5WMQ

Crystal Structure of HLA-B8 in complex with ELR, an Influenza A virus peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.1 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:  

  • 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

    Department of Medicine, Monash University, Central Clinical School, The Alfred Hospital, Melbourne, Victoria 3004, Australia; nicole.mifsud@monash.edu.,Department of Medicine, Monash University, Central Clinical School, The Alfred Hospital, Melbourne, Victoria 3004, Australia.,Department of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Parkville, Victoria 3010, Australia.,Institute of Infection and Immunity, Cardiff University School of Medicine, Heath Park, Cardiff CF14 4XN, United Kingdom.,Department of Allergy, Immunology, and Respiratory Medicine, The Alfred Hospital, Melbourne, Victoria 3004, Australia.,Infection and Immunity Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria 3800, Australia.,Australian Research Council Centre of Excellence for Advanced Molecular Imaging, Monash University, Clayton, Victoria 3800, Australia; and.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HLA class I histocompatibility antigen, B-8 alpha chain
A
276Homo sapiensMutation(s): 0 
Gene Names: HLA-B (HLAB)
Find proteins for P01889 (Homo sapiens)
Go to Gene View: HLA-B
Go to UniProtKB:  P01889
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Beta-2-microglobulin
B
100Homo sapiensMutation(s): 0 
Gene Names: B2M
Find proteins for P61769 (Homo sapiens)
Go to Gene View: B2M
Go to UniProtKB:  P61769
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
ELR peptide from IAV
C
9N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.199 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 89.529α = 90.00
b = 38.553β = 101.78
c = 128.095γ = 90.00
Software Package:
Software NamePurpose
Aimlessdata scaling
BUSTERrefinement
PHASERphasing
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



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
    Type: Data collection, Database references