4EI6

Structure of XV19 Valpha1-Vbeta16 Type-II Natural Killer T cell receptor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.208 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Recognition of CD1d-sulfatide mediated by a type II natural killer T cell antigen receptor.

Patel, O.Pellicci, D.G.Gras, S.Sandoval-Romero, M.L.Uldrich, A.P.Mallevaey, T.Clarke, A.J.Le Nours, J.Theodossis, A.Cardell, S.L.Gapin, L.Godfrey, D.I.Rossjohn, J.

(2012) Nat.Immunol. 13: 857-863

  • DOI: 10.1038/ni.2372
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Natural killer T cells (NKT cells) are divided into type I and type II subsets on the basis of differences in their T cell antigen receptor (TCR) repertoire and CD1d-antigen specificity. Although the mode by which type I NKT cell TCRs recognize CD1d- ...

    Natural killer T cells (NKT cells) are divided into type I and type II subsets on the basis of differences in their T cell antigen receptor (TCR) repertoire and CD1d-antigen specificity. Although the mode by which type I NKT cell TCRs recognize CD1d-antigen has been established, how type II NKT cell TCRs engage CD1d-antigen is unknown. Here we provide a basis for how a type II NKT cell TCR, XV19, recognized CD1d-sulfatide. The XV19 TCR bound orthogonally above the A' pocket of CD1d, in contrast to the parallel docking of type I NKT cell TCRs over the F' pocket of CD1d. At the XV19 TCR-CD1d-sulfatide interface, the TCRα and TCRβ chains sat centrally on CD1d, where the malleable CDR3 loops dominated interactions with CD1d-sulfatide. Accordingly, we highlight the diverse mechanisms by which NKT cell TCRs can bind CD1d and account for the distinct antigen specificity of type II NKT cells.


    Organizational Affiliation

    1] Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Valpha1 XV19 Type II Natural Killer T cell receptor (mouse variable domain, human constant domain)
A, C
208N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Vbeta16 XV19 Type II Natural Killer T cell receptor (mouse variable domain, human constant domain)
B, D
245N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.208 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 65.268α = 90.00
b = 100.120β = 90.00
c = 152.668γ = 90.00
Software Package:
Software NamePurpose
Blu-Icedata collection
SCALAdata scaling
MOSFLMdata reduction
PHASERphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-07-25
    Type: Initial release
  • Version 1.1: 2012-08-08
    Type: Database references
  • Version 1.2: 2012-09-05
    Type: Database references