5HYJ

1E6 TCR in Complex with HLA-A02 carrying AQWGPDPAAA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.06 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.216 

Starting Models: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

A "hotspot" for autoimmune T cells in type 1 diabetes.

Stadinski, B.D.Obst, R.Huseby, E.S.

(2016) J Clin Invest 126: 2040-2042

  • DOI: https://doi.org/10.1172/JCI88165
  • Primary Citation of Related Structures:  
    5HYJ

  • PubMed Abstract: 

    The ability of a single T cell antigen receptor (TCR) to cross-react with multiple antigens allows the finite number of T cells within an organism to respond to the compendium of pathogen challenges faced during a lifetime. Effective immune surveillance, however, comes at a price. TCR cross-reactivity can allow molecular mimics to spuriously activate autoimmune T cells; it also underlies T cell rejection of organ transplants and drives graft-versus-host disease. In this issue of the JCI, Cole and colleagues provide insight into how an insulin-reactive T cell cross-reacts with pathogen-derived antigens by focusing on a limited portion of the peptides to provide a hotspot for binding. These findings dovetail with recent studies of alloreactive and autoimmune TCRs and suggest that the biochemical principles that govern conventional protein-protein interactions may allow the specificity and cross-reactivity profiles of T cells to be predicted.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HLA class I histocompatibility antigen, A-2 alpha chain
A, F
276Homo sapiensMutation(s): 0 
Gene Names: HLA-AHLAA
UniProt & NIH Common Fund Data Resources
Find proteins for P04439 (Homo sapiens)
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PHAROS:  P04439
GTEx:  ENSG00000206503 
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UniProt GroupP04439
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Beta-2-microglobulin
B, G
100Homo sapiensMutation(s): 0 
Gene Names: B2MCDABP0092HDCMA22P
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Find proteins for P61769 (Homo sapiens)
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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
ALA-GLN-TRP-GLY-PRO-ASP-PRO-ALA-ALA-ALA
C, H
10Homo sapiensMutation(s): 0 
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Find proteins for P01308 (Homo sapiens)
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PHAROS:  P01308
GTEx:  ENSG00000254647 
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UniProt GroupP01308
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  • Reference Sequence
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Human T-cell Receptor, Class I, Light alpha Chain
D, I
193Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for A0A0B4J271 (Homo sapiens)
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PHAROS:  A0A0B4J271
GTEx:  ENSG00000211794 
Find proteins for P01848 (Homo sapiens)
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PHAROS:  P01848
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UniProt GroupsA0A0B4J271P01848
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  • Reference Sequence
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Human T-cell Receptor, Class I, Heavy beta Chain
E, J
246Homo sapiensMutation(s): 0 
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Find proteins for A0A0B4J2E0 (Homo sapiens)
Explore A0A0B4J2E0 
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GTEx:  ENSG00000276953 
Find proteins for A0A5B9 (Homo sapiens)
Explore A0A5B9 
Go to UniProtKB:  A0A5B9
PHAROS:  A0A5B9
Entity Groups  
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UniProt GroupsA0A0B4J2E0A0A5B9
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.06 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.216 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.44α = 97.29
b = 97.31β = 97.66
c = 121.37γ = 92.73
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-05-04
    Type: Initial release
  • Version 1.1: 2016-05-25
    Changes: Database references
  • Version 1.2: 2016-06-08
    Changes: Database references
  • Version 1.3: 2024-01-10
    Changes: Data collection, Database references, Refinement description