2VLR

The Structural Dynamics and Energetics of an Immunodominant T-cell Receptor are Programmed by its Vbeta Domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.222 

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This is version 1.2 of the entry. See complete history


Literature

The Structural Dynamics and Energetics of an Immunodominant T-Cell Receptor are Programmed by its Vbeta Domain

Ishizuka, J.Stewart-Jones, G.Van Der Merwe, A.Bell, J.Mcmichael, A.Jones, Y.

(2008) Immunity 28: 171

  • DOI: https://doi.org/10.1016/j.immuni.2007.12.018
  • Primary Citation of Related Structures:  
    2VLJ, 2VLK, 2VLL, 2VLM, 2VLR

  • PubMed Abstract: 

    Immunodominant and public T cell receptor (TCR) usage is relatively common in many viral diseases yet surprising in the context of the large naive TCR repertoire. We examined the highly conserved Vbeta17:Valpha10.2 JM22 T cell response to the influenza matrix peptide (58-66)-HLA-A*0201 (HLA-A2-flu) through extensive kinetic, thermodynamic, and structural analyses. We found several conformational adjustments that accompany JM22-HLA-A2-flu binding and identified a binding "hotspot" within the Vbeta domain of the TCR. Within this hotspot, key germline-encoded CDR1 and CDR2 loop residues and a crucial but commonly coded residue in the hypervariable region of CDR3 provide the basis for the substantial bias in the selection of the germline-encoded Vbeta17 domain. The chances of having a substantial number of T cells in the naive repertoire that have HLA-A2-flu-specific Vbeta17 receptors may consequently be relatively high, thus explaining the immunodominant usage of this clonotype.


  • Organizational Affiliation

    MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HLA CLASS I HISTOCOMPATIBILITY ANTIGEN, A-2 ALPHA CHAIN
A, F
276Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P04439 (Homo sapiens)
Explore P04439 
Go to UniProtKB:  P04439
PHAROS:  P04439
GTEx:  ENSG00000206503 
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UniProt GroupP04439
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
BETA-2-MICROGLOBULIN
B, G
100Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P61769 (Homo sapiens)
Explore P61769 
Go to UniProtKB:  P61769
PHAROS:  P61769
GTEx:  ENSG00000166710 
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UniProt GroupP61769
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  • Reference Sequence

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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
FLU MATRIX PEPTIDE
C, H
9unidentified influenza virusMutation(s): 0 
UniProt
Find proteins for P03485 (Influenza A virus (strain A/Puerto Rico/8/1934 H1N1))
Explore P03485 
Go to UniProtKB:  P03485
Entity Groups  
UniProt GroupP03485
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  • Reference Sequence
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
JM22 TCR ALPHA CHAIN
D, I
201Homo sapiensMutation(s): 0 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
JM22 TCR BETA CHAIN
E, J
244Homo sapiensMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.222 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.622α = 110.29
b = 95.523β = 98.64
c = 122.045γ = 93.59
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-01-22
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2019-09-18
    Changes: Advisory, Data collection