6VQO

T cell receptor-p53-HLA-A2 complex

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.164 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history. 


Literature

Structural basis for oligoclonal T cell recognition of a shared p53 cancer neoantigen.

Wu, D., Gallagher, D.T., Gowthaman, R., Pierce, B.G., Mariuzza, R.A.

(2020) Nat Commun 11: 2908-2908

  • DOI: 10.1038/s41467-020-16755-y
  • Primary Citation of Related Structures:  
    6VQO, 6VR1, 6VR5, 6VRM, 6VRN, 6VTC, 6VTH

  • PubMed Abstract: 

    • Adoptive cell therapy (ACT) with tumor-specific T cells can mediate cancer regression. The main target of tumor-specific T cells are neoantigens arising from mutations in self-proteins. Although the majority of cancer neoantigens are unique to each patient, and therefore not broadly useful for ACT, some are shared ...

    Adoptive cell therapy (ACT) with tumor-specific T cells can mediate cancer regression. The main target of tumor-specific T cells are neoantigens arising from mutations in self-proteins. Although the majority of cancer neoantigens are unique to each patient, and therefore not broadly useful for ACT, some are shared. We studied oligoclonal T-cell receptors (TCRs) that recognize a shared neoepitope arising from a driver mutation in the p53 oncogene (p53R175H) presented by HLA-A2. Here we report structures of wild-type and mutant p53-HLA-A2 ligands, as well as structures of three tumor-specific TCRs bound to p53R175H-HLA-A2. These structures reveal how a driver mutation in p53 rendered a self-peptide visible to T cells. The TCRs employ structurally distinct strategies that are highly focused on the mutation to discriminate between mutant and wild-type p53. The TCR-p53R175H-HLA-A2 complexes provide a framework for designing TCRs to improve potency for ACT without sacrificing specificity.

    Organizational Affiliation: 

    Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD, 20742, USA. rmariuzz@umd.edu.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MHC class I antigenA,
E [auth F]		293Homo sapiensMutation(s): 0 
Gene Names: HLA-A
UniProt
Find proteins for A0A140T913 (Homo sapiens)
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Go to UniProtKB:  A0A140T913
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UniProt GroupA0A140T913
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-2-microglobulinB,
F [auth G]		100Homo sapiensMutation(s): 0 
Gene Names: B2M, CDABP0092, HDCMA22P
UniProt & NIH Common Fund Data Resources
Find proteins for P61769 (Homo sapiens)
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PHAROS:  P61769
GTEx:  ENSG00000166710 
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UniProt GroupP61769
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
T-cell receptor 1a2, alfa chainC [auth D],
G [auth H]		208Homo sapiensMutation(s): 0 
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
TCR receptor 1a2, beta chainD [auth E],
H [auth J]		244Homo sapiensMutation(s): 0 
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
peptide from p53 tumor suppressorI [auth P],
J [auth Q]		9Homo sapiensMutation(s): 0 
Gene Names: TP53, P53
UniProt & NIH Common Fund Data Resources
Find proteins for P04637 (Homo sapiens)
Explore P04637 
Go to UniProtKB:  P04637
PHAROS:  P04637
GTEx:  ENSG00000141510 
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UniProt GroupP04637
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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.164 
  • Space Group: P 31
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 118.13α = 90
b = 118.13β = 90
c = 153.129γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM126299

Revision History  (Full details and data files)

  • Version 1.0: 2020-06-17
    Type: Initial release
  • Version 1.1: 2020-06-24
    Changes: Database references