1OGA

A structural basis for immunodominant human T-cell receptor recognition.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.218 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A Structural Basis for Immunodominant Human T Cell Receptor Recognition

Stewart-Jones, G.B.E.Mcmichael, A.J.Bell, J.I.Stuart, D.I.Jones, E.Y.

(2003) Nat.Immunol. 4: 657

  • DOI: 10.1038/ni942

  • PubMed Abstract: 
  • The anti-influenza CD8+ T cell response in HLA-A2-positive adults is almost exclusively directed at residues 58-66 of the virus matrix protein (MP(58-66)). V(beta)17V(alpha)10.2 T cell receptors (TCRs) containing a conserved arginine-serine-serine se ...

    The anti-influenza CD8+ T cell response in HLA-A2-positive adults is almost exclusively directed at residues 58-66 of the virus matrix protein (MP(58-66)). V(beta)17V(alpha)10.2 T cell receptors (TCRs) containing a conserved arginine-serine-serine sequence in complementarity determining region 3 (CDR3) of the V(beta) segment dominate this response. To investigate the molecular basis of immunodominant selection in an outbred population, we have determined the crystal structure of V(beta)17V(alpha)10.2 in complex with MP(58-66)-HLA-A2 at a resolution of 1.4 A. We show that, whereas the TCR typically fits over an exposed side chain of the peptide, in this structure MP(58-66) exposes only main chain atoms. This distinctive orientation of V(beta)17V(alpha)10.2, which is almost orthogonal to the peptide-binding groove of HLA-A2, facilitates insertion of the conserved arginine in V(beta) CDR3 into a notch in the surface of MP(58-66)-HLA-A2. This previously unknown binding mode underlies the immunodominant T cell response.


    Organizational Affiliation

    Division of Structural Biology, The Henry Wellcome Building for Genomic Medicine, Roosevelt Drive, Oxford OX3 7BN, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HLA CLASS I HISTOCOMPATIBILITY ANTIGEN
A
276Homo sapiensGene Names: HLA-A (HLAA)
Find proteins for P01892 (Homo sapiens)
Go to Gene View: HLA-A
Go to UniProtKB:  P01892
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
BETA-2-MICROGLOBULIN
B
100Homo sapiensGene Names: B2M
Find proteins for P61769 (Homo sapiens)
Go to Gene View: B2M
Go to UniProtKB:  P61769
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
GILGFVFTL
C
9N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
T-CELL RECEPTOR ALPHA CHAIN V REGION
D
215Homo sapiensGene Names: TRAC (TCRA)
Find proteins for P01848 (Homo sapiens)
Go to UniProtKB:  P01848
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
T-CELL RECEPTOR BETA CHAIN C REGION
E
252Homo sapiensGene Names: TRBC1
Find proteins for P01850 (Homo sapiens)
Go to UniProtKB:  P01850
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.218 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 67.019α = 90.00
b = 108.838β = 112.46
c = 77.741γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
EPMRphasing
SCALEPACKdata scaling
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-06-19
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance