4UDT

T cell receptor (TRAV22,TRBV7-9) structure


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.156 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of Staphylococcal Enterotoxin E in Complex with Tcr Defines the Role of Tcr Loop Positioning in Superantigen Recognition.

Rodstrom, K.E.J.Regenthal, P.Lindkvist-Petersson, K.

(2015) Plos One 10: 01318

  • DOI: 10.1371/journal.pone.0131988
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • T cells are crucial players in cell-mediated immunity. The specificity of their receptor, the T cell receptor (TCR), is central for the immune system to distinguish foreign from host antigens. Superantigens are bacterial toxins capable of inducing a ...

    T cells are crucial players in cell-mediated immunity. The specificity of their receptor, the T cell receptor (TCR), is central for the immune system to distinguish foreign from host antigens. Superantigens are bacterial toxins capable of inducing a toxic immune response by cross-linking the TCR and the major histocompatibility complex (MHC) class II and circumventing the antigen specificity. Here, we present the structure of staphylococcal enterotoxin E (SEE) in complex with a human T cell receptor, as well as the unligated T cell receptor structure. There are clear structural changes in the TCR loops upon superantigen binding. In particular, the HV4 loop moves to circumvent steric clashes upon complex formation. In addition, a predicted ternary model of SEE in complex with both TCR and MHC class II displays intermolecular contacts between the TCR α-chain and the MHC, suggesting that the TCR α-chain is of importance for complex formation.


    Organizational Affiliation

    Department of Experimental Medical Science, Lund University, BMC C13, 22 184, Lund, Sweden.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
T CELL RECEPTOR ALPHA CHAIN, T-CELL RECEPTOR ALPHA CHAIN C REGION
A
206Homo sapiensMutation(s): 1 
Gene Names: TRAV22, TRAC (TCRA)
Find proteins for A0A0B4J277 (Homo sapiens)
Go to UniProtKB:  A0A0B4J277
Find proteins for P01848 (Homo sapiens)
Go to UniProtKB:  P01848
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROTEIN TRBV7-9, T-CELL RECEPTOR BETA-2 CHAIN C REGION
B
243Homo sapiensMutation(s): 4 
Gene Names: TCRBV6S4A1, TRBC2 (TCRBC2)
Find proteins for A0A5A3 (Homo sapiens)
Go to UniProtKB:  A0A5A3
Find proteins for A0A5B9 (Homo sapiens)
Go to UniProtKB:  A0A5B9
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.156 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 39.071α = 90.00
b = 79.747β = 105.86
c = 69.035γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
REFMACrefinement
Aimlessdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-06-24
    Type: Initial release
  • Version 1.1: 2015-07-15
    Type: Database references
  • Version 1.2: 2017-03-15
    Type: Source and taxonomy