3QI9

Crystal structure of mouse CD1d-alpha-phosphotidylinositol with mouse Valpha14-Vbeta6 2A3-D NKT TCR


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.247 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

A molecular basis for NKT cell recognition of CD1d-self-antigen

Mallevaey, T.Clarke, A.J.Scott-Browne, J.P.Young, M.H.Roisman, L.C.Pellicci, D.G.Patel, O.Vivian, J.P.Matsuda, J.L.McCluskey, J.Godfrey, D.I.Marrack, P.Rossjohn, J.Gapin, L.

(2011) Immunity 34: 315-326

  • DOI: 10.1016/j.immuni.2011.01.013
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The antigen receptor for natural killer T cells (NKT TCR) binds CD1d-restricted microbial and self-lipid antigens, although the molecular basis of self-CD1d recognition is unclear. Here, we have characterized NKT TCR recognition of CD1d molecules loa ...

    The antigen receptor for natural killer T cells (NKT TCR) binds CD1d-restricted microbial and self-lipid antigens, although the molecular basis of self-CD1d recognition is unclear. Here, we have characterized NKT TCR recognition of CD1d molecules loaded with natural self-antigens (Ags) and report the 2.3 Å resolution structure of an autoreactive NKT TCR-phosphatidylinositol-CD1d complex. NKT TCR recognition of self- and foreign antigens was underpinned by a similar mode of germline-encoded recognition of CD1d. However, NKT TCR autoreactivity is mediated by unique sequences within the non-germline-encoded CDR3β loop encoding for a hydrophobic motif that promotes self-association with CD1d. Accordingly, NKT cell autoreactivity may arise from the inherent affinity of the interaction between CD1d and the NKT TCR, resulting in the recognition of a broad range of CD1d-restricted self-antigens. This demonstrates that multiple self-antigens can be recognized in a similar manner by autoreactive NKT TCRs.


    Organizational Affiliation

    Department of Immunology, University of Colorado School of Medicine and National Jewish Health, Denver, CO 80206, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Antigen-presenting glycoprotein CD1d1
A
302Mus musculusMutation(s): 0 
Gene Names: Cd1d1 (Cd1.1)
Find proteins for P11609 (Mus musculus)
Go to UniProtKB:  P11609
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
NKT TCR V alpha 14
C
207N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
NKT TCR V beta 6 2A3-D
D
243N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PII
Query on PII

Download SDF File 
Download CCD File 
A
2-[(HYDROXY{[(2R,3R,5S,6R)-2,3,4,5,6-PENTAHYDROXYCYCLOHEXYL]OXY}PHOSPHORYL)OXY]-1-[(PALMITOYLOXY)METHYL]ETHYL HEPTADECANOATE
C42 H81 O13 P
QVAGJHIIXLLVCI-KSGPIMHQSA-N
 Ligand Interaction
GOL
Query on GOL

Download SDF File 
Download CCD File 
B, D
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.247 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 95.697α = 90.00
b = 95.697β = 90.00
c = 289.710γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-02-15
    Type: Initial release