1SBB

T-CELL RECEPTOR BETA CHAIN COMPLEXED WITH SUPERANTIGEN SEB


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.228 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Three-dimensional structure of the complex between a T cell receptor beta chain and the superantigen staphylococcal enterotoxin B.

Li, H.Llera, A.Tsuchiya, D.Leder, L.Ysern, X.Schlievert, P.M.Karjalainen, K.Mariuzza, R.A.

(1998) Immunity 9: 807-816


  • PubMed Abstract: 
  • Superantigens (SAGs) are a class of immunostimulatory proteins of bacterial or viral origin that activate T cells by binding to the V beta domain of the T cell antigen receptor (TCR). The three-dimensional structure of the complex between a TCR beta ...

    Superantigens (SAGs) are a class of immunostimulatory proteins of bacterial or viral origin that activate T cells by binding to the V beta domain of the T cell antigen receptor (TCR). The three-dimensional structure of the complex between a TCR beta chain (mouse V beta8.2) and the SAG staphylococcal enterotoxin B (SEB) at 2.4 A resolution reveals why SEB recognizes only certain V beta families, as well as why only certain SAGs bind mouse V beta8.2. Models of the TCR-SEB-peptide/MHC class II complex indicate that V alpha interacts with the MHC beta chain in the TCR-SAG-MHC complex. The extent of the interaction is variable and is largely determined by the geometry of V alpha/V beta domain association. This variability can account for the preferential expression of certain V alpha regions among T cells reactive with SEB.


    Organizational Affiliation

    Center for Advanced Research in Biotechnology, University of Maryland Biotechnology Institute, Rockville 20850, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (14.3.D T CELL ANTIGEN RECEPTOR)
A, C
238Mus musculusMutation(s): 3 
Find proteins for P01852 (Mus musculus)
Go to UniProtKB:  P01852
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (STAPHYLOCOCCAL ENTEROTOXIN B)
B, D
239Staphylococcus aureusMutation(s): 0 
Gene Names: entB
Find proteins for P01552 (Staphylococcus aureus)
Go to UniProtKB:  P01552
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.228 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 71.200α = 90.00
b = 83.650β = 93.04
c = 82.980γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
X-PLORrefinement
DENZOdata reduction
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1999-02-22 
  • Released Date: 1999-03-01 
  • Deposition Author(s): Li, H., Mariuzza, R.A.

Revision History 

  • Version 1.0: 1999-03-01
    Type: Initial release
  • Version 1.1: 2008-04-26
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-04
    Type: Advisory, Refinement description