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  • 1
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    A broad-spectrum chemokine antagonist encoded by Kaposi's sarcoma-associated herpesvirus (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-09-12
    Description: Kaposi's sarcoma-associated herpesvirus encodes a chemokine called vMIP-II. This protein displayed a broader spectrum of receptor activities than any mammalian chemokine as it bound with high affinity to a number of both CC and CXC chemokine receptors. Binding of vMIP-II, however, was not associated with the normal, rapid mobilization of calcium from intracellular stores; instead, it blocked calcium mobilization induced by endogenous chemokines. In freshly isolated human monocytes the virally encoded vMIP-II acted as a potent and efficient antagonist of chemotaxis induced by chemokines. Because vMIP-II could inhibit cell entry of human immunodeficiency virus (HIV) mediated through CCR3 and CCR5 as well as CXCR4, this protein may serve as a lead for development of broad-spectrum anti-HIV agents.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kledal, T N -- Rosenkilde, M M -- Coulin, F -- Simmons, G -- Johnsen, A H -- Alouani, S -- Power, C A -- Luttichau, H R -- Gerstoft, J -- Clapham, P R -- Clark-Lewis, I -- Wells, T N -- Schwartz, T W -- New York, N.Y. -- Science. 1997 Sep 12;277(5332):1656-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Molecular Pharmacology, Institute of Pharmacology, Panum Institute, University of Copenhagen, DK-2200 Copenhagen, Denmark.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9287217" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Calcium/metabolism ; Cell Line ; Chemokine CCL5/antagonists & inhibitors ; Chemokines/*antagonists & inhibitors/chemistry/genetics/*metabolism/pharmacology ; Chemotaxis, Leukocyte ; HIV-1/physiology ; Herpesvirus 8, Human/*genetics ; Humans ; Molecular Sequence Data ; Monocytes/cytology ; Receptors, Cytokine/antagonists & inhibitors/*metabolism ; Receptors, HIV/antagonists & inhibitors/*metabolism ; Recombinant Proteins/pharmacology ; Signal Transduction
    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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    Minimization of a polypeptide hormone (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-12-08
    Description: A stepwise approach for reducing the size of a polypeptide hormone, atrial natriuretic peptide (ANP), from 28 residues to 15 while retaining high biopotency is described. Systematic structural and functional analysis identified a discontinuous functional epitope for receptor binding and activation, most of which was placed onto a smaller ring (Cys6 to Cys17) that was created by repositioning the ANP native disulfide bond (Cys7 to Cys23). High affinity was subsequently restored by optimizing the remaining noncritical residues by means of phage display. Residues that flanked the mini-ring structure were then deleted in stages, and affinity losses were rectified by additional phage-sorting experiments. Thus, structural and functional data on hormones, coupled with phage display methods, can be used to shrink the hormones to moieties more amendable to small-molecule design.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, B -- Tom, J Y -- Oare, D -- Yen, R -- Fairbrother, W J -- Wells, J A -- Cunningham, B C -- New York, N.Y. -- Science. 1995 Dec 8;270(5242):1657-60.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Protein Engineering, Genenteeh, South San Francisco, CA 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7502074" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Atrial Natriuretic Factor/*chemistry/genetics/immunology/metabolism ; Base Sequence ; Cell Line ; Cyclic GMP/metabolism ; Epitopes ; Guanylate Cyclase/metabolism ; Models, Molecular ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Protein Conformation ; *Protein Engineering ; Receptors, Atrial Natriuretic Factor/metabolism
    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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    Hormone mimicry (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-07-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wells, J A -- New York, N.Y. -- Science. 1996 Jul 26;273(5274):449-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Protein Engineering, Genetech, San Francisco, CA 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8677438" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Bacteriophages ; Erythropoietin/chemistry/metabolism ; Hydrogen Bonding ; *Molecular Mimicry ; Molecular Sequence Data ; Molecular Weight ; Peptides/chemistry/*metabolism ; Protein Binding ; Protein Structure, Secondary ; Receptors, Erythropoietin/agonists/*metabolism
    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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