1MI5

The crystal structure of LC13 TcR in complex with HLAB8-EBV peptide complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.226 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A Structural Basis for the Selection of Dominant alphabeta T Cell Receptors in Antiviral Immunity

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

(2003) IMMUNITY 18: 53-64


  • PubMed Abstract: 
  • We have examined the basis for immunodominant or "public" TCR usage in an antiviral CTL response. Residues encoded by each of the highly selected genetic elements of an immunodominant clonotype recognizing Epstein-Barr virus were critical to the anti ...

    We have examined the basis for immunodominant or "public" TCR usage in an antiviral CTL response. Residues encoded by each of the highly selected genetic elements of an immunodominant clonotype recognizing Epstein-Barr virus were critical to the antigen specificity of the receptor. Upon recognizing antigen, the immunodominant TCR undergoes extensive conformational changes in the complementarity determining regions (CDRs), including the disruption of the canonical structures of the germline-encoded CDR1alpha and CDR2alpha loops to produce an enhanced fit with the HLA-peptide complex. TCR ligation induces conformational changes in the TCRalpha constant domain thought to form part of the docking site for CD3epsilon. These findings indicate that TCR immunodominance is associated with structural properties conferring receptor specificity and suggest a novel structural link between TCR ligation and intracellular signaling.


    Organizational Affiliation

    Department of Microbiology & Immunology, University of Melbourne, Parkville, Victoria 3010, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MHC heavy chain
A
277Homo sapiensMutation(s): 0 
Gene Names: HLA-B (HLAB)
Find proteins for P30460 (Homo sapiens)
Go to Gene View: HLA-B
Go to UniProtKB:  P30460
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
beta 2 microglobulin
B
99Homo sapiensMutation(s): 0 
Gene Names: B2M
Find proteins for P61769 (Homo sapiens)
Go to Gene View: B2M
Go to UniProtKB:  P61769
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Epstein Barr Virus peptide
C
9Epstein-Barr virus (strain GD1)Mutation(s): 0 
Gene Names: EBNA3
Find proteins for Q3KST2 (Epstein-Barr virus (strain GD1))
Go to UniProtKB:  Q3KST2
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
TcR alpha chain
D
201Homo sapiensMutation(s): 0 
Gene Names: TRAC (TCRA)
Find proteins for P01848 (Homo sapiens)
Go to UniProtKB:  P01848
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
TcR beta chain
E
241Homo sapiensMutation(s): 0 
Gene Names: TRBC1
Find proteins for P01850 (Homo sapiens)
Go to UniProtKB:  P01850
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.226 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 56.490α = 90.00
b = 105.900β = 90.00
c = 144.500γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
DENZOdata reduction
CNSrefinement
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-02-04
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance