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 
  • R-Value Observed: 0.242 

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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
  • Primary Citation of Related Structures:  
    2ICW

  • 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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HLA class II histocompatibility antigen, DR alpha chainAD179Homo sapiensMutation(s): 3 
Gene Names: HLA-DRAHLA-DRA1
Find proteins for P01903 (Homo sapiens)
Explore P01903 
Go to UniProtKB:  P01903
NIH Common Fund Data Resources
PHAROS  P01903
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
HLA class II histocompatibility antigen, DRB1-1 beta chainBE190Homo sapiensMutation(s): 0 
Gene Names: HLA-DRB1
Find proteins for P01911 (Homo sapiens)
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Go to UniProtKB:  P01911
NIH Common Fund Data Resources
PHAROS  P01911
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
haemagglutinin peptideCF13N/AMutation(s): 0 
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Mycoplasma arthritidis mitogenGH213Mycoplasma arthritidisMutation(s): 0 
Find proteins for Q48898 (Mycoplasma arthritidis)
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Go to UniProtKB:  Q48898
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  • Reference Sequence
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
T-cell receptor alpha chain VIK110Mus musculusMutation(s): 2 
Find proteins for P01738 (Mus musculus)
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Go to UniProtKB:  P01738
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  • Reference Sequence
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
T-cell receptor beta chain VJL113Mus musculusMutation(s): 3 
Find proteins for A2NTY6 (Mus musculus)
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Go to UniProtKB:  A2NTY6
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A,DL-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 
  • R-Value Observed: 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
CBASSdata collection
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

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