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  • 1
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    Structures of the CXCR4 chemokine GPCR with small-molecule and cyclic peptide antagonists (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-10-12
    Description: Chemokine receptors are critical regulators of cell migration in the context of immune surveillance, inflammation, and development. The G protein-coupled chemokine receptor CXCR4 is specifically implicated in cancer metastasis and HIV-1 infection. Here we report five independent crystal structures of CXCR4 bound to an antagonist small molecule IT1t and a cyclic peptide CVX15 at 2.5 to 3.2 angstrom resolution. All structures reveal a consistent homodimer with an interface including helices V and VI that may be involved in regulating signaling. The location and shape of the ligand-binding sites differ from other G protein-coupled receptors and are closer to the extracellular surface. These structures provide new clues about the interactions between CXCR4 and its natural ligand CXCL12, and with the HIV-1 glycoprotein gp120.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3074590/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3074590/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wu, Beili -- Chien, Ellen Y T -- Mol, Clifford D -- Fenalti, Gustavo -- Liu, Wei -- Katritch, Vsevolod -- Abagyan, Ruben -- Brooun, Alexei -- Wells, Peter -- Bi, F Christopher -- Hamel, Damon J -- Kuhn, Peter -- Handel, Tracy M -- Cherezov, Vadim -- Stevens, Raymond C -- F32 GM083463/GM/NIGMS NIH HHS/ -- F32 GM083463-03/GM/NIGMS NIH HHS/ -- GM075915/GM/NIGMS NIH HHS/ -- P50 GM073197/GM/NIGMS NIH HHS/ -- P50 GM073197-07/GM/NIGMS NIH HHS/ -- R01 AI037113/AI/NIAID NIH HHS/ -- R01 AI037113-13/AI/NIAID NIH HHS/ -- R01 GM071872/GM/NIGMS NIH HHS/ -- R01 GM081763/GM/NIGMS NIH HHS/ -- R01 GM081763-03/GM/NIGMS NIH HHS/ -- R01 GM089857/GM/NIGMS NIH HHS/ -- R21 AI087189/AI/NIAID NIH HHS/ -- R21 AI087189-02/AI/NIAID NIH HHS/ -- R21 RR025336/RR/NCRR NIH HHS/ -- R21 RR025336-01A1/RR/NCRR NIH HHS/ -- U54 GM074961/GM/NIGMS NIH HHS/ -- U54 GM074961-050001/GM/NIGMS NIH HHS/ -- U54 GM094618/GM/NIGMS NIH HHS/ -- Y1-CO-1020/CO/NCI NIH HHS/ -- Y1-GM-1104/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2010 Nov 19;330(6007):1066-71. doi: 10.1126/science.1194396. Epub 2010 Oct 7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20929726" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Chemokine CXCL12 ; Crystallography, X-Ray ; HIV Envelope Protein gp120/metabolism ; Humans ; Membrane Proteins ; Models, Molecular ; Protein Binding ; Protein Conformation ; Protein Multimerization ; Receptors, CXCR4/antagonists & inhibitors/*chemistry/metabolism ; Recombinant Proteins/chemistry ; Spodoptera ; Thiourea/analogs & derivatives/chemistry
    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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    The 2.6 angstrom crystal structure of a human A2A adenosine receptor bound to an antagonist (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-10-04
    Description: The adenosine class of heterotrimeric guanine nucleotide-binding protein (G protein)-coupled receptors (GPCRs) mediates the important role of extracellular adenosine in many physiological processes and is antagonized by caffeine. We have determined the crystal structure of the human A2A adenosine receptor, in complex with a high-affinity subtype-selective antagonist, ZM241385, to 2.6 angstrom resolution. Four disulfide bridges in the extracellular domain, combined with a subtle repacking of the transmembrane helices relative to the adrenergic and rhodopsin receptor structures, define a pocket distinct from that of other structurally determined GPCRs. The arrangement allows for the binding of the antagonist in an extended conformation, perpendicular to the membrane plane. The binding site highlights an integral role for the extracellular loops, together with the helical core, in ligand recognition by this class of GPCRs and suggests a role for ZM241385 in restricting the movement of a tryptophan residue important in the activation mechanism of the class A receptors.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2586971/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2586971/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jaakola, Veli-Pekka -- Griffith, Mark T -- Hanson, Michael A -- Cherezov, Vadim -- Chien, Ellen Y T -- Lane, J Robert -- Ijzerman, Adriaan P -- Stevens, Raymond C -- GM075915/GM/NIGMS NIH HHS/ -- P50 GM073197/GM/NIGMS NIH HHS/ -- P50 GM073197-04/GM/NIGMS NIH HHS/ -- R01 GM089857/GM/NIGMS NIH HHS/ -- U54 GM074961/GM/NIGMS NIH HHS/ -- U54 GM074961-04/GM/NIGMS NIH HHS/ -- Y1-CO-1020/CO/NCI NIH HHS/ -- Y1-GM-1104/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2008 Nov 21;322(5905):1211-7. doi: 10.1126/science.1164772. Epub 2008 Oct 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, The Scripps Research Institute, La Jolla, CA 92037 USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18832607" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine A2 Receptor Antagonists ; Animals ; Binding Sites ; Crystallography, X-Ray ; Humans ; Ligands ; Protein Binding ; Protein Conformation ; Receptor, Adenosine A2A/*chemistry ; Structure-Activity Relationship ; Triazines/chemistry ; Triazoles/chemistry ; Tryptophan/chemistry ; Turkeys
    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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    Structure of the human dopamine D3 receptor in complex with a D2/D3 selective antagonist (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-11-26
    Description: Dopamine modulates movement, cognition, and emotion through activation of dopamine G protein-coupled receptors in the brain. The crystal structure of the human dopamine D3 receptor (D3R) in complex with the small molecule D2R/D3R-specific antagonist eticlopride reveals important features of the ligand binding pocket and extracellular loops. On the intracellular side of the receptor, a locked conformation of the ionic lock and two distinctly different conformations of intracellular loop 2 are observed. Docking of R-22, a D3R-selective antagonist, reveals an extracellular extension of the eticlopride binding site that comprises a second binding pocket for the aryl amide of R-22, which differs between the highly homologous D2R and D3R. This difference provides direction to the design of D3R-selective agents for treating drug abuse and other neuropsychiatric indications.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3058422/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3058422/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chien, Ellen Y T -- Liu, Wei -- Zhao, Qiang -- Katritch, Vsevolod -- Han, Gye Won -- Hanson, Michael A -- Shi, Lei -- Newman, Amy Hauck -- Javitch, Jonathan A -- Cherezov, Vadim -- Stevens, Raymond C -- DA022413/DA/NIDA NIH HHS/ -- DA023694/DA/NIDA NIH HHS/ -- GM075915/GM/NIGMS NIH HHS/ -- K05 DA022413/DA/NIDA NIH HHS/ -- K05 DA022413-05/DA/NIDA NIH HHS/ -- MH54137/MH/NIMH NIH HHS/ -- P50 GM073197/GM/NIGMS NIH HHS/ -- P50 GM073197-07/GM/NIGMS NIH HHS/ -- R00 DA023694/DA/NIDA NIH HHS/ -- R00 DA023694-04/DA/NIDA NIH HHS/ -- R01 GM089857/GM/NIGMS NIH HHS/ -- R01 MH054137/MH/NIMH NIH HHS/ -- R01 MH054137-16/MH/NIMH NIH HHS/ -- R21 RR025336/RR/NCRR NIH HHS/ -- R21 RR025336-01A1/RR/NCRR NIH HHS/ -- U54 GM074961/GM/NIGMS NIH HHS/ -- U54 GM074961-050001/GM/NIGMS NIH HHS/ -- U54 GM094618/GM/NIGMS NIH HHS/ -- U54 GM094618-01/GM/NIGMS NIH HHS/ -- Y1-CO-1020/CO/NCI NIH HHS/ -- Y1-GM-1104/GM/NIGMS NIH HHS/ -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2010 Nov 19;330(6007):1091-5. doi: 10.1126/science.1197410.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21097933" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arginine/chemistry ; Binding Sites ; Cell Line ; Crystallography, X-Ray ; Dopamine Antagonists/*chemistry ; Dopamine D2 Receptor Antagonists ; Humans ; Models, Molecular ; Protein Conformation ; Receptors, Dopamine D3/antagonists & inhibitors/*chemistry ; Recombinant Proteins/chemistry ; Salicylamides/*chemistry ; Spodoptera
    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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