1FYT

CRYSTAL STRUCTURE OF A COMPLEX OF A HUMAN ALPHA/BETA-T CELL RECEPTOR, INFLUENZA HA ANTIGEN PEPTIDE, AND MHC CLASS II MOLECULE, HLA-DR1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.221 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of a covalently stabilized complex of a human alphabeta T-cell receptor, influenza HA peptide and MHC class II molecule, HLA-DR1.

Hennecke, J.Carfi, A.Wiley, D.C.

(2000) EMBO J. 19: 5611-5624

  • DOI: 10.1093/emboj/19.21.5611

  • PubMed Abstract: 
  • An alphabeta T-cell receptor (alphabetaTCR)/hemagglutinin (HA) peptide/human leukocyte antigen (HLA)-DR1 complex was stabilized by flexibly linking the HA peptide with the human HA1.7 alphabetaTCR, to increase the local concentration of the interacti ...

    An alphabeta T-cell receptor (alphabetaTCR)/hemagglutinin (HA) peptide/human leukocyte antigen (HLA)-DR1 complex was stabilized by flexibly linking the HA peptide with the human HA1.7 alphabetaTCR, to increase the local concentration of the interacting proteins once the peptide has been loaded onto the major histocompatibility complex (MHC) molecule. The structure of the complex, determined by X-ray crystallography, has a binding mode similar to that of the human B7 alphabetaTCR on a pMHCI molecule. Twelve of the 15 MHC residues contacted are at the same positions observed earlier in class I MHC/peptide/TCR complexes. One contact, to an MHC loop outside the peptide-binding site, is conserved and specific to pMHCII complexes. TCR gene usage in the response to HA/HLA-DR appears to conserve charged interactions between three lysines of the peptide and acidic residues on the TCR.


    Organizational Affiliation

    Department of Molecular and Cellular Biology, Harvard University, Howard Hughes Medical Institute, 7 Divinity Avenue, Cambridge, MA 02138, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HLA CLASS II HISTOCOMPATIBILITY ANTIGEN, DR ALPHA CHAIN
A
181Homo sapiensMutation(s): 0 
Gene Names: HLA-DRA (HLA-DRA1)
Find proteins for P01903 (Homo sapiens)
Go to Gene View: HLA-DRA
Go to UniProtKB:  P01903
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
HLA CLASS II HISTOCOMPATIBILITY ANTIGEN, DR-1 BETA CHAIN
B
192Homo sapiensMutation(s): 0 
Gene Names: HLA-DRB1
Find proteins for P04229 (Homo sapiens)
Go to Gene View: HLA-DRB1
Go to UniProtKB:  P04229
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
HEMAGGLUTININ HA1 PEPTIDE CHAIN
C
13Influenza A virus (strain A/Aichi/2/1968 H3N2)Mutation(s): 0 
Gene Names: HA
Find proteins for P03437 (Influenza A virus (strain A/Aichi/2/1968 H3N2))
Go to UniProtKB:  P03437
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
T-CELL RECEPTOR ALPHA CHAIN
D
212Homo sapiensMutation(s): 0 
Gene Names: TRAC (TCRA)
Find proteins for P01848 (Homo sapiens)
Go to UniProtKB:  P01848
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
T-CELL RECEPTOR BETA CHAIN
E
245Homo sapiensMutation(s): 1 
Gene Names: TRBC1
Find proteins for P01850 (Homo sapiens)
Go to UniProtKB:  P01850
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download SDF File 
Download CCD File 
A
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.221 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 142.902α = 90.00
b = 73.439β = 108.23
c = 122.428γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-11-08
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance
  • Version 1.3: 2018-01-31
    Type: Experimental preparation