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: 2.50 Å
  • R-Value Work: 0.278 
  • R-Value Observed: 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

  • DOI: 10.1016/0092-8674(93)90490-h
  • Primary Citation of Related Structures:  
    1HHH, 1HHG, 1HHK, 1HHJ, 1HHI

  • 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: 
    • 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 U S A 89: 3429
    • 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 U S A 88: 11276
    • 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
    • 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
    • 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

    Organizational Affiliation

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



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CLASS I HISTOCOMPATIBILITY ANTIGEN (HLA-A*0201) (ALPHA CHAIN)AD275Homo sapiensMutation(s): 0 
Gene Names: BETA-2-MICROGLOBULINHLA-AHLAA
Find proteins for P04439 (Homo sapiens)
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Go to UniProtKB:  P04439
NIH Common Fund Data Resources
PHAROS  P04439
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
BETA 2-MICROGLOBULINBE100Homo sapiensMutation(s): 0 
Gene Names: BETA-2-MICROGLOBULINB2MCDABP0092HDCMA22P
Find proteins for P61769 (Homo sapiens)
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Go to UniProtKB:  P61769
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PHAROS  P61769
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
HIV-1 REVERSE TRANSCRIPTASE (RESIDUES 309-317)CF9Human immunodeficiency virus 1Mutation(s): 0 
EC: 3.4.23.16 (UniProt), 2.7.7.49 (UniProt), 2.7.7.7 (UniProt), 3.1.26.13 (UniProt), 3.1.13.2 (UniProt), 2.7.7 (UniProt), 3.1 (UniProt)
Find proteins for P04588 (Human immunodeficiency virus type 1 group M subtype A (isolate MAL))
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Work: 0.278 
  • R-Value Observed: 0.278 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.37α = 81.53
b = 63.6β = 75.72
c = 74.75γ = 77.48
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

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