1BD2

COMPLEX BETWEEN HUMAN T-CELL RECEPTOR B7, VIRAL PEPTIDE (TAX) AND MHC CLASS I MOLECULE HLA-A 0201


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.312 
  • R-Value Work: 0.238 

wwPDB Validation 3D Report Full Report


This is version 1.5 of the entry. See complete history

Literature

Two human T cell receptors bind in a similar diagonal mode to the HLA-A2/Tax peptide complex using different TCR amino acids.

Ding, Y.H.Smith, K.J.Garboczi, D.N.Utz, U.Biddison, W.E.Wiley, D.C.

(1998) Immunity 8: 403-411


  • PubMed Abstract: 
  • The three-dimensional structure of a human alphabeta T cell receptor (TCR), B7, bound to the HLA-A2 molecule/HTLV-1 Tax peptide complex was determined by x-ray crystallography. Although different from the A6 TCR, previously studied, in 16 of the 17 r ...

    The three-dimensional structure of a human alphabeta T cell receptor (TCR), B7, bound to the HLA-A2 molecule/HTLV-1 Tax peptide complex was determined by x-ray crystallography. Although different from the A6 TCR, previously studied, in 16 of the 17 residues that contact HLA-A2/Tax, the B7 TCR binds in a similar diagonal manner, only slightly tipped and rotated, relative to the A6 TCR. The structure explains data from functional assays on the specificity differences between the B7 and A6 TCRs for agonist, partial agonist, and null peptides. The existence of a structurally similar diagonal binding mode for TCRs favors mechanisms based on the formation of geometrically defined supramolecular assemblies for initiating signaling.


    Related Citations: 
    • Structure of the Complex between Human T-Cell Receptor, Viral Peptide and Hla-A2
      Garboczi, D.N.,Ghosh, P.,Utz, U.,Fan, Q.R.,Biddison, W.E.,Wiley, D.C.
      (1996) Nature 384: 134


    Organizational Affiliation

    Department of Molecular and Cellular Biology, Harvard University, Howard Hughes Medical Institute, Cambridge, Massachusetts 02138, USA. ding@crystal.harvard.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HLA-A 0201
A
275Homo sapiensMutation(s): 0 
Gene Names: HLA-A (HLAA)
Find proteins for P01892 (Homo sapiens)
Go to Gene View: HLA-A
Go to UniProtKB:  P01892
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
BETA-2 MICROGLOBULIN
B
100Homo sapiensMutation(s): 0 
Gene Names: B2M
Find proteins for P61769 (Homo sapiens)
Go to Gene View: B2M
Go to UniProtKB:  P61769
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
TAX PEPTIDE
C
9Human T-cell leukemia virus 1Mutation(s): 0 
Gene Names: tax
Find proteins for P14079 (Human T-cell leukemia virus 1)
Go to UniProtKB:  P14079
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
T CELL RECEPTOR ALPHA
D
204Homo sapiensMutation(s): 0 
Gene Names: TRAV29DV5, TRAC (TCRA)
Find proteins for P04437 (Homo sapiens)
Go to UniProtKB:  P04437
Find proteins for P01848 (Homo sapiens)
Go to UniProtKB:  P01848
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
T CELL RECEPTOR BETA
E
244Homo sapiensMutation(s): 0 
Gene Names: TRBV6-5, TRBC2 (TCRBC2)
Find proteins for A0A0K0K1A5 (Homo sapiens)
Go to UniProtKB:  A0A0K0K1A5
Find proteins for A0A5B9 (Homo sapiens)
Go to UniProtKB:  A0A5B9
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.312 
  • R-Value Work: 0.238 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 63.800α = 90.00
b = 73.300β = 90.00
c = 217.700γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
X-PLORphasing
SCALEPACKdata scaling
X-PLORrefinement
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-08-19
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2012-12-12
    Type: Other
  • Version 1.4: 2013-03-13
    Type: Other
  • Version 1.5: 2016-05-25
    Type: Structure summary