5WMR

Crystal Structure of HLA-B8 in complex with QIK, a CMV peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.58 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.193 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Inability To Detect Cross-Reactive Memory T Cells Challenges the Frequency of Heterologous Immunity among Common Viruses.

Rowntree, L.C.Nguyen, T.H.O.Halim, H.Purcell, A.W.Rossjohn, J.Gras, S.Kotsimbos, T.C.Mifsud, N.A.

(2018) J Immunol 200: 3993-4003

  • DOI: 10.4049/jimmunol.1800010
  • Primary Citation of Related Structures:  
    5WMN, 5WMP, 5WMO, 5WMR, 5WMQ

  • PubMed Abstract: 
  • Human memory T cells that cross-react with epitopes from unrelated viruses can potentially modulate immune responses to subsequent infections by a phenomenon termed heterologous immunity. However, it is unclear whether similarities in structure rathe ...

    Human memory T cells that cross-react with epitopes from unrelated viruses can potentially modulate immune responses to subsequent infections by a phenomenon termed heterologous immunity. However, it is unclear whether similarities in structure rather than sequence underpin heterologous T cell cross-reactivity. In this study, we aimed to explore the mechanism of heterologous immunity involving immunodominant epitopes derived from common viruses restricted to high-frequency HLA allotypes (HLA-A*02:01, -B*07:02, and -B*08:01). We examined EBV-specific memory T cells for their ability to cross-react with CMV or influenza A virus-derived epitopes. Following T cell immunoassays to determine phenotype and function, complemented with biophysical and structural investigations of peptide/HLA complexes, we did not detect cross-reactivity of EBV-specific memory T cells toward either CMV or influenza A virus epitopes presented by any of the selected HLA allomorphs. Thus, despite the ubiquitous nature of these human viruses and the dominant immune response directed toward the selected epitopes, heterologous virus-specific T cell cross-reactivity was not detected. This suggests that either heterologous immunity is not as common as previously reported, or that it requires a very specific biological context to develop and be clinically relevant.


    Organizational Affiliation

    Infection and Immunity Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria 3800, Australia.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HLA class I histocompatibility antigen, B-8 alpha chainA276Homo sapiensMutation(s): 0 
Gene Names: HLA-BHLAB
Find proteins for P01889 (Homo sapiens)
Explore P01889 
Go to UniProtKB:  P01889
NIH Common Fund Data Resources
PHAROS  P01889
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-2-microglobulinB100Homo sapiensMutation(s): 0 
Gene Names: B2MCDABP0092HDCMA22P
Find proteins for P61769 (Homo sapiens)
Explore P61769 
Go to UniProtKB:  P61769
NIH Common Fund Data Resources
PHAROS  P61769
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
QIK peptide from CMVC9CytomegalovirusMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.58 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.193 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.637α = 90
b = 81.52β = 90
c = 110.9γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
PHASERphasing
BUSTERrefinement
PDB_EXTRACTdata extraction
XDSdata processing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2017-07-31 
  • Released Date: 2018-06-06 
  • Deposition Author(s): Gras, S., Rossjohn, J.

Revision History 

  • Version 1.0: 2018-06-06
    Type: Initial release
  • Version 1.1: 2018-06-13
    Changes: Data collection, Database references
  • Version 1.2: 2020-02-26
    Changes: Data collection