1HXM

Crystal Structure of a Human Vgamma9/Vdelta2 T Cell Receptor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.12 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.219 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of a human gammadelta T-cell antigen receptor.

Allison, T.J.Winter, C.C.Fournie, J.J.Bonneville, M.Garboczi, D.N.

(2001) Nature 411: 820-824

  • DOI: 10.1038/35081115

  • PubMed Abstract: 
  • T-cell antigen receptors composed of gamma and delta polypeptide chains (gammadelta TCRs) can directly recognize antigens in the form of intact proteins or non-peptide compounds, unlike alphabeta TCRs, which recognize antigens bound to major histocom ...

    T-cell antigen receptors composed of gamma and delta polypeptide chains (gammadelta TCRs) can directly recognize antigens in the form of intact proteins or non-peptide compounds, unlike alphabeta TCRs, which recognize antigens bound to major histocompatibility complex molecules (MHC). About 5% of peripheral blood T cells bear gammadelta TCRs, most of which recognize non-peptide phosphorylated antigens. Here we describe the 3.1 A resolution structure of a human gammadelta TCR from a T-cell clone that is phosphoantigen-reactive. The orientation of the variable (V) and constant (C) regions of the gammadelta TCR is unique when compared with alphabeta TCRs or antibodies, and results from an unusually small angle between the Vgamma and Cgamma domains. The complementarity-determining regions (CDRs) of the V domains exhibit a chemically reasonable binding site for phosphorylated antigens, providing a possible explanation for the canonical usage of the Vgamma9 and Vdelta2 gene segments by phosphoantigen-reactive receptors. Although the gammadelta TCR V domains are similar in overall structure to those of alphabeta TCRs, gammadelta TCR C domains are markedly different. Structural differences in Cgamma and Cdelta, and in the location of the disulphide bond between them, may enable gammadelta TCRs to form different recognition/signalling complexes than alphabeta TCRs.


    Related Citations: 
    • Stimulation of human gamma delta T cells by nonpeptidic mycobaterial ligands
      Constant, P.,Davodeau, F.,Peyrat, M.A.,Poquet, Y.,Puzo, G.,Bonneville, M.,Fournie, J.J.
      (1994) Science 264: 267
    • Peripheral selection of antigen receptor junctional features in a major human gamma delta subset
      Davodeau, F.,Peyrat, M.A.,Hallet, M.M.,Houde, I.,Vie, H.,Bonneville, M.
      (1993) EUR.J.IMMUNOL. 23: 804


    Organizational Affiliation

    Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, Rockville, Maryland 20852, USA. tallison@niaid.nih.gov




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GAMMA-DELTA T-CELL RECEPTOR
A, C, E, G
229Homo sapiensGene Names: TRDC
Find proteins for B7Z8K6 (Homo sapiens)
Go to UniProtKB:  B7Z8K6
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
GAMMA-DELTA T-CELL RECEPTOR
B, D, F, H
242Homo sapiensGene Names: TRGC2 (TCRGC2)
Find proteins for P03986 (Homo sapiens)
Go to UniProtKB:  P03986
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
D, F
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.12 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.219 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 74.048α = 90.00
b = 151.736β = 99.48
c = 97.873γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
SHARPphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-06-20
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-04
    Type: Refinement description