1U3H

Crystal structure of mouse TCR 172.10 complexed with MHC class II I-Au molecule at 2.4 A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.42 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.232 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of an autoimmune T cell receptor complexed with class II peptide-MHC: insights into MHC bias and antigen specificity

Maynard, J.Petersson, K.Wilson, D.H.Adams, E.J.Blondelle, S.E.Boulanger, M.J.Wilson, D.B.Garcia, K.C.

(2005) Immunity 22: 81-92

  • DOI: 10.1016/j.immuni.2004.11.015

  • PubMed Abstract: 
  • T cell receptor crossreactivity with different peptide ligands and biased recognition of MHC are coupled features of antigen recognition that are necessary for the T cell's diverse functional repertoire. In the crystal structure between an autoreacti ...

    T cell receptor crossreactivity with different peptide ligands and biased recognition of MHC are coupled features of antigen recognition that are necessary for the T cell's diverse functional repertoire. In the crystal structure between an autoreactive, EAE T cell clone 172.10 and myelin basic protein (1-11) presented by class II MHC I-Au, recognition of the MHC is dominated by the Vbeta domain of the TCR, which interacts with the MHC alpha chain in a manner suggestive of a germline-encoded TCR/MHC "anchor point." Strikingly, there are few specific contacts between the TCR CDR3 loops and the MBP peptide. We also find that over 1,000,000 different peptides derived from combinatorial libraries can activate 172.10, yet the TCR strongly prefers the native MBP contact residues. We suggest that while TCR scanning of pMHC may be degenerate due to the TCR germline bias for MHC, recognition of structurally distinct agonist peptides is not indicative of TCR promiscuity, but rather highly specific alternative solutions to TCR engagement.


    Organizational Affiliation

    Departments of Microbiology and Immunology, Structural Biology, Stanford University School of Medicine, Stanford, CA 94305, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
T-cell receptor alpha-chain
A, E
110Mus musculusMutation(s): 0 
Gene Names: TRAV14-3
Find proteins for Q5R1B3 (Mus musculus)
Go to UniProtKB:  Q5R1B3
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Mouse TCRVbeta 172.10, extracellular variable domain
B, F
111Mus musculusMutation(s): 0 
Find proteins for P04213 (Mus musculus)
Go to UniProtKB:  P04213
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
H-2 class II histocompatibility antigen, A-U alpha chain
C, G
182Mus musculusMutation(s): 0 
Gene Names: H2-Aa
Find proteins for P14438 (Mus musculus)
Go to UniProtKB:  P14438
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
H-2 class II histocompatibility antigen, A-U beta chain
D, H
189Mus musculusMutation(s): 0 
Find proteins for P06344 (Mus musculus)
Go to UniProtKB:  P06344
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
Myelin basic protein (MBP)-peptide
P, I
12Mus musculusMutation(s): 0 
Gene Names: Mbp (Shi)
Find proteins for P04370 (Mus musculus)
Go to UniProtKB:  P04370
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.42 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.232 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 87.835α = 90.00
b = 327.162β = 90.00
c = 127.161γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
HKL-2000data scaling
CNSrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-05-17
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2013-03-06
    Type: Other