3HUJ

Crystal structure of human CD1d-alpha-Galactosylceramide in complex with semi-invariant NKT cell receptor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.219 

Starting Model: experimental
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This is version 2.1 of the entry. See complete history


Literature

Differential recognition of CD1d-alpha-galactosyl ceramide by the V beta 8.2 and V beta 7 semi-invariant NKT T cell receptors

Pellicci, D.G.Patel, O.Kjer-Nielsen, L.Pang, S.S.Sullivan, L.C.Kyparissoudis, K.Brooks, A.G.Reid, H.H.Gras, S.Lucet, I.S.Koh, R.Smyth, M.J.Mallevaey, T.Matsuda, J.L.Gapin, L.McCluskey, J.Godfrey, D.I.Rossjohn, J.

(2009) Immunity 31: 47-59

  • DOI: https://doi.org/10.1016/j.immuni.2009.04.018
  • Primary Citation of Related Structures:  
    3HE6, 3HE7, 3HUJ

  • PubMed Abstract: 

    The semi-invariant natural killer T cell receptor (NKT TCR) recognizes CD1d-lipid antigens. Although the TCR alpha chain is typically invariant, the beta chain expression is more diverse, where three V beta chains are commonly expressed in mice. We report the structures of V alpha 14-V beta 8.2 and V alpha 14-V beta 7 NKT TCRs in complex with CD1d-alpha-galactosylceramide (alpha-GalCer) and the 2.5 A structure of the human NKT TCR-CD1d-alpha-GalCer complex. Both V beta 8.2 and V beta 7 NKT TCRs and the human NKT TCR ligated CD1d-alpha-GalCer in a similar manner, highlighting the evolutionarily conserved interaction. However, differences within the V beta domains of the V beta 8.2 and V beta 7 NKT TCR-CD1d complexes resulted in altered TCR beta-CD1d-mediated contacts and modulated recognition mediated by the invariant alpha chain. Mutagenesis studies revealed the differing contributions of V beta 8.2 and V beta 7 residues within the CDR2 beta loop in mediating contacts with CD1d. Collectively we provide a structural basis for the differential NKT TCR V beta usage in NKT cells.


  • Organizational Affiliation

    Department of Microbiology and Immunology, University of Melbourne, Parkville, Victoria 3010, Australia.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
T-cell surface glycoprotein CD1d
A, C
284Homo sapiensMutation(s): 0 
Gene Names: CD1D
UniProt & NIH Common Fund Data Resources
Find proteins for P15813 (Homo sapiens)
Explore P15813 
Go to UniProtKB:  P15813
PHAROS:  P15813
GTEx:  ENSG00000158473 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP15813
Glycosylation
Glycosylation Sites: 2Go to GlyGen: P15813-1
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Beta-2-microglobulin
B, D
99Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P61769 (Homo sapiens)
Explore P61769 
Go to UniProtKB:  P61769
PHAROS:  P61769
GTEx:  ENSG00000166710 
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UniProt GroupP61769
Sequence Annotations
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
NKT15 T cell receptor alpha-chain
E, G
209Homo sapiensMutation(s): 0 
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  • Reference Sequence
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
NKT15 T cell receptor beta-chain
F, H
246Homo sapiensMutation(s): 0 
Entity Groups  
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 5
MoleculeChains Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
I
2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G90333CG
GlyCosmos:  G90333CG
GlyGen:  G90333CG
Entity ID: 6
MoleculeChains Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-3)-2-acetamido-2-deoxy-alpha-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
J
3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G31883CF
GlyCosmos:  G31883CF
GlyGen:  G31883CF
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.219 
  • Space Group: P 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 112.112α = 90
b = 82.36β = 101.26
c = 117.184γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
PHASESphasing
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

  • Released Date: 2009-07-28 
  • Deposition Author(s): Pang, S.S.

Revision History  (Full details and data files)

  • Version 1.0: 2009-07-28
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Structure summary
  • Version 2.1: 2023-11-01
    Changes: Data collection, Database references, Refinement description, Structure summary