3BUY

MHC-I in complex with peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.306 
  • R-Value Work: 0.243 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Epitope-specific TCRbeta repertoire diversity imparts no functional advantage on the CD8+ T cell response to cognate viral peptides

La Gruta, N.L.Thomas, P.G.Webb, A.I.Dunstone, M.A.Cukalac, T.Doherty, P.C.Purcell, A.W.Rossjohn, J.Turner, S.J.

(2008) Proc.Natl.Acad.Sci.Usa 105: 2034-2039

  • DOI: 10.1073/pnas.0711682102

  • PubMed Abstract: 
  • TCR repertoire diversity has been convincingly shown to facilitate responsiveness of CD8+ T cell populations to mutant virus peptides, thereby safeguarding against viral escape. However, the impact of repertoire diversity on the functionality of the ...

    TCR repertoire diversity has been convincingly shown to facilitate responsiveness of CD8+ T cell populations to mutant virus peptides, thereby safeguarding against viral escape. However, the impact of repertoire diversity on the functionality of the CD8+ T cell response to cognate peptide-MHC class I complex (pMHC) recognition remains unclear. Here, we have compared TCRbeta chain repertoires of three influenza A epitope-specific CD8+ T cell responses in C57BL/6 (B6) mice: D(b)NP(366-374), D(b)PA(224-233), and a recently described epitope derived from the +1 reading frame of the influenza viral polymerase B subunit (residues 62-70) (D(b)PB1-F2(62)). Corresponding to the relative antigenicity of the respective pMHCs, and irrespective of the location of prominent residues, the D(b)PA(224)- and D(b)PB1-F2(62)-specific repertoires were similarly diverse, whereas the D(b)NP(366) population was substantially narrower. Importantly, parallel analysis of response magnitude, cytotoxicity, TCR avidity, and cytokine production for the three epitope-specific responses revealed no obvious functional advantage conferred by increased T cell repertoire diversity. Thus, whereas a diverse repertoire may be important for recognition of epitope variants, its effect on the response to cognate pMHC recognition appears minimal.


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
H-2 class I histocompatibility antigen, D-B alpha chain
A
275Mus musculusMutation(s): 0 
Gene Names: H2-D1
Find proteins for P01899 (Mus musculus)
Go to UniProtKB:  P01899
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Beta-2-microglobulin
B
99Mus musculusMutation(s): 0 
Gene Names: B2m
Find proteins for P01887 (Mus musculus)
Go to UniProtKB:  P01887
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
epitope of PB1-F2
C
9Influenza A virus (strain A/Puerto Rico/8/1934 H1N1)Mutation(s): 0 
Gene Names: PB1
Find proteins for P0C0U1 (Influenza A virus (strain A/Puerto Rico/8/1934 H1N1))
Go to UniProtKB:  P0C0U1
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.306 
  • R-Value Work: 0.243 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 55.756α = 90.00
b = 55.756β = 90.00
c = 278.604γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-03-25
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance