3MV7

Crystal Structure of the TK3 TCR in complex with HLA-B*3501/HPVG


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.228 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Allelic polymorphism in the T cell receptor and its impact on immune responses

Gras, S.Chen, Z.Miles, J.J.Liu, Y.C.Bell, M.J.Sullivan, L.C.Kjer-Nielsen, L.Brennan, R.M.Burrows, J.M.Neller, M.A.Khanna, R.Purcell, A.W.Brooks, A.G.McCluskey, J.Rossjohn, J.Burrows, S.R.

(2010) J Exp Med 207: 1555-1567

  • DOI: https://doi.org/10.1084/jem.20100603
  • Primary Citation of Related Structures:  
    3MV7, 3MV8, 3MV9

  • PubMed Abstract: 

    In comparison to human leukocyte antigen (HLA) polymorphism, the impact of allelic sequence variation within T cell receptor (TCR) loci is much less understood. Particular TCR loci have been associated with autoimmunity, but the molecular basis for this phenomenon is undefined. We examined the T cell response to an HLA-B*3501-restricted epitope (HPVGEADYFEY) from Epstein-Barr virus (EBV), which is frequently dominated by a TRBV9*01(+) public TCR (TK3). However, the common allelic variant TRBV9*02, which differs by a single amino acid near the CDR2beta loop (Gln55-->His55), was never used in this response. The structure of the TK3 TCR, its allelic variant, and a nonnaturally occurring mutant (Gln55-->Ala55) in complex with HLA-B*3501(HPVGEADYFEY) revealed that the Gln55-->His55 polymorphism affected the charge complementarity at the TCR-peptide-MHC interface, resulting in reduced functional recognition of the cognate and naturally occurring variants of this EBV peptide. Thus, polymorphism in the TCR loci may contribute toward variability in immune responses and the outcome of infection.


  • Organizational Affiliation

    The Protein Crystallography Unit, Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria 3800, Australia.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HLA class I histocompatibility antigen, B-35 alpha chain276Homo sapiensMutation(s): 0 
Gene Names: HLA-BHLAB
UniProt & NIH Common Fund Data Resources
Find proteins for P01889 (Homo sapiens)
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Go to UniProtKB:  P01889
PHAROS:  P01889
GTEx:  ENSG00000234745 
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UniProt GroupP01889
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Beta-2-microglobulin99Homo sapiensMutation(s): 0 
Gene Names: B2MCDABP0092HDCMA22P
UniProt & NIH Common Fund Data Resources
Find proteins for P61769 (Homo sapiens)
Explore P61769 
Go to UniProtKB:  P61769
PHAROS:  P61769
GTEx:  ENSG00000166710 
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UniProt GroupP61769
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  • Reference Sequence

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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
HPVG peptide from Epstein-Barr nuclear antigen 111N/AMutation(s): 0 
UniProt
Find proteins for P03211 (Epstein-Barr virus (strain B95-8))
Explore P03211 
Go to UniProtKB:  P03211
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UniProt GroupP03211
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  • Reference Sequence
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
alpha chain of the TK3 TCR200Homo sapiensMutation(s): 0 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
beta chain of the TK3 TCR241Homo sapiensMutation(s): 0 
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
F [auth E]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.228 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.86α = 94.64
b = 62.24β = 103.92
c = 92.56γ = 109.31
Software Package:
Software NamePurpose
XSCALEdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

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Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2010-06-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2011-07-20
    Changes: Database references