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



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