1HSA

THE THREE-DIMENSIONAL STRUCTURE OF HLA-B27 AT 2.1 ANGSTROMS RESOLUTION SUGGESTS A GENERAL MECHANISM FOR TIGHT PEPTIDE BINDING TO MHC


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Work: 0.203 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The three-dimensional structure of HLA-B27 at 2.1 A 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: 1035-1048

  • Also Cited By: 1OGT

  • PubMed Abstract: 
  • Cell surface complexes of class I MHC molecules and bound peptide antigens serve as specific recognition elements controlling the cytotoxic immune response. The 2.1 A structure of the human class I MHC molecule HLA-B27 provides a detailed composite i ...

    Cell surface complexes of class I MHC molecules and bound peptide antigens serve as specific recognition elements controlling the cytotoxic immune response. The 2.1 A structure of the human class I MHC molecule HLA-B27 provides a detailed composite image of a co-crystallized collection of HLA-B27-bound peptides, indicating that they share a common main-chain structure and length. It also permits direct visualization of the conservation of arginine as an "anchor" side chain at the second peptide position, which is bound in a potentially HLA-B27-specific pocket and may therefore have a role in the association of HLA-B27 with several diseases. Tight peptide binding to class I MHC molecules appears to result from the extensive contacts found at the ends of the cleft between peptide main-chain atoms and conserved MHC side chains, which also involve the peptide in stabilizing the three-dimensional fold of HLA-B27. The concentration of binding interactions at the peptide termini permits extensive sequence (and probably some length) variability in the center of the peptide, where it is exposed for T cell recognition.


    Related Citations: 
    • 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
    • Specificity Pockets for the Side Chains of Peptide Antigens in Hla-Aw68
      Garrett, T.P.J.,Saper, M.A.,Bjorkman, P.J.,Strominger, J.L.,Wiley, D.C.
      (1989) Nature 342: 692
    • 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
    • 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
    • The Structure of Hla-B27 Reveals Nonamer Self-Peptides Bound in an Extended Conformation
      Madden, D.R.,Gorga, J.C.,Strominger, J.L.,Wiley, D.C.
      (1991) Nature 353: 321
    • Crystallization and Preliminary X-Ray Diffraction Studies of the Human Major Histocompatibility Antigen Hla-B27
      Gorga, J.C.,Madden, D.R.,Prendergast, J.K.,Wiley, D.C.,Strominger, J.L.
      (1992) Proteins 12: 87
    • Identification of Self Peptides Bound to Purified Hla-B27
      Jardetzky, T.S.,Lane, W.S.,Robinson, R.A.,Madden, D.R.,Wiley, D.C.
      (1991) Nature 353: 326
    • 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


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Harvard University, Cambridge, Massachusetts 02138.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CLASS I HISTOCOMPATIBILITY ANTIGEN (HLA-B*2705)
A, D
276Homo sapiensMutation(s): 0 
Gene Names: HLA-B (HLAB)
Find proteins for P03989 (Homo sapiens)
Go to Gene View: HLA-B
Go to UniProtKB:  P03989
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
BETA 2-MICROGLOBULIN
B, E
99Homo 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
MODEL PEPTIDE SEQUENCE - ARAAAAAAA
C, F
9N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Work: 0.203 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 45.100α = 80.30
b = 69.800β = 88.60
c = 81.100γ = 89.90
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORmodel building
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1992-10-15
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance