3CPL

Crystal Structure of H-2Db in complex with a variant M6A of the NP366 peptide from influenza A virus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.220 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Complete modification of TCR specificity and repertoire selection does not perturb a CD8+ T cell immunodominance hierarchy.

Kedzierska, K.Guillonneau, C.Gras, S.Hatton, L.A.Webby, R.Purcell, A.W.Rossjohn, J.Doherty, P.C.Turner, S.J.

(2008) Proc.Natl.Acad.Sci.USA 105: 19408-19413

  • DOI: 10.1073/pnas.0810274105

  • PubMed Abstract: 
  • Understanding T cell immunodominance hierarchies is fundamental to the development of cellular-based vaccines and immunotherapy. A combination of influenza virus infection in C57BL/6J mice and reverse genetics is used here to dissect the role of T ce ...

    Understanding T cell immunodominance hierarchies is fundamental to the development of cellular-based vaccines and immunotherapy. A combination of influenza virus infection in C57BL/6J mice and reverse genetics is used here to dissect the role of T cell antigen receptor (TCR) repertoire in the immunodominant D(b)NP(366)CD8(+) T cell response. Infection with an engineered virus (NPM6A) containing a single alanine (A) mutation at the critical p6 NP(366-374) residue induced a noncross-reactive CD8(+) T cell response characterized by a novel, narrower TCR repertoire per individual mouse that was nonetheless equivalent in magnitude to that generated after WT virus challenge. Although of lower overall avidity, the levels of both cytotoxic T lymphocyte activity and cytokine production were comparable with those seen for the native response. Importantly, the overdominance profile characteristic of secondary D(b)NP(366)-specific clonal expansions was retained for the NPM6A mutant. The primary determinants of immunodominance in this endogenous, non-TCR-transgenic model of viral immunity are thus independent of TCR repertoire composition and diversity. These findings both highlight the importance of effective antigen dose for T cell vaccination and/or immunotherapy and demonstrate the feasibility of priming the memory T cell compartment with engineered viruses to protect against commonly selected mutants viral (or tumor) escape mutants.


    Organizational Affiliation

    Department of Microbiology and Immunology, The Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, Melbourne, Australia. kkedz@unimelb.edu.au




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
H-2 class I histocompatibility antigen, D-B alpha chain
A, C
275Mus musculusGene Names: H2-D1
Find proteins for P01899 (Mus musculus)
Go to UniProtKB:  P01899
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Beta-2-microglobulin
B, D
99Mus musculusGene Names: B2m
Find proteins for P01887 (Mus musculus)
Go to UniProtKB:  P01887
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
NP366 peptide
E, F
9N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.220 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 57.710α = 99.95
b = 69.700β = 111.04
c = 72.380γ = 110.48
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
PDB_EXTRACTdata extraction
CrystalCleardata collection
PHASERphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-11-18
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance