3TZV

Crystal structure of an iNKT TCR in complex with CD1d-lysophosphatidylcholine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.056 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.236 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Lysophospholipid presentation by CD1d and recognition by a human Natural Killer T-cell receptor.

Lopez-Sagaseta, J.Sibener, L.V.Kung, J.E.Gumperz, J.Adams, E.J.

(2012) Embo J. 31: 2047-2059

  • DOI: 10.1038/emboj.2012.54
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Invariant Natural Killer T (iNKT) cells use highly restricted αβ T cell receptors (TCRs) to probe the repertoire of lipids presented by CD1d molecules. Here, we describe our studies of lysophosphatidylcholine (LPC) presentation by human CD1d and its ...

    Invariant Natural Killer T (iNKT) cells use highly restricted αβ T cell receptors (TCRs) to probe the repertoire of lipids presented by CD1d molecules. Here, we describe our studies of lysophosphatidylcholine (LPC) presentation by human CD1d and its recognition by a native, LPC-specific iNKT TCR. Human CD1d presenting LPC adopts an altered conformation from that of CD1d presenting glycolipid antigens, with a shifted α1 helix resulting in an open A' pocket. Binding of the iNKT TCR requires a 7-Å displacement of the LPC headgroup but stabilizes the CD1d-LPC complex in a closed conformation. The iNKT TCR CDR loop footprint on CD1d-LPC is anchored by the conserved positioning of the CDR3α loop, whereas the remaining CDR loops are shifted, due in part to amino-acid differences in the CDR3β and Jβ segment used by this iNKT TCR. These findings provide insight into how lysophospholipids are presented by human CD1d molecules and how this complex is recognized by some, but not all, human iNKT cells.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, IL, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Invariant Natural Killer T Cell Receptor chain A
A, G
213N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Invariant Natural Killer T Cell Receptor chain B
B, H
259N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Antigen-presenting glycoprotein CD1d
C
276Homo sapiensMutation(s): 3 
Gene Names: CD1D
Find proteins for P15813 (Homo sapiens)
Go to Gene View: CD1D
Go to UniProtKB:  P15813
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Beta-2-microglobulin
D
99Homo sapiensMutation(s): 0 
Gene Names: B2M
Find proteins for P61769 (Homo sapiens)
Go to Gene View: B2M
Go to UniProtKB:  P61769
Small Molecules
Ligands 6 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
D12
Query on D12

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Download CCD File 
C
DODECANE
C12 H26
SNRUBQQJIBEYMU-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

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C
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
FUC
Query on FUC

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Download CCD File 
C
ALPHA-L-FUCOSE
C6 H12 O5
SHZGCJCMOBCMKK-SXUWKVJYSA-N
 Ligand Interaction
NAG
Query on NAG

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Download CCD File 
C
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
HEX
Query on HEX

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C
HEXANE
C6 H14
VLKZOEOYAKHREP-UHFFFAOYSA-N
 Ligand Interaction
LSC
Query on LSC

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C
(4R,7R,18E)-4,7-dihydroxy-N,N,N-trimethyl-10-oxo-3,5,9-trioxa-4-phosphaheptacos-18-en-1-aminium 4-oxide
C26 H53 N O7 P
YAMUFBLWGFFICM-ZOGNMOHXSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.056 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.236 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 66.591α = 90.00
b = 117.605β = 90.00
c = 190.656γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
PHENIXrefinement
PHASERphasing
PDB_EXTRACTdata extraction
HKL-2000data collection
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-04-25
    Type: Initial release
  • Version 1.1: 2017-11-08
    Type: Advisory, Refinement description