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 
  • R-Value Observed: 0.232 

wwPDB Validation   3D Report Full Report


This is version 1.4 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
  • Primary Citation of Related Structures:  
    1U3H

  • 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 autoreactive, EAE T cell clone 172 ...

    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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
T-cell receptor alpha-chainA,
F [auth E]
110Mus musculusMutation(s): 0 
Gene Names: TRAV14-3
UniProt
Find proteins for Q5R1B3 (Mus musculus)
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UniProt GroupQ5R1B3
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Mouse TCRVbeta 172.10, extracellular variable domainB,
G [auth F]
111Mus musculusMutation(s): 0 
UniProt
Find proteins for P04213 (Mus musculus)
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
H-2 class II histocompatibility antigen, A-U alpha chainC,
H [auth G]
182Mus musculusMutation(s): 0 
Gene Names: H2-Aa
UniProt
Find proteins for P14438 (Mus musculus)
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
H-2 class II histocompatibility antigen, A-U beta chainD,
I [auth H]
189Mus musculusMutation(s): 0 
UniProt
Find proteins for P06344 (Mus musculus)
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Myelin basic protein (MBP)-peptideJ [auth I],
E [auth P]
12synthetic constructMutation(s): 0 
UniProt
Find proteins for P04370 (Mus musculus)
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UniProt GroupP04370
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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.42 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.232 
  • R-Value Observed: 0.232 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.835α = 90
b = 327.162β = 90
c = 127.161γ = 90
Software Package:
Software NamePurpose
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling
MOLREPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-05-17
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2013-03-06
    Changes: Other
  • Version 1.4: 2020-02-05
    Changes: Database references, Derived calculations, Source and taxonomy