5HHM

Crystal Structure of the JM22 TCR in complex with HLA-A*0201 in complex with M1-F5L


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.220 

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 U S A 113: 4440-4445

  • DOI: 10.1073/pnas.1603106113
  • Primary Citation of Related Structures:  
    5HHN, 5HHM, 5HHP, 5HHO, 5HHQ

  • 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; pcd@unimelb.edu.au stephanie.gras@monash.edu kkedz@unimelb.edu.au.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HLA class I histocompatibility antigen, A-2 alpha chainAF276Homo sapiensMutation(s): 0 
Gene Names: HLA-AHLAA
Find proteins for P04439 (Homo sapiens)
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PHAROS  P04439
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-2-microglobulinBG100Homo sapiensMutation(s): 0 
Gene Names: B2MCDABP0092HDCMA22P
Find proteins for P61769 (Homo sapiens)
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PHAROS  P61769
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
M1-F5L, GILGLVFTLCH9synthetic constructMutation(s): 0 
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
JM22 TCR alpha chainDI200Homo sapiensMutation(s): 0 
Gene Names: TRAV27TRACTCRA
Find proteins for P01848 (Homo sapiens)
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PHAROS  P01848
Find proteins for A0A087WT01 (Homo sapiens)
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PHAROS  A0A087WT01
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  • Reference Sequence
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
JM22 TCR beta chainEJ241Homo sapiensMutation(s): 0 
Gene Names: TRBC2TCRBC2TRBV19
Find proteins for A0A075B6N1 (Homo sapiens)
Explore A0A075B6N1 
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PHAROS  A0A075B6N1
Find proteins for A0A5B9 (Homo sapiens)
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PHAROS  A0A5B9
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.220 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 242.876α = 90
b = 47.296β = 115.49
c = 185.945γ = 90
Software Package:
Software NamePurpose
BUSTER-TNTrefinement
SCALAdata scaling
PHASERphasing
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History 

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