6AT6

Crystal structure of the KFJ5 TCR


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.42 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Divergent T-cell receptor recognition modes of a HLA-I restricted extended tumour-associated peptide.

Chan, K.F.Gully, B.S.Gras, S.Beringer, D.X.Kjer-Nielsen, L.Cebon, J.McCluskey, J.Chen, W.Rossjohn, J.

(2018) Nat Commun 9: 1026-1026

  • DOI: 10.1038/s41467-018-03321-w
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Human leukocyte antigen (HLA)-I molecules generally bind short peptides (8-10 amino acids), although extended HLA-I restricted peptides (>10 amino acids) can be presented to T cells. However, the function of such extended HLA-I epitopes in tumour imm ...

    Human leukocyte antigen (HLA)-I molecules generally bind short peptides (8-10 amino acids), although extended HLA-I restricted peptides (>10 amino acids) can be presented to T cells. However, the function of such extended HLA-I epitopes in tumour immunity, and how they would be recognised by T-cell receptors (TCR) remains unclear. Here we show that the structures of two distinct TCRs (TRAV4 + TRAJ21 + -TRBV28 + TRBJ2-3 + and TRAV4 + TRAJ8 + -TRBV9 + TRBJ2-1 + ), originating from a polyclonal T-cell repertoire, bind to HLA-B*07:02, presenting a 13-amino-acid-long tumour-associated peptide, NY-ESO-1 60-72 . Comparison of the structures reveals that the two TCRs differentially binds NY-ESO-1 60-72 -HLA-B*07:02 complex, and induces differing extent of conformational change of the NY-ESO-1 60-72 epitope. Accordingly, polyclonal TCR usage towards an extended HLA-I restricted tumour epitope translates to differing TCR recognition modes, whereby extensive flexibility at the TCR-pHLA-I interface engenders recognition.


    Organizational Affiliation

    Institute of Infection and Immunity, Cardiff University School of Medicine, Heath Park, Cardiff, CF14 4XN, UK. jamie.rossjohn@monash.edu.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
T-cell receptor beta variable 28, Human nkt tcr beta chain chimera
B
245Homo sapiensMutation(s): 0 
Gene Names: TCRBV3S1TRBV28
Find proteins for A0A5B6 (Homo sapiens)
Go to UniProtKB:  A0A5B6
NIH Common Fund Data Resources
PHAROS  A0A5B6
Find proteins for K7N5M4 (Homo sapiens)
Go to UniProtKB:  K7N5M4

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
T-cell receptor alpha variable 4, T-cell receptor, sp3.4 alpha chain chimera
A
208Homo sapiensMutation(s): 0 
Gene Names: TRAV4
Find proteins for K7N5N2 (Homo sapiens)
Go to UniProtKB:  K7N5N2
Find proteins for A0A0B4J268 (Homo sapiens)
Go to UniProtKB:  A0A0B4J268
NIH Common Fund Data Resources
PHAROS  A0A0B4J268
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.42 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.199 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.904α = 90
b = 73.36β = 90
c = 123.042γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2018-02-28
    Type: Initial release
  • Version 1.1: 2018-04-04
    Changes: Data collection, Database references