1KGC

Immune Receptor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.211 

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This is version 1.2 of the entry. See complete history


Literature

The 1.5 A crystal structure of a highly selected antiviral T cell receptor provides evidence for a structural basis of immunodominance

Kjer-Nielsen, L.Clements, C.S.Brooks, A.G.Purcell, A.W.McCluskey, J.Rossjohn, J.

(2002) Structure 10: 1521-1532

  • DOI: 10.1016/s0969-2126(02)00878-x
  • Primary Citation of Related Structures:  
    1KGC

  • PubMed Abstract: 
  • Despite a potential repertoire of >10(15) alphabeta T cell receptors (TcR), the HLA B8-restricted cytolytic T cell response to a latent antigen of Epstein-Barr virus (EBV) is strikingly limited in the TcR sequences that are selected. Even in unrelated individuals this response is dominated by a single highly restricted TcR clonotype that selects identical combinations of hypervariable Valpha, Vbeta, D, J, and N region genes ...

    Despite a potential repertoire of >10(15) alphabeta T cell receptors (TcR), the HLA B8-restricted cytolytic T cell response to a latent antigen of Epstein-Barr virus (EBV) is strikingly limited in the TcR sequences that are selected. Even in unrelated individuals this response is dominated by a single highly restricted TcR clonotype that selects identical combinations of hypervariable Valpha, Vbeta, D, J, and N region genes. We have determined the 1.5 A crystal structure of this "public" TcR, revealing that five of the six hypervariable loops adopt novel conformations providing a unique combining site that contains a deep pocket predicted to overlay the HLA B8-peptide complex. The findings suggest a structural basis for the immunodominance of this clonotype in the immune response to EBV.


    Organizational Affiliation

    Department of Microbiology and Immunology, University of Melbourne, Parkville, Victoria, Australia.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
T-cell receptor alpha chainA [auth D]206Homo sapiensMutation(s): 0 
Gene Names: TRACTCRA
UniProt & NIH Common Fund Data Resources
Find proteins for P01848 (Homo sapiens)
Explore P01848 
Go to UniProtKB:  P01848
PHAROS:  P01848
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
T-cell receptor beta chainB [auth E]242Homo sapiensMutation(s): 0 
Gene Names: TRBC1
UniProt
Find proteins for P01850 (Homo sapiens)
Explore P01850 
Go to UniProtKB:  P01850
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.211 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.796α = 90
b = 68.11β = 90
c = 160.497γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-12-11
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance