1HHJ

THE ANTIGENIC IDENTITY OF PEPTIDE(SLASH)MHC COMPLEXES: A COMPARISON OF THE CONFORMATION OF FIVE PEPTIDES PRESENTED BY HLA-A2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Work: 0.278 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The antigenic identity of peptide-MHC complexes: a comparison of the conformations of five viral peptides presented by HLA-A2.

Madden, D.R.Garboczi, D.N.Wiley, D.C.

(1993) Cell 75: 693-708

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Complexes of five peptides (from HIV-1, influenza A virus, HTLV-1, and hepatitis B virus proteins) bound to the human class I MHC molecule HLA-A2 have been studied by X-ray crystallography. While the peptide termini and their second and C-terminal an ...

    Complexes of five peptides (from HIV-1, influenza A virus, HTLV-1, and hepatitis B virus proteins) bound to the human class I MHC molecule HLA-A2 have been studied by X-ray crystallography. While the peptide termini and their second and C-terminal anchor side chains are bound similarly in all five cases, the main chain and side chain conformations of each peptide are strikingly different in the center of the binding site, and these differences are accessible to direct TCR recognition. Each of the central peptide residues is seen to point up for some bound peptides, but down or sideways for others. Thus, although fixed at its ends, the structure of an MHC-bound peptide appears to be a highly complex function of its entire sequence, potentially sensitive to even small sequence differences. In contrast, MHC structural variation is relatively limited. These results offer a structural framework for understanding the role of nonanchor peptide side chains in both peptide-MHC binding affinity and TCR recognition.


    Related Citations: 
    • An Optimal Viral Peptide Recognized by Cd8+ T Cells Binds Very Tightly to the Restricting Class I Major Histocompatibility Complex Protein on Intact Cells But not to the Purified Class I Protein
      Tsomides, T.J.,Walker, B.D.,Eisen, H.N.
      (1991) Proc.Natl.Acad.Sci.USA 88: 11276
    • The Foreign Antigen Binding Site and T Cell Recognition Regions of Class I Histocompatibility Antigens
      Bjorkman, P.J.,Saper, M.A.,Samraoui, B.,Bennett, W.S.,Strominger, J.L.,Wiley, D.C.
      (1987) Nature 329: 512
    • Crystallization and X-Ray Diffraction Studies on the Histocompatibility Antigens Hla-A2 and Hla-A28 from Human Cell Membranes
      Bjorkman, P.J.,Strominger, J.L.,Wiley, D.C.
      (1985) J.Mol.Biol. 186: 205
    • Refined Structure of the Human Histocompatibility Antigen Hla-A2 at 2.6 Angstroms Resolution
      Saper, M.A.,Bjorkman, P.J.,Wiley, D.C.
      (1991) J.Mol.Biol. 219: 277
    • Structure of the Human Class I Histocompatibility Antigen, Hla-A2
      Bjorkman, P.J.,Saper, M.A.,Samraoui, B.,Bennett, W.S.,Strominger, J.L.,Wiley, D.C.
      (1987) Nature 329: 506
    • Hla-A2-Peptide Complexes: Refolding and Crystallization of Molecules Expressed in Escherichia Coli and Complexed with Single Antigenic Peptides
      Garboczi, D.N.,Hung, D.T.,Wiley, D.C.
      (1992) Proc.Natl.Acad.Sci.USA 89: 3429
    • The Three-Dimensional Structure of Hla-B27 at 2.1 Angstroms Resolution Suggests a General Mechanism for Tight Peptide Binding to Mhc
      Madden, D.R.,Gorga, J.C.,Strominger, J.L.,Wiley, D.C.
      (1992) Cell 70: 1035


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Howard Hughes Medical Institute, Harvard University, Cambridge, Massachusetts 02138.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CLASS I HISTOCOMPATIBILITY ANTIGEN (HLA-A*0201) (ALPHA CHAIN)
A, D
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, E
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
HIV-1 REVERSE TRANSCRIPTASE (RESIDUES 309-317)
C, F
9Human immunodeficiency virus type 1 group M subtype AMutation(s): 0 
Gene Names: gag-pol
Find proteins for P04588 (Human immunodeficiency virus type 1 group M subtype A)
Go to UniProtKB:  P04588
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Work: 0.278 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 50.370α = 81.53
b = 63.600β = 75.72
c = 74.750γ = 77.48
Software Package:
Software NamePurpose
X-PLORrefinement
X-PLORphasing
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1993-10-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance