4F7C

Crystal structure of bovine CD1d with bound C12-di-sulfatide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.86 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.225 

wwPDB Validation   3D Report Full Report



Literature

Crystal Structures of Bovine CD1d Reveal Altered αGalCer Presentation and a Restricted A' Pocket Unable to Bind Long-Chain Glycolipids.

Wang, J.Guillaume, J.Pauwels, N.Van Calenbergh, S.Van Rhijn, I.Zajonc, D.M.

(2012) PLoS One 7: e47989-e47989

  • DOI: 10.1371/journal.pone.0047989
  • Primary Citation of Related Structures:  
    4F7C, 4F7E

  • PubMed Abstract: 
  • NKT cells play important roles in immune surveillance. They rapidly respond to pathogens by detecting microbial glycolipids when presented by the non-classical MHC I homolog CD1d. Previously, ruminants were considered to lack NKT cells due to the lac ...

    NKT cells play important roles in immune surveillance. They rapidly respond to pathogens by detecting microbial glycolipids when presented by the non-classical MHC I homolog CD1d. Previously, ruminants were considered to lack NKT cells due to the lack of a functional CD1D gene. However, recent data suggest that cattle express CD1d with unknown function. In an attempt to characterize the function of bovine CD1d, we assessed the lipid binding properties of recombinant Bos taurus CD1d (boCD1d) in vitro. BoCD1d is able to bind glycosphingolipids (GSLs) with fatty acid chain lengths of C₁₈, while GSLs with fatty acids of C₂₄ do not bind. Crystal structures of boCD1d bound to a short-chain C₁₂-di-sulfatide antigen, as well as short-chain C₁₆-αGalCer revealed that the Á pocket of boCD1d is restricted in size compared to that of both mouse and human CD1d, explaining the inability of long chain GSL's to bind to boCD1d. Moreover, while di-sulfatide is presented similarly compared to the presentation of sulfatide by mouse CD1d, αGalCer is presented differently at the cell surface, due to an amino acid Asp151Asn substitution that results in loss of intimate contacts between the αGalCer headgroup and CD1d. The altered αGalCer presentation by boCD1d also explains its lack of cross-activation of mouse iNKT cells and raises the interesting question of the nature and function of bovine lipid-reactive T cells.


    Organizational Affiliation

    Division of Cell Biology, La Jolla Institute for Allergy and Immunology, La Jolla, California, United States of America.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CD1D antigen, d polypeptideAC283Bos taurusMutation(s): 0 
Gene Names: CD1D
Find proteins for A1L565 (Bos taurus)
Explore A1L565 
Go to UniProtKB:  A1L565
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-2-microglobulinBD98Bos taurusMutation(s): 0 
Gene Names: B2M
Find proteins for P01888 (Bos taurus)
Explore P01888 
Go to UniProtKB:  P01888
Protein Feature View
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  • Reference Sequence
Oligosaccharides

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Entity ID: 3
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
E
2 N-Glycosylation Oligosaccharides Interaction
Entity ID: 4
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
F, G
3 N-Glycosylation Oligosaccharides Interaction
Entity ID: 5
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
H
4 N-Glycosylation Oligosaccharides Interaction
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
0SG
Query on 0SG

Download Ideal Coordinates CCD File 
A, C
N-{(2S,3R,4E)-1-[(3,6-di-O-sulfo-beta-D-galactopyranosyl)oxy]-3-hydroxyoctadec-4-en-2-yl}dodecanamide
C36 H69 N O14 S2
JBJSVLZKWGLXMO-AZNTWQPMSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.86 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.225 
  • Space Group: P 42
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 168.553α = 90
b = 168.553β = 90
c = 41.525γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2012-05-15 
  • Released Date: 2012-11-14 
  • Deposition Author(s): Wang, J., Zajonc, D.M.

Revision History 

  • Version 1.0: 2012-11-14
    Type: Initial release
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Database references, Derived calculations, Structure summary