3AXL

Murine Valpha 10 Vbeta 8.1 T-cell receptor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.327 
  • R-Value Work: 0.254 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

A semi-invariant V(alpha)10(+) T cell antigen receptor defines a population of natural killer T cells with distinct glycolipid antigen-recognition properties

Uldrich, A.P.Patel, O.Cameron, G.Pellicci, D.G.Day, E.B.Sullivan, L.C.Kyparissoudis, K.Kjer-Nielsen, L.Vivian, J.P.Cao, B.Brooks, A.G.Williams, S.J.Illarionov, P.Besra, G.S.Turner, S.J.Porcelli, S.A.McCluskey, J.Smyth, M.J.Rossjohn, J.Godfrey, D.I.

(2011) Nat.Immunol. 12: 616-623

  • DOI: 10.1038/ni.2051
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Type I natural killer T cells (NKT cells) are characterized by an invariant variable region 14-joining region 18 (V(α)14-J(α)18) T cell antigen receptor (TCR) α-chain and recognition of the glycolipid α-galactosylceramide (α-GalCer) restricted to the ...

    Type I natural killer T cells (NKT cells) are characterized by an invariant variable region 14-joining region 18 (V(α)14-J(α)18) T cell antigen receptor (TCR) α-chain and recognition of the glycolipid α-galactosylceramide (α-GalCer) restricted to the antigen-presenting molecule CD1d. Here we describe a population of α-GalCer-reactive NKT cells that expressed a canonical V(α)10-J(α)50 TCR α-chain, which showed a preference for α-glucosylceramide (α-GlcCer) and bacterial α-glucuronic acid-containing glycolipid antigens. Structurally, despite very limited TCRα sequence identity, the V(α)10 TCR-CD1d-α-GlcCer complex had a docking mode similar to that of type I TCR-CD1d-α-GalCer complexes, although differences at the antigen-binding interface accounted for the altered antigen specificity. Our findings provide new insight into the structural basis and evolution of glycolipid antigen recognition and have notable implications for the scope and immunological role of glycolipid-specific T cell responses.


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Valpha 10
A, G
198N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Vbeta 8.1
B, H
238N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.327 
  • R-Value Work: 0.254 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 148.841α = 90.00
b = 65.801β = 97.14
c = 97.375γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
Blu-Icedata collection
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-08-03
    Type: Initial release