5HHO

Crystal Structure of the JM22 TCR in complex with HLA-A*0201 in complex with M1-G4E


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.236 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Molecular basis for universal HLA-A*0201-restricted CD8+ T-cell immunity against influenza viruses.

Valkenburg, S.A.Josephs, T.M.Clemens, E.B.Grant, E.J.Nguyen, T.H.Wang, G.C.Price, D.A.Miller, A.Tong, S.Y.Thomas, P.G.Doherty, P.C.Rossjohn, J.Gras, S.Kedzierska, K.

(2016) Proc.Natl.Acad.Sci.USA 113: 4440-4445

  • DOI: 10.1073/pnas.1603106113
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Memory CD8(+)T lymphocytes (CTLs) specific for antigenic peptides derived from internal viral proteins confer broad protection against distinct strains of influenza A virus (IAV). However, immune efficacy can be undermined by the emergence of escape ...

    Memory CD8(+)T lymphocytes (CTLs) specific for antigenic peptides derived from internal viral proteins confer broad protection against distinct strains of influenza A virus (IAV). However, immune efficacy can be undermined by the emergence of escape mutants. To determine how T-cell receptor (TCR) composition relates to IAV epitope variability, we used ex vivo peptide-HLA tetramer enrichment and single-cell multiplex analysis to compare TCRs targeted to the largely conserved HLA-A*0201-M158and the hypervariable HLA-B*3501-NP418antigens. The TCRαβs for HLA-B*3501-NP418 (+)CTLs varied among individuals and across IAV strains, indicating that a range of mutated peptides will prime different NP418-specific CTL sets. Conversely, a dominant public TRAV27/TRBV19(+)TCRαβ was selected in HLA-A*0201(+)donors responding to M158 This public TCR cross-recognized naturally occurring M158variants complexed with HLA-A*0201. Ternary structures showed that induced-fit molecular mimicry underpins TRAV27/TRBV19(+)TCR specificity for the WT and mutant M158peptides, suggesting the possibility of universal CTL immunity in HLA-A*0201(+)individuals. Combined with the high population frequency of HLA-A*0201, these data potentially explain the relative conservation of M158 Moreover, our results suggest that vaccination strategies aimed at generating broad protection should incorporate variant peptides to elicit cross-reactive responses against other specificities, especially those that may be relatively infrequent among IAV-primed memory CTLs.


    Organizational Affiliation

    Department of Microbiology and Immunology, University of Melbourne, at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia;




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HLA class I histocompatibility antigen, A-2 alpha chain
A
276Homo sapiensMutation(s): 0 
Gene Names: HLA-A (HLAA)
Find proteins for P01892 (Homo sapiens)
Go to Gene View: HLA-A
Go to UniProtKB:  P01892
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
JM22 TCR alpha chain
D
199Homo sapiensMutation(s): 0 
Gene Names: TRAC (TCRA), TRAV27
Find proteins for P01848 (Homo sapiens)
Go to UniProtKB:  P01848
Find proteins for A0A087WT01 (Homo sapiens)
Go to UniProtKB:  A0A087WT01
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
JM22 TCR beta chain
E
241Homo sapiensMutation(s): 0 
Gene Names: TRBC2 (TCRBC2), TRBV19
Find proteins for A0A5B9 (Homo sapiens)
Go to UniProtKB:  A0A5B9
Find proteins for A0A075B6N1 (Homo sapiens)
Go to UniProtKB:  A0A075B6N1
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
M1-G4E, GILEFVFTL
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: 2.95 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.236 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 233.657α = 90.00
b = 49.033β = 115.95
c = 113.040γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
SCALAdata scaling
PHENIXrefinement
XDSdata reduction
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-03-23
    Type: Initial release
  • Version 1.1: 2016-03-30
    Type: Database references
  • Version 1.2: 2016-04-13
    Type: Database references
  • Version 1.3: 2016-05-04
    Type: Database references