2Z31

Crystal structure of immune receptor complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.235 

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This is version 1.1 of the entry. See complete history


Literature

Structural evidence for a germline-encoded T cell receptor-major histocompatibility complex interaction 'codon'

Feng, D.Bond, C.J.Ely, L.K.Maynard, J.Garcia, K.C.

(2007) Nat Immunol 8: 975-983

  • DOI: 10.1038/ni1502
  • Primary Citation of Related Structures:  
    2PXY, 2Z35, 2Z31

  • PubMed Abstract: 
  • All complexes of T cell receptors (TCRs) bound to peptide-major histocompatibility complex (pMHC) molecules assume a stereotyped binding 'polarity', despite wide variations in TCR-pMHC docking angles. However, existing TCR-pMHC crystal structures hav ...

    All complexes of T cell receptors (TCRs) bound to peptide-major histocompatibility complex (pMHC) molecules assume a stereotyped binding 'polarity', despite wide variations in TCR-pMHC docking angles. However, existing TCR-pMHC crystal structures have failed to show broadly conserved pairwise interaction motifs. Here we determined the crystal structures of two TCRs encoded by the variable beta-chain 8.2 (V(beta)8.2), each bound to the MHC class II molecule I-A(u), and did energetic mapping of V(alpha) and V(beta) contacts with I-A(u). Together with two previously solved structures of V(beta)8.2-containing TCR-MHC complexes, we found four TCR-I-A complexes with structurally superimposable interactions between the V(beta) loops and the I-A alpha-helix. This examination of a narrow 'slice' of the TCR-MHC repertoire demonstrates what is probably one of many germline-derived TCR-MHC interaction 'codons'.


    Organizational Affiliation

    Howard Hughes Medical Institute, Department of Molecular & Cellular Physiology, Stanford University School of Medicine, Stanford, California 94305, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
T-cell receptor alpha-chainA112Mus musculusMutation(s): 0 
Gene Names: TRAV6D-7
Find proteins for Q5R1F5 (Mus musculus)
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
T-cell receptor beta-chainB111Mus musculusMutation(s): 0 
Find proteins for A2NTY6 (Mus musculus)
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
H-2 class II histocompatibility antigen, A-U alpha chainC181Mus musculusMutation(s): 0 
Gene Names: H2-Aa
Find proteins for P14438 (Mus musculus)
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
H-2 class II histocompatibility antigen, A-U beta chain precursorD189Mus musculusMutation(s): 0 
Find proteins for P06344 (Mus musculus)
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Go to UniProtKB:  P06344
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Myelin basic protein (MBP)-peptideP11N/AMutation(s): 0 
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.235 
  • Space Group: P 41 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 97.332α = 90
b = 97.332β = 90
c = 174.369γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
AMoREphasing
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-10-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance