1gc1

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{{STRUCTURE_1gc1| PDB=1gc1 | SCENE= }}
{{STRUCTURE_1gc1| PDB=1gc1 | SCENE= }}
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'''HIV-1 GP120 CORE COMPLEXED WITH CD4 AND A NEUTRALIZING HUMAN ANTIBODY'''
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===HIV-1 GP120 CORE COMPLEXED WITH CD4 AND A NEUTRALIZING HUMAN ANTIBODY===
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==Overview==
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The entry of human immunodeficiency virus (HIV) into cells requires the sequential interaction of the viral exterior envelope glycoprotein, gp120, with the CD4 glycoprotein and a chemokine receptor on the cell surface. These interactions initiate a fusion of the viral and cellular membranes. Although gp120 can elicit virus-neutralizing antibodies, HIV eludes the immune system. We have solved the X-ray crystal structure at 2.5 A resolution of an HIV-1 gp120 core complexed with a two-domain fragment of human CD4 and an antigen-binding fragment of a neutralizing antibody that blocks chemokine-receptor binding. The structure reveals a cavity-laden CD4-gp120 interface, a conserved binding site for the chemokine receptor, evidence for a conformational change upon CD4 binding, the nature of a CD4-induced antibody epitope, and specific mechanisms for immune evasion. Our results provide a framework for understanding the complex biology of HIV entry into cells and should guide efforts to intervene.
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(as it appears on PubMed at http://www.pubmed.gov), where 9641677 is the PubMed ID number.
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{{ABSTRACT_PUBMED_9641677}}
==About this Structure==
==About this Structure==
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[[Category: Hiv-1 exterior envelope gp120]]
[[Category: Hiv-1 exterior envelope gp120]]
[[Category: T-cell surface glycoprotein cd4]]
[[Category: T-cell surface glycoprotein cd4]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 17:23:51 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 05:03:26 2008''

Revision as of 02:03, 1 July 2008

Image:1gc1.png

Template:STRUCTURE 1gc1

HIV-1 GP120 CORE COMPLEXED WITH CD4 AND A NEUTRALIZING HUMAN ANTIBODY

Template:ABSTRACT PUBMED 9641677

About this Structure

1GC1 is a Protein complex structure of sequences from Homo sapiens and Human immunodeficiency virus 1. Full crystallographic information is available from OCA.

Reference

Structure of an HIV gp120 envelope glycoprotein in complex with the CD4 receptor and a neutralizing human antibody., Kwong PD, Wyatt R, Robinson J, Sweet RW, Sodroski J, Hendrickson WA, Nature. 1998 Jun 18;393(6686):648-59. PMID:9641677

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