1MHE

THE HUMAN NON-CLASSICAL MAJOR HISTOCOMPATIBILITY COMPLEX MOLECULE HLA-E


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.202 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural features impose tight peptide binding specificity in the nonclassical MHC molecule HLA-E.

O'Callaghan, C.A.Tormo, J.Willcox, B.E.Braud, V.M.Jakobsen, B.K.Stuart, D.I.McMichael, A.J.Bell, J.I.Jones, E.Y.

(1998) Mol.Cell 1: 531-541


  • PubMed Abstract: 
  • The crystal structure of the nonclassical human class lb MHC molecule HLA-E has been determined in complex with a prototypic ligand, the nonamer peptide (VMAPRTVLL), derived from the highly conserved residues 3-11 of the human MHC class la leader seq ...

    The crystal structure of the nonclassical human class lb MHC molecule HLA-E has been determined in complex with a prototypic ligand, the nonamer peptide (VMAPRTVLL), derived from the highly conserved residues 3-11 of the human MHC class la leader sequence. The mode of peptide binding retains some of the standard features observed in MHC class la complexes, but novel features imply that HLA-E has evolved to mediate specific binding to a tightly defined set of almost identical hydrophobic peptides from the highly conserved class l leader sequences. These molecular adaptations make HLA-E a rigorous checkpoint at the cell surface reporting on the integrity of the antigen processing pathway to CD94/NKG2 receptor-bearing natural killer cells.


    Related Citations: 
    • Production, Crystallization, and Preliminary X-Ray Analysis of the Human Mhc Class Ib Molecule Hla-E
      O'Callaghan, C.A.,Tormo, J.,Willcox, B.E.,Blundell, C.D.,Jakobsen, B.K.,Stuart, D.I.,Mcmichael, A.J.,Bell, J.I.,Jones, E.Y.
      (1998) Protein Sci. 7: 1264


    Organizational Affiliation

    Nuffield Department of Clinical Medicine, University of Oxford, John Radcliffe Hospital, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HLA CLASS I HISTOCOMPATIBILITY ANTIGEN HLA-E
A, C
274Homo sapiensMutation(s): 0 
Gene Names: HLA-E (HLA-6.2, HLAE)
Find proteins for P13747 (Homo sapiens)
Go to Gene View: HLA-E
Go to UniProtKB:  P13747
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
BETA-2-MICROGLOBULIN
B, D
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
PEPTIDE (VMAPRTVLL)
P, Q
9N/AMutation(s): 0 
N/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.202 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 182.200α = 90.00
b = 182.200β = 90.00
c = 88.400γ = 120.00
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-03-23
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance