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  • Amino Acid Sequence  (17)
  • Adult  (3)
  • American Association for the Advancement of Science (AAAS)  (20)
  • American Geophysical Union (AGU)
  • Oxford University Press
  • 1990-1994  (20)
Collection
Publisher
  • American Association for the Advancement of Science (AAAS)  (20)
  • American Geophysical Union (AGU)
  • Oxford University Press
Years
Year
  • 1
    Publication Date: 1990-07-20
    Description: The crystallographic structure of a recombinant hirudin-thrombin complex has been solved at 2.3 angstrom (A) resolution. Hirudin consists of an NH2-terminal globular domain and a long (39 A) COOH-terminal extended domain. Residues Ile1 to Tyr3 of hirudin form a parallel beta-strand with Ser214 to Glu217 of thrombin with the nitrogen atom of Ile1 making a hydrogen bond with Ser195 O gamma atom of the catalytic site, but the specificity pocket of thrombin is not involved in the interaction. The COOH-terminal segment makes numerous electrostatic interactions with an anion-binding exosite of thrombin, whereas the last five residues are in a helical loop that forms many hydrophobic contacts. In all, 27 of the 65 residues of hirudin have contacts less than 4.0 A with thrombin (10 ion pairs and 23 hydrogen bonds). Such abundant interactions may account for the high affinity and specificity of hirudin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rydel, T J -- Ravichandran, K G -- Tulinsky, A -- Bode, W -- Huber, R -- Roitsch, C -- Fenton, J W 2nd -- HL13160/HL/NHLBI NIH HHS/ -- HL43229/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1990 Jul 20;249(4966):277-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Michigan State University, East Lansing 48824.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2374926" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites ; Hirudins/*metabolism ; Humans ; Models, Molecular ; Molecular Sequence Data ; Protein Binding ; Protein Conformation ; Recombinant Proteins/metabolism ; Thrombin/*metabolism ; X-Ray Diffraction
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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  • 2
    Publication Date: 1990-12-14
    Description: The principal neutralizing determinant (PND) of human immunodeficiency virus (HIV)-1 resides within the V3 loop of the envelope protein. Antibodies elicited by peptides of this region were able to neutralize diverse isolates. Serum from one of three animals immunized with the human T cell lymphoma virus (HTLV)-IIIMN PND peptide, RP142, neutralized MN and the sequence-divergent HTLV-IIIB isolate. Serum from one of three animals immunized with a 13-amino acid IIIB PND peptide (RP337) also neutralized both of these isolates. Characterization of these sera revealed that the cross-neutralizing antibodies bound the amino acid sequence GlyProGlyArgAlaPhe (GPGRAF) that is present in both isolates. This sequence is frequently found in the PNDs analyzed in randomly selected HIV-1 isolates. Sera from two rabbits immunized with a peptide containing only the GPGRAF residues neutralized divergent isolates, including IIIB and MN.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Javaherian, K -- Langlois, A J -- LaRosa, G J -- Profy, A T -- Bolognesi, D P -- Herlihy, W C -- Putney, S D -- Matthews, T J -- New York, N.Y. -- Science. 1990 Dec 14;250(4987):1590-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Surgery, Duke University Medical School, Durham, NC 27710.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1703322" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/microbiology ; Amino Acid Sequence ; Animals ; Enzyme-Linked Immunosorbent Assay ; Epitopes/*immunology ; Guinea Pigs ; HIV Antibodies/*immunology ; HIV Antigens/*immunology ; HIV-1/*immunology ; Humans ; Immune Sera/immunology ; Immunization ; Molecular Sequence Data ; Neutralization Tests ; Rabbits ; Viral Envelope Proteins/immunology
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  • 3
    Publication Date: 1991-09-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉LaRosa, G J -- Weinhold, K -- Profy, A T -- Langlois, A J -- Dreesman, G R -- Boswell, R N -- Shadduck, P -- Bolognesi, D P -- Matthews, T J -- Emini, E A -- New York, N.Y. -- Science. 1991 Sep 6;253(5024):1146.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Repligen Corporation, Cambridge, MA 02139.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1887238" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/microbiology ; Amino Acid Sequence ; Databases, Factual ; Genes, Viral ; Genetic Variation ; HIV-1/*genetics ; Humans ; Molecular Sequence Data ; Polymerase Chain Reaction/methods
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  • 4
    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
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  • 5
    Publication Date: 1990-01-26
    Description: A synthetic peptidemimetic substrate of the human immunodeficiency virus 1 (HIV-1) protease with a nonhydrolyzable pseudodipeptidyl insert at the protease cleavage site was prepared. The peptide U-81749 inhibited recombinant HIV-1 protease in vitro (inhibition constant Ki of 70 nanomolar) and HIV-1 replication in human peripheral blood lymphocytes (inhibitory concentration IC50 of 0.1 to 1 micromolar). Moreover, 10 micromolar concentrations of U-81749 significantly inhibited proteolysis of the HIV-1 gag polyprotein (p55) to the mature viral structural proteins p24 and p17 in cells infected with a recombinant vaccinia virus expressing the HIV-1 gag-pol genes. The HIV-1 like particles released from inhibitor-treated cells contained almost exclusively p55 and other gag precursors, but not p24. Incubation of HIV-like particles recovered from drug-treated cultures in drug-free medium indicated that inhibition of p55 proteolysis was at least partially reversible, suggesting that U-81749 was present within the particles.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McQuade, T J -- Tomasselli, A G -- Liu, L -- Karacostas, V -- Moss, B -- Sawyer, T K -- Heinrikson, R L -- Tarpley, W G -- New York, N.Y. -- Science. 1990 Jan 26;247(4941):454-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Infectious Disease Research Unit, Upjohn Company, Kalamazoo, MI 49001.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2405486" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antiviral Agents/*pharmacology ; DNA, Viral/genetics ; Endopeptidases/*metabolism ; Fusion Proteins, gag-pol/genetics/metabolism ; Gene Products, gag/metabolism ; HIV Protease ; HIV-1/*drug effects/genetics/physiology ; Humans ; Lymphocytes/microbiology ; Molecular Sequence Data ; Molecular Structure ; Oligopeptides/*pharmacology ; Protease Inhibitors/*pharmacology ; Protein Precursors/metabolism ; RNA, Viral/metabolism ; Transfection ; Virus Replication/drug effects
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  • 6
    Publication Date: 1990-06-25
    Description: Lipoprotein-associated coagulation inhibitor (LACI) appears to inhibit tissue factor (TF)-induced blood coagulation by forming a quaternary inhibitory complex containing factor Xa, LACI, factor VIIa, and TF. A genetically engineered hybrid protein consisting of the light chain of factor Xa and the first Kunitz-type inhibitor domain of LACI is shown to directly inhibit the activity of the factor VIIa-TF catalytic complex. Unlike inhibition of factor VIIa-TF activity by native LACI, inhibition by the hybrid protein is not dependent on factor Xa. In an assay of TF-induced coagulation, 50% TF inhibition occurs with hybrid protein at 35 nanograms per milliliter, whereas LACI at 2.5 micrograms per milliliter is required for an equivalent effect. gamma-Carboxylation of glutamic acid residues in the factor Xa light chain portion of the hybrid protein is required for inhibitory activity, indicating that the first Kunitz-type domain of LACI alone is not sufficient for inhibition of factor VIIa-TF.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Girard, T J -- MacPhail, L A -- Likert, K M -- Novotny, W F -- Miletich, J P -- Broze, G J Jr -- New York, N.Y. -- Science. 1990 Jun 15;248(4961):1421-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Hematology/Oncology, Jewish Hospital, Washington University Medical Center, St. Louis, MO 63110.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1972598" target="_blank"〉PubMed〈/a〉
    Keywords: 1-Carboxyglutamic Acid/metabolism ; Amino Acid Sequence ; Animals ; Binding Sites ; Calcium/metabolism ; Cell Line ; Cloning, Molecular ; Factor VII/antagonists & inhibitors/metabolism/*pharmacology ; Factor VIIa/*antagonists & inhibitors/metabolism ; Factor Xa/metabolism/*pharmacology ; Fibroblasts/metabolism ; Glutamates/metabolism ; Glutamic Acid ; Lipoproteins/metabolism/*pharmacology ; Mice ; Molecular Sequence Data ; Papillomaviridae ; Protease Inhibitors/*pharmacology ; Protein Sorting Signals ; Recombinant Fusion Proteins/*pharmacology ; Thromboplastin/antagonists & inhibitors/metabolism/*pharmacology ; Transfection
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  • 7
    Publication Date: 1991-07-05
    Description: Cells of the monocyte-macrophage lineage are targets for human immunodeficiency virus-1 (HIV-1) infection in vivo. However, many laboratory strains of HIV-1 that efficiently infect transformed T cell lines replicate poorly in macrophages. A 20-amino acid sequence from the macrophage-tropic BaL isolate of HIV-1 was sufficient to confer macrophage tropism on HTLV-IIIB, a T cell line--tropic isolate. This small sequence element is in the V3 loop, the envelope domain that is the principal neutralizing determinant of HIV-1. Thus, the V3 loop not only serves as a target of the host immune response but is also pivotal in determining HIV-1 tissue tropism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hwang, S S -- Boyle, T J -- Lyerly, H K -- Cullen, B R -- New York, N.Y. -- Science. 1991 Jul 5;253(5015):71-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, Duke University Medical Center, Durham, NC 27710.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1905842" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cell Movement/*genetics ; Chimera ; Genes, env/physiology ; HIV-1/genetics/*physiology ; Haplorhini ; Molecular Sequence Data ; Mutation ; Proviruses ; Restriction Mapping ; Sequence Homology, Nucleic Acid ; Viral Envelope Proteins/*genetics
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  • 8
    Publication Date: 1992-08-07
    Description: Autosomal recessive generalized myotonia (Becker's disease) (GM) and autosomal dominant myotonia congenita (Thomsen's disease) (MC) are characterized by skeletal muscle stiffness that is a result of muscle membrane hyperexcitability. For both diseases, alterations in muscle chloride or sodium currents or both have been observed. A complementary DNA for a human skeletal muscle chloride channel (CLC-1) was cloned, physically localized on chromosome 7, and linked to the T cell receptor beta (TCRB) locus. Tight linkage of these two loci to GM and MC was found in German families. An unusual restriction site in the CLC-1 locus in two GM families identified a mutation associated with that disease, a phenylalanine-to-cysteine substitution in putative transmembrane domain D8. This suggests that different mutations in CLC-1 may cause dominant or recessive myotonia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koch, M C -- Steinmeyer, K -- Lorenz, C -- Ricker, K -- Wolf, F -- Otto, M -- Zoll, B -- Lehmann-Horn, F -- Grzeschik, K H -- Jentsch, T J -- New York, N.Y. -- Science. 1992 Aug 7;257(5071):797-800.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Center for Human Genetics, Marburg University, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1379744" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Blotting, Southern ; Chloride Channels ; *Chromosomes, Human, Pair 7 ; Cloning, Molecular ; DNA/genetics ; Female ; *Genes, Dominant ; *Genes, Recessive ; Genetic Linkage ; Humans ; Ion Channels/*genetics ; Lod Score ; Male ; Membrane Proteins/*genetics ; Molecular Sequence Data ; Muscular Dystrophies/*genetics ; Myotonia Congenita/*genetics ; Pedigree ; Polymorphism, Restriction Fragment Length ; Receptors, Antigen, T-Cell/genetics ; Recombination, Genetic ; Sequence Homology, Nucleic Acid
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  • 9
    Publication Date: 1990-10-12
    Description: Since 1979, a continuing study of monozygotic and dizygotic twins, separated in infancy and reared apart, has subjected more than 100 sets of reared-apart twins or triplets to a week of intensive psychological and physiological assessment. Like the prior, smaller studies of monozygotic twins reared apart, about 70% of the variance in IQ was found to be associated with genetic variation. On multiple measures of personality and temperament, occupational and leisure-time interests, and social attitudes, monozygotic twins reared apart are about as similar as are monozygotic twins reared together. These findings extend and support those from numerous other twin, family, and adoption studies. It is a plausible hypothesis that genetic differences affect psychological differences largely indirectly, by influencing the effective environment of the developing child. This evidence for the strong heritability of most psychological traits, sensibly construed, does not detract from the value or importance of parenting, education, and other propaedeutic interventions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bouchard, T J Jr -- Lykken, D T -- McGue, M -- Segal, N L -- Tellegen, A -- AG06886/AG/NIA NIH HHS/ -- MH37860/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1990 Oct 12;250(4978):223-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychology, University of Minnesota, Minneapolis 55455.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2218526" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Analysis of Variance ; Anthropometry ; Child ; *Child Rearing ; Humans ; *Intelligence ; Minnesota ; Personality ; Phenotype ; Twins/*psychology ; Twins, Dizygotic/psychology ; Twins, Monozygotic/psychology
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  • 10
    Publication Date: 1992-11-13
    Description: A national probability survey of human immunodeficiency virus (HIV)-related risk factors among the general heterosexual population, the National AIDS (acquired immunodeficiency syndrome) Behavioral Surveys, has obtained data from 10,630 respondents. Data are presented on the prevalence of HIV-related risks in the general heterosexual population, on the distribution of the three largest risk groups across social strata, and on the prevalence and distribution of condom use among heterosexuals reporting a risk factor. Between 15 and 31 percent of heterosexuals nationally and 20 and 41 percent in cities with a high prevalence of AIDS reported an HIV risk factor. Condom use was relatively low. Only 17 percent of those with multiple sexual partners, 12.6 percent of those with risky sexual partners, and 10.8 percent of untested transfusion recipients used condoms all the time. Overall, the results suggest that current HIV prevention programs have, to a very limited extent, reached those heterosexuals with multiple sexual partners but have failed to reach many other groups of the heterosexual population at risk for HIV. New public health strategies may be needed for these specific risk groups.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Catania, J A -- Coates, T J -- Stall, R -- Turner, H -- Peterson, J -- Hearst, N -- Dolcini, M M -- Hudes, E -- Gagnon, J -- Wiley, J -- MH43892/MH/NIMH NIH HHS/ -- MH46240/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1992 Nov 13;258(5085):1101-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of California, San Francisco 94143.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1439818" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*epidemiology/prevention & control ; Adolescent ; Adult ; Age Factors ; Aged ; Blood Transfusion ; *Condoms ; Continental Population Groups ; Female ; HIV Seropositivity ; Health Surveys ; Hemophilia A/complications ; Humans ; Interviews as Topic ; Male ; Middle Aged ; Regression Analysis ; Risk Factors ; Sexual Behavior ; Sexual Partners ; Substance Abuse, Intravenous ; Time Factors ; United States
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