5L2J

Crystal Structure of human CD1b in complex with C36-GMM


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.172 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

T cell receptor recognition of CD1b presenting a mycobacterial glycolipid.

Gras, S.Van Rhijn, I.Shahine, A.Cheng, T.Y.Bhati, M.Tan, L.L.Halim, H.Tuttle, K.D.Gapin, L.Le Nours, J.Moody, D.B.Rossjohn, J.

(2016) Nat Commun 7: 13257-13257

  • DOI: 10.1038/ncomms13257
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • CD1 proteins present microbial lipids to T cells. Germline-encoded mycolyl lipid-reactive (GEM) T cells with conserved αβ T cell receptors (TCRs) recognize CD1b presenting mycobacterial mycolates. As the molecular basis underpinning TCR recognition o ...

    CD1 proteins present microbial lipids to T cells. Germline-encoded mycolyl lipid-reactive (GEM) T cells with conserved αβ T cell receptors (TCRs) recognize CD1b presenting mycobacterial mycolates. As the molecular basis underpinning TCR recognition of CD1b remains unknown, here we determine the structure of a GEM TCR bound to CD1b presenting glucose-6-O-monomycolate (GMM). The GEM TCR docks centrally above CD1b, whereby the conserved TCR α-chain extensively contacts CD1b and GMM. Through mutagenesis and study of T cells from tuberculosis patients, we identify a consensus CD1b footprint of TCRs present among GEM T cells. Using both the TCR α- and β-chains as tweezers to surround and grip the glucose moiety of GMM, GEM TCRs create a highly specific mechanism for recognizing this mycobacterial glycolipid.


    Organizational Affiliation

    Infection and Immunity Program, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
T-cell surface glycoprotein CD1b
A
300Homo sapiensMutation(s): 0 
Gene Names: CD1B
Find proteins for P29016 (Homo sapiens)
Go to Gene View: CD1B
Go to UniProtKB:  P29016
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Beta-2-microglobulin
B
98Homo sapiensMutation(s): 0 
Gene Names: B2M
Find proteins for P61769 (Homo sapiens)
Go to Gene View: B2M
Go to UniProtKB:  P61769
Small Molecules
Ligands 9 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
6UL
Query on 6UL

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Download CCD File 
A
TETRACOSYL PALMITATE
C40 H80 O2
KKTAIMZGSAQXRE-UHFFFAOYSA-N
 Ligand Interaction
NA
Query on NA

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Download CCD File 
B
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
ACT
Query on ACT

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A
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
CL
Query on CL

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A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
MAN
Query on MAN

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A
ALPHA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-PQMKYFCFSA-N
 Ligand Interaction
FUC
Query on FUC

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

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A
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
70E
Query on 70E

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A
6-O-[(2R,3R)-3-hydroxy-2-tetradecyldocosanoyl]-alpha-L-idopyranose
C36 GLUCOSE MONOMYCOLATE, C36 GMM
C42 H82 O8
YOCZDGRJDQLKHW-GWLFWXKWSA-N
 Ligand Interaction
NAG
Query on NAG

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.172 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 57.660α = 90.00
b = 78.110β = 90.00
c = 91.330γ = 90.00
Software Package:
Software NamePurpose
BUSTERrefinement
Aimlessdata scaling
XDSdata reduction
PDB_EXTRACTdata extraction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-11-16
    Type: Initial release
  • Version 1.1: 2016-12-07
    Type: Other