4F7T

Crystal Structure of HLA-A*2402 Complexed with a Newly Identified Peptide from 2009 H1N1 PB1 (498-505)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.196 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Cross-Allele Cytotoxic T Lymphocyte Responses against 2009 Pandemic H1N1 Influenza A Virus among HLA-A24 and HLA-A3 Supertype-Positive Individuals.

Liu, J.Zhang, S.Tan, S.Yi, Y.Wu, B.Cao, B.Zhu, F.Wang, C.Wang, H.Qi, J.Gao, G.F.

(2012) J.Virol. 86: 13281-13294

  • DOI: 10.1128/JVI.01841-12
  • Primary Citation of Related Structures:  4F7M, 4F7P

  • PubMed Abstract: 
  • Lack of a universal vaccine against all serotypes of influenza A viruses and recent progress on T cell-related vaccines against influenza A virus illuminate the important role of human leukocyte antigen (HLA)-restricted cytotoxic T lymphocytes (CTLs) ...

    Lack of a universal vaccine against all serotypes of influenza A viruses and recent progress on T cell-related vaccines against influenza A virus illuminate the important role of human leukocyte antigen (HLA)-restricted cytotoxic T lymphocytes (CTLs) in anti-influenza virus immunity. However, the diverse HLA alleles among humans complicate virus-specific cellular immunity research, and elucidation of cross-HLA allele T cell responses to influenza virus specificity requires further detailed work. An ideal CTL epitope-based vaccine would cover a broad spectrum of epitope antigens presented by most, if not all, of the HLAs. Here, we evaluated the 2009 pandemic influenza A (H1N1) virus-specific T cell responses among the HLA-A24(+) population using a rationally designed peptide pool during the 2009 pandemic. Unexpectedly, cross-HLA allele T cell responses against the influenza A virus peptides were detected among both HLA-A11(+) and HLA-A24(+) donors. Furthermore, we found cross-responses in the entire HLA-A3 supertype population (including HLA-A11, -A31, -A33, and -A30). The cross-allele antigenic peptides within the peptide pool were identified and characterized, and the crystal structures of the major histocompatibility complex (MHC)-peptide complexes were determined. The subsequent HLA-A24-defined cross-allele peptides recognized by the HLA-A11(+) population were shown to mildly bind to the HLA-A*1101 molecule. Together with the structural models, these results partially explain the cross-allele responses. Our findings elucidate the promiscuity of the cross-allele T cell responses against influenza A viruses and are beneficial for the development of a T cell epitope-based vaccine applied in a broader population.


    Organizational Affiliation

    CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HLA class I histocompatibility antigen, A-24 alpha chain
A, D
275Homo sapiensGene Names: HLA-A (HLAA)
Find proteins for P05534 (Homo sapiens)
Go to Gene View: HLA-A
Go to UniProtKB:  P05534
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Beta-2-microglobulin
B, E
100Homo sapiensGene Names: B2M
Find proteins for P61769 (Homo sapiens)
Go to Gene View: B2M
Go to UniProtKB:  P61769
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
RNA-directed RNA polymerase catalytic subunit
C, F
8Influenza A virus H3N2Gene Names: PB1
EC: 2.7.7.48
Find proteins for Q9YXL6 (Influenza A virus H3N2)
Go to UniProtKB:  Q9YXL6
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.196 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 52.838α = 97.70
b = 66.583β = 101.03
c = 70.362γ = 111.84
Software Package:
Software NamePurpose
PHENIXrefinement
AMoREphasing
HKL-2000data scaling
CrystalCleardata collection
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-10-10
    Type: Initial release
  • Version 1.1: 2012-12-05
    Type: Database references