5TW2

Structure of mouse CD1d with bound alpha-galactosylsphingamide JG168


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.203 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 2.1 of the entry. See complete history


Literature

Galactosylsphingamides: new alpha-GalCer analogues to probe the F'-pocket of CD1d.

Guillaume, J.Wang, J.Janssens, J.Remesh, S.G.Risseeuw, M.D.P.Decruy, T.Froeyen, M.Elewaut, D.Zajonc, D.M.Calenbergh, S.V.

(2017) Sci Rep 7: 4276-4276

  • DOI: https://doi.org/10.1038/s41598-017-04461-7
  • Primary Citation of Related Structures:  
    5TW2, 5TW5

  • PubMed Abstract: 

    Invariant Natural Killer T-cells (iNKT-cells) are an attractive target for immune response modulation, as upon CD1d-mediated stimulation with KRN7000, a synthetic α-galactosylceramide, they produce a vast amount of cytokines. Here we present a synthesis that allows swift modification of the phytosphingosine side chain by amidation of an advanced methyl ester precursor. The resulting KRN7000 derivatives, termed α-galactosylsphingamides, were evaluated for their capacity to stimulate iNKT-cells. While introduction of the amide-motif in the phytosphingosine chain is tolerated for CD1d binding and TCR recognition, the studied α-galactosylsphingamides showed compromised antigenic properties.


  • Organizational Affiliation

    Laboratory for Medicinal Chemistry (FFW), Faculty of Pharmaceutical Sciences, UGent, Ottergemsesteenweg 460, B-9000, Ghent, Belgium.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Antigen-presenting glycoprotein CD1d1285Mus musculusMutation(s): 1 
Gene Names: Cd1d1Cd1.1
UniProt & NIH Common Fund Data Resources
Find proteins for P11609 (Mus musculus)
Explore P11609 
Go to UniProtKB:  P11609
IMPC:  MGI:107674
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP11609
Glycosylation
Glycosylation Sites: 2Go to GlyGen: P11609-1
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Beta-2-microglobulin99Mus musculusMutation(s): 0 
Gene Names: B2m
UniProt & NIH Common Fund Data Resources
Find proteins for P01887 (Mus musculus)
Explore P01887 
Go to UniProtKB:  P01887
IMPC:  MGI:88127
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01887
Sequence Annotations
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 3
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose
C
3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G21290RB
GlyCosmos:  G21290RB
GlyGen:  G21290RB
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
7LP
Query on 7LP

Download Ideal Coordinates CCD File 
E [auth A](5R,6S,7S)-5,6-dihydroxy-7-(octanoylamino)-N-(6-phenylhexyl)-8-{[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl]oxy}octanamide
C34 H58 N2 O10
GAPCJLRKOKSZTA-RMRXMYJTSA-N
PLM
Query on PLM

Download Ideal Coordinates CCD File 
F [auth A]PALMITIC ACID
C16 H32 O2
IPCSVZSSVZVIGE-UHFFFAOYSA-N
NAG
Query on NAG

Download Ideal Coordinates CCD File 
D [auth A]2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.203 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.203α = 90
b = 107.466β = 90
c = 109.55γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data collection
SCALEPACKdata scaling
PHASERphasing
PDB_EXTRACTdata extraction
HKLdata reduction

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-09-20
    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
  • Version 2.1: 2023-10-04
    Changes: Data collection, Database references, Derived calculations, Refinement description, Structure summary