1q1j: Difference between revisions

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{{STRUCTURE_1q1j|  PDB=1q1j  |  SCENE=  }}  
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'''Crystal Structure Analysis of anti-HIV-1 Fab 447-52D in complex with V3 peptide'''
===Crystal Structure Analysis of anti-HIV-1 Fab 447-52D in complex with V3 peptide===




==Overview==
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447-52D is a human monoclonal antibody isolated from a heterohybridoma derived from an HIV-1-infected individual. This antibody recognizes the hypervariable gp120 V3 loop, and neutralizes both X4 and R5 primary isolates, making it one of the most effective anti-V3 antibodies characterized to date. The crystal structure of the 447-52D Fab in complex with a 16-mer V3 peptide at 2.5 A resolution reveals that the peptide beta hairpin forms a three-stranded mixed beta sheet with complementarity determining region (CDR) H3, with most of the V3 side chains exposed to solvent. Sequence specificity is conferred through interaction of the type-II turn (residues GPGR) at the apex of the V3 hairpin with the base of CDR H3. This novel mode of peptide-antibody recognition enables the antibody to bind to many different V3 sequences where only the GPxR core epitope is absolutely required.
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==About this Structure==
==About this Structure==
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[[Category: Hiv-1]]
[[Category: Hiv-1]]
[[Category: V3 loop]]
[[Category: V3 loop]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 05:45:09 2008''
 
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Revision as of 23:44, 27 July 2008

File:1q1j.png

Template:STRUCTURE 1q1j

Crystal Structure Analysis of anti-HIV-1 Fab 447-52D in complex with V3 peptideCrystal Structure Analysis of anti-HIV-1 Fab 447-52D in complex with V3 peptide

Template:ABSTRACT PUBMED 14962380

About this StructureAbout this Structure

Full crystallographic information is available from OCA.

ReferenceReference

Structural rationale for the broad neutralization of HIV-1 by human monoclonal antibody 447-52D., Stanfield RL, Gorny MK, Williams C, Zolla-Pazner S, Wilson IA, Structure. 2004 Feb;12(2):193-204. PMID:14962380

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