3GSO

Crystal structure of the binary complex between HLA-A2 and HCMV NLV peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.188 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural bases for the affinity-driven selection of a public TCR against a dominant human cytomegalovirus epitope.

Gras, S.Saulquin, X.Reiser, J.B.Debeaupuis, E.Echasserieau, K.Kissenpfennig, A.Legoux, F.Chouquet, A.Le Gorrec, M.Machillot, P.Neveu, B.Thielens, N.Malissen, B.Bonneville, M.Housset, D.

(2009) J Immunol 183: 430-437

  • DOI: 10.4049/jimmunol.0900556
  • Primary Citation of Related Structures:  
    3GSW, 3GSX, 3GSO, 3GSQ, 3GSR, 3GSU, 3GSV, 3GSN

  • PubMed Abstract: 
  • Protective T cell responses elicited along chronic human CMV (HCMV) infections are sometimes dominated by CD8 T cell clones bearing highly related or identical public TCR in unrelated individuals. To understand the principles that guide emergence of ...

    Protective T cell responses elicited along chronic human CMV (HCMV) infections are sometimes dominated by CD8 T cell clones bearing highly related or identical public TCR in unrelated individuals. To understand the principles that guide emergence of these public T cell responses, we have performed structural, biophysical, and functional analyses of an immunodominant public TCR (RA14) directed against a major HLA-A*0201-restricted HCMV Ag (pp65(495-503)) and selected in vivo from a diverse repertoire after chronic stimulations. Unlike the two immunodominant public TCRs crystallized so far, which focused on one peptide hotspot, the HCMV-specific RA14 TCR interacts with the full array of available peptide residues. The conservation of some peptide-MHC complex-contacting amino acids by lower-affinity TCRs suggests a shared TCR-peptide-MHC complex docking mode and supports an Ag-driven selection of optimal TCRs. Therefore, the emergence of a public TCR of an oligoclonal Ag-specific response after repeated viral stimulations is based on a receptor displaying a high structural complementarity with the entire peptide and focusing on three peptide hotspots. This highlights key parameters underlying the selection of a protective T cell response against HCMV infection, which remains a major health issue in patients undergoing bone marrow transplantation.


    Organizational Affiliation

    Institut de Biologie Structurale Jean-Pierre Ebel, CEA, CNRS, UJF, PSB, Grenoble, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HLA class I histocompatibility antigen, A-2 alpha chainA274Homo sapiensMutation(s): 1 
Gene Names: HLAHLA-AHLAA
Find proteins for P04439 (Homo sapiens)
Explore P04439 
Go to UniProtKB:  P04439
NIH Common Fund Data Resources
PHAROS  P04439
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-2-microglobulinB100Homo sapiensMutation(s): 0 
Gene Names: B2MBeta-2 microglubulinCDABP0092HDCMA22P
Find proteins for P61769 (Homo sapiens)
Explore P61769 
Go to UniProtKB:  P61769
NIH Common Fund Data Resources
PHAROS  P61769
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
HCMV pp65 fragment 495-503 (NLVPMVATV)P9N/AMutation(s): 0 
Find proteins for P06725 (Human cytomegalovirus (strain AD169))
Explore P06725 
Go to UniProtKB:  P06725
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.188 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.222α = 90
b = 80.876β = 112.78
c = 56.522γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
AMoREphasing
REFMACrefinement
PDB_EXTRACTdata extraction
ADSCdata collection
MOSFLMdata reduction

Structure Validation

View Full Validation Report



Entry History 

Revision History 

  • Version 1.0: 2009-08-04
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance