NMR structure of a V3 (MN isolate) peptide bound to 447-52D, a human HIV-1 neutralizing antibody

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 29 
  • Selection Criteria: structures with the lowest energy 

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This is version 1.3 of the entry. See complete history


Alternative Conformations of HIV-1 V3 Loops Mimic beta Hairpins in Chemokines, Suggesting a Mechanism for Coreceptor Selectivity.

Sharon, M.Kessler, N.Levy, R.Zolla-Pazner, S.Gorlach, M.Anglister, J.

(2003) Structure 11: 225-236

  • DOI: https://doi.org/10.1016/s0969-2126(03)00011-x
  • Primary Citation of Related Structures:  
    1NIZ, 1NJ0

  • PubMed Abstract: 

    The V3 loop of the HIV-1 envelope glycoprotein gp120 is involved in binding to the CCR5 and CXCR4 coreceptors. The structure of an HIV-1(MN) V3 peptide bound to the Fv of the broadly neutralizing human monoclonal antibody 447-52D was solved by NMR and found to be a beta hairpin. This structure of V3(MN) was found to have conformation and sequence similarities to beta hairpins in CD8 and CCR5 ligands MIP-1alpha, MIP-1beta, and RANTES and differed from the beta hairpin of a V3(IIIB) peptide bound to the strain-specific murine anti-gp120(IIIB) antibody 0.5beta. In contrast to the structure of the bound V3(MN) peptide, the V3(IIIB) peptide resembles a beta hairpin in SDF-1, a CXCR4 ligand. These data suggest that the 447-52D-bound V3(MN) and the 0.5beta-bound V3(IIIB) structures represent alternative V3 conformations responsible for selective interactions with CCR5 and CXCR4, respectively.

  • Organizational Affiliation

    Department of Structural Biology, The Weizmann Institute of Science, 76100, Rehovot, Israel.


Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Exterior membrane glycoprotein(GP120)16Human immunodeficiency virus 1Mutation(s): 0 
Gene Names: ENV
Find proteins for P05877 (Human immunodeficiency virus type 1 group M subtype B (isolate MN))
Explore P05877 
Go to UniProtKB:  P05877
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP05877
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 29 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-02-25
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-02-23
    Changes: Database references, Derived calculations