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  • 1
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    Molecular cloning of the thyrotropin receptor (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-12-22
    Description: The pituitary hormone thyrotropin, or thyroid-stimulating hormone (TSH), is the main physiological agent that regulates the thyroid gland. The thyrotropin receptor (TSHR) was cloned by selective amplification with the polymerase chain reaction of DNA segments presenting sequence similarity with genes for G protein-coupled receptors. Out of 11 new putative receptor clones obtained from genomic DNA, one had sequence characteristics different from all the others. Although this clone did not hybridize to thyroid transcripts, screening of a dog thyroid complementary DNA (cDNA) library at moderate stringency identified a cDNA encoding a 4.9-kilobase thyroid-specific transcript. The polypeptide encoded by this thyroid-specific transcript consisted of a 398-amino acid residue amino-terminal segment, constituting a putative extracellular domain, connected to a 346-residue carboxyl-terminal domain that contained seven putative transmembrane segments. Expression of the cDNA conferred TSH responsiveness to Xenopus oocytes and Y1 cells and a TSH binding phenotype to COS cells. The TSHR and the receptor for luteinizing hormone-choriogonadotropin constitute a subfamily of G protein-coupled receptors with distinct sequence characteristics.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Parmentier, M -- Libert, F -- Maenhaut, C -- Lefort, A -- Gerard, C -- Perret, J -- Van Sande, J -- Dumont, J E -- Vassart, G -- R01-DK21732/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1989 Dec 22;246(4937):1620-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Recherche Interdisciplinaire, Faculte de Medecine, Universite Libre de Bruxelles, Belgium.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2556796" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Blotting, Northern ; Cell Line ; *Cloning, Molecular ; Cyclic AMP ; Dogs ; Female ; *Genes ; Molecular Sequence Data ; Oocytes/drug effects/metabolism ; Organ Specificity ; Polymerase Chain Reaction/methods ; RNA, Messenger/genetics ; Receptors, Thyrotropin/*genetics ; Thyrotropin/pharmacology ; Transcription, Genetic ; Xenopus
    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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    CD4-independent binding of SIV gp120 to rhesus CCR5 (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-12-31
    Description: CCR5 and CD4 are coreceptors for immunodeficiency virus entry into target cells. The gp120 envelope glycoprotein from human immunodeficiency virus strain HIV-1(YU2) bound human CCR5 (CCR5hu) or rhesus macaque CCR5 (CCR5rh) only in the presence of CD4. The gp120 from simian immunodeficiency virus strain SIVmac239 bound CCR5rh without CD4, but CCR5hu remained CD4-dependent. The CD4-independent binding of SIVmac239 gp120 depended on a single amino acid, Asp13, in the CCR5rh amino-terminus. Thus, CCR5-binding moieties on the immunodeficiency virus envelope glycoprotein can be generated by interaction with CD4 or by direct interaction with the CCR5 amino-terminus. These results may have implications for the evolution of receptor use among lentiviruses as well as utility in the development of effective intervention.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martin, K A -- Wyatt, R -- Farzan, M -- Choe, H -- Marcon, L -- Desjardins, E -- Robinson, J -- Sodroski, J -- Gerard, C -- Gerard, N P -- AI41581/AI/NIAID NIH HHS/ -- HL36162/HL/NHLBI NIH HHS/ -- HL51366/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1997 Nov 21;278(5342):1470-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Perlmutter Laboratory, Children's Hospital, Department of Medicine, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9367961" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibodies, Monoclonal ; Antigens, CD4/*physiology ; Cell Line ; HIV Antibodies/immunology ; HIV Envelope Protein gp120/chemistry/*metabolism ; HIV-2/immunology ; Humans ; Macaca mulatta ; Macrophages/virology ; *Membrane Glycoproteins ; Mutation ; Receptors, CCR5/chemistry/*metabolism ; Simian Immunodeficiency Virus/*metabolism ; Transfection ; *Viral Envelope Proteins
    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)
    Location Call Number Expected Availability
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    PAPER CURRENT
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