1LCX

NMR structure of HIV-1 gp41 659-671 13mer peptide


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 25 
  • Selection Criteria: structures with acceptable covalent geometry,structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A Monomeric 3(10)-Helix Is Formed in Water by a 13-Residue Peptide Representing the Neutralizing Determinant of HIV-1 on gp41.

Biron, Z.Khare, S.Samson, A.O.Hayek, Y.Naider, F.Anglister, J.

(2002) Biochemistry 41: 12687-12696

  • DOI: 10.1021/bi026261y
  • Primary Citation of Related Structures:  
    1LB0, 1LCX

  • PubMed Abstract: 
  • The peptide gp41(659-671) (ELLELDKWASLWN) comprises the entire epitope for one of the three known antibodies capable of neutralizing a broad spectrum of primary HIV-1 isolates and is the only such epitope that is sequential. Here we present the NMR structure of gp41(659-671) in water ...

    The peptide gp41(659-671) (ELLELDKWASLWN) comprises the entire epitope for one of the three known antibodies capable of neutralizing a broad spectrum of primary HIV-1 isolates and is the only such epitope that is sequential. Here we present the NMR structure of gp41(659-671) in water. This peptide forms a monomeric 3(10)-helix stabilized by i,i+3 side chain-side chain interactions favored by its primary sequence. In this conformation the peptide presents an exposed surface, which is mostly hydrophobic and consists of conserved HIV-1 residues. The presence of the 3(10)-helix is confirmed by its characteristic CD pattern. Studies of the 3(10)-helix have been hampered by the absence of a model peptide adopting this conformation. gp41(659-671) can serve as such a model to investigate the spectral characteristics of the 3(10)-helix, the factors that influence its stability, and the propensity of different amino acids to form a 3(10)-helix. The observation that the 3(10)-helical conformation is highly populated in the peptide gp41(659-671) indicates that the corresponding segment in the cognate protein is an autonomous folding unit. As such, it is very likely that the helical conformation is maintained in gp41 throughout the different tertiary structures of the envelope protein that form during the process of viral fusion. However, the exposure of the gp41(659-671) segment may vary, leading to changes in the reactivity of anti-gp41 antibodies in the different stages of viral fusion. Since gp41(659-671) is an autonomous folding unit, peptide immunogens consisting of the complete gp41(659-671) sequence are likely to induce antibodies highly cross-reactive with HIV-1.


    Organizational Affiliation

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



Macromolecules
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GP41A13N/AMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for P31872 (Human immunodeficiency virus type 1 group M subtype B (isolate WMJ1))
Explore P31872 
Go to UniProtKB:  P31872
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 25 
  • Selection Criteria: structures with acceptable covalent geometry,structures with the lowest energy 
  • OLDERADO: 1LCX Olderado

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-12-04
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance