1LB0

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

  • Classification: VIRAL PROTEIN
  • Mutation(s): No 

  • Deposited: 2002-04-01 Released: 2002-12-04 
  • Deposition Author(s): Biron, Z.

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 

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This is version 1.3 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

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GP41A13N/AMutation(s): 0 
UniProt
Find proteins for P31872 (Human immunodeficiency virus type 1 group M subtype B (isolate WMJ1))
Explore P31872 
Go to UniProtKB:  P31872
Entity Groups  
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UniProt GroupP31872
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 

Structure Validation

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Entry History 

Deposition Data

  • Released Date: 2002-12-04 
  • Deposition Author(s): Biron, Z.

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
  • Version 1.3: 2022-02-23
    Changes: Data collection, Database references, Derived calculations