2ICW

Crystal structure of a complete ternary complex between TCR, superantigen, and peptide-MHC class II molecule

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.41 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.242 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 

Literature

Crystal structure of a complete ternary complex of TCR, superantigen and peptide-MHC.

Wang, L., Zhao, Y., Li, Z., Guo, Y., Jones, L.L., Kranz, D.M., Mourad, W., Li, H.

(2007) Nat.Struct.Mol.Biol. 14: 169-171

  • DOI: 10.1038/nsmb1193

  • PubMed Abstract: 

    • 'Superantigens' (SAgs) trigger the massive activation of T cells by simultaneous interactions with MHC and TCR receptors, leading to human diseases. Here we present the first crystal structure, at 2.5-A resolution, of a complete ternary complex betwe ...

    'Superantigens' (SAgs) trigger the massive activation of T cells by simultaneous interactions with MHC and TCR receptors, leading to human diseases. Here we present the first crystal structure, at 2.5-A resolution, of a complete ternary complex between a SAg and its two receptors, HLA-DR1/HA and TCR. The most striking finding is that the SAg Mycoplasma arthritidis mitogen, unlike others, has direct contacts not only with TCR Vbeta but with TCR Valpha.

    Organizational Affiliation: 

    Wadsworth Center, New York State Department of Health, Albany, New York 12201, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HLA class II histocompatibility antigen, DR alpha chain
A, D
179Homo sapiensMutation(s): 0 
Gene Names: HLA-DRA (HLA-DRA1)
Find proteins for P01903 (Homo sapiens)
Go to Gene View: HLA-DRA
Go to UniProtKB:  P01903
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
HLA class II histocompatibility antigen, DRB1-1 beta chain
B, E
190Homo sapiensMutation(s): 0 
Gene Names: HLA-DRB1
Find proteins for P04229 (Homo sapiens)
Go to Gene View: HLA-DRB1
Go to UniProtKB:  P04229
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
haemagglutinin peptide
C, F
13N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Mycoplasma arthritidis mitogen
G, H
213Mycoplasma arthritidisMutation(s): 0 
Find proteins for Q48898 (Mycoplasma arthritidis)
Go to UniProtKB:  Q48898
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
T-cell receptor alpha chain V
I, K
110Mus musculusMutation(s): 2 
Find proteins for P01738 (Mus musculus)
Go to UniProtKB:  P01738
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
T-cell receptor beta chain V
J, L
113Mus musculusMutation(s): 3 
Find proteins for A2NTY6 (Mus musculus)
Go to UniProtKB:  A2NTY6
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, D
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.41 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.242 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 61.516α = 110.27
b = 86.822β = 92.32
c = 116.981γ = 107.87
Software Package:
Software NamePurpose
CNSrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
CBASSdata collection
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-03-20
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance