143-0448.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2063194" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Apolipoproteins E/*chemistry/genetics/metabolism ; Binding Sites ; Computer Graphics ; Humans ; Models, Molecular ; Molecular Sequence Data ; Protein Conformation ; Receptors, LDL/*metabolism ; X-Ray Diffraction
    Print ISSN: 0036-8075
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  • 19
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    Structure of a legume lectin with an ordered N-linked carbohydrate in complex with lactose (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-11-08
    Description: The three-dimensional structure of the lactose complex of the Erythrina corallodendron lectin (EcorL), a dimer of N-glycosylated subunits, was determined crystallographically and refined at 2.0 angstrom resolution to an R value of 0.19. The tertiary structure of the subunit is similar to that of other legume lectins, but interference by the bulky N-linked heptasaccharide, which is exceptionally well ordered in the crystal, forces the EcorL dimer into a drastically different quaternary structure. Only the galactose moiety of the lactose ligand resides within the combining site. The galactose moiety is oriented differently from ligands in the mannose-glucose specific legume lectins and is held by hydrophobic interactions with Ala88, Tyr106, Phe131, and Ala218 and by seven hydrogen bonds, four of which are to the conserved Asp89, Asn133, and NH of Gly107. The specificity of legume lectins toward the different C-4 epimers appears to be associated with extensive variations in the outline of the variable parts of the binding sites.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shaanan, B -- Lis, H -- Sharon, N -- New York, N.Y. -- Science. 1991 Nov 8;254(5033):862-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1948067" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Carbohydrate Conformation ; Carbohydrate Sequence ; Computer Simulation ; Erythrina ; Glycosylation ; Hydrogen Bonding ; Lectins/*chemistry ; Macromolecular Substances ; Models, Molecular ; Molecular Sequence Data ; Oligosaccharides ; Plant Lectins ; Plants, Medicinal ; Protein Conformation ; X-Ray Diffraction
    Print ISSN: 0036-8075
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  • 20
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    Atomic structure of adenosine deaminase complexed with a transition-state analog: understanding catalysis and immunodeficiency mutations (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-05-31
    Description: The crystal structure of a murine adenosine deaminase complexed with 6-hydroxyl-1,6-dihydropurine ribonucleoside, a nearly ideal transition-state analog, has been determined and refined at 2.4 angstrom resolution. The structure is folded as an eight-stranded parallel alpha/beta barrel with a deep pocket at the beta-barrel COOH-terminal end wherein the inhibitor and a zinc are bound and completely sequestered. The presence of the zinc cofactor and the precise structure of the bound analog were not previously known. The 6R isomer of the analog is very tightly held in place by the coordination of the 6-hydroxyl to the zinc and the formation of nine hydrogen bonds. On the basis of the structure of the complex a stereoselective addition-elimination or SN2 mechanism of the enzyme is proposed with the zinc atom and the Glu and Asp residues playing key roles. A molecular explanation of a hereditary disease caused by several point mutations of an enzyme is also presented.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilson, D K -- Rudolph, F B -- Quiocho, F A -- CA14030/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1991 May 31;252(5010):1278-84.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Baylor College of Medicine, Houston, TX 77030.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1925539" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Deaminase/*chemistry/deficiency/metabolism ; Amino Acid Sequence ; Animals ; Binding Sites ; Catalysis ; Crystallization ; Immunologic Deficiency Syndromes/*enzymology/genetics ; Mice ; Models, Molecular ; Molecular Structure ; Mutation ; Protein Conformation ; Purine Nucleosides/chemistry/*metabolism ; Ribonucleosides/chemistry/*metabolism ; Zinc/metabolism
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