2BVO

Structures of Three HIV-1 HLA-B5703-Peptide Complexes and Identification of Related HLAs Potentially Associated with Long-Term Non-Progression


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 

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This is version 1.3 of the entry. See complete history


Literature

Structures of three HIV-1 HLA-B*5703-peptide complexes and identification of related HLAs potentially associated with long-term nonprogression.

Stewart-Jones, G.B.Gillespie, G.Overton, I.M.Kaul, R.Roche, P.McMichael, A.J.Rowland-Jones, S.Jones, E.Y.

(2005) J Immunol 175: 2459-2468

  • DOI: https://doi.org/10.4049/jimmunol.175.4.2459
  • Primary Citation of Related Structures:  
    2BVO, 2BVP, 2BVQ

  • PubMed Abstract: 

    Long-term nonprogression during acute HIV infection has been strongly associated with HLA-B*5701 or HLA-B*5703. In this study, we present the high resolution crystal structures of HLA-B*5703 complexes with three HIV-1 epitopes: ISPRTLNAW (ISP), KAFSPEVIPMF (KAF-11), and KAFSPEVI (KAF-8). These reveal peptide anchoring at position 2 and their C termini. The different peptide lengths and primary sequences are accommodated by variation in the specific contacts made to the HLA-B*5703, flexibility in water structure, and conformational adjustment of side chains within the peptide-binding groove. The peptides adopt markedly different conformations, and trap variable numbers of water molecules, near a cluster of tyrosine side chains located in the central region of the peptide-binding groove. The KAF-11 epitope completely encompasses the shorter KAF-8 epitope but the peptides are presented in different conformations; the KAF-11 peptide arches out of the peptide-binding groove, exposing a significant main chain surface area. Bioinformatic analysis of the MHC side chains observed to contribute to the peptide anchor specificity, and other specific peptide contacts, reveals HLA alleles associated with long-term nonprogression and a number of related HLA alleles that may share overlapping peptide repertoires with HLA-B*5703 and thus may display a similar capacity for efficient immune control of HIV-1 infection.


  • Organizational Affiliation

    Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HLA CLASS I HISTOCOMPATIBILITY ANTIGEN, B-57 ALPHA CHAIN276Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P01889 (Homo sapiens)
Explore P01889 
Go to UniProtKB:  P01889
PHAROS:  P01889
GTEx:  ENSG00000234745 
Entity Groups  
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UniProt GroupP01889
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
BETA-2-MICROGLOBULIN100Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P61769 (Homo sapiens)
Explore P61769 
Go to UniProtKB:  P61769
PHAROS:  P61769
GTEx:  ENSG00000166710 
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UniProt GroupP61769
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  • Reference Sequence

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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
GAG PROTEIN11Human immunodeficiency virus 1Mutation(s): 0 
UniProt
Find proteins for Q70A61 (Human immunodeficiency virus 1)
Explore Q70A61 
Go to UniProtKB:  Q70A61
Entity Groups  
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UniProt GroupQ70A61
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.589α = 90
b = 81.769β = 90
c = 110.137γ = 90
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-09-13
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-10-09
    Changes: Data collection, Database references, Other