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 
  • R-Value Observed: 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

  • DOI: 10.1016/s1097-2765(00)80053-2
  • Primary Citation of Related Structures:  
    1MHE

  • 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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HLA CLASS I HISTOCOMPATIBILITY ANTIGEN HLA-EAC274Homo sapiensMutation(s): 0 
Gene Names: HLA-EHLA-6.2HLAE
Find proteins for P13747 (Homo sapiens)
Explore P13747 
Go to UniProtKB:  P13747
NIH Common Fund Data Resources
PHAROS  P13747
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
BETA-2-MICROGLOBULINBD100Homo sapiensMutation(s): 0 
Gene Names: BETA-2-MICROGLOBULINB2MCDABP0092HDCMA22P
Find proteins for P61769 (Homo sapiens)
Explore P61769 
Go to UniProtKB:  P61769
NIH Common Fund Data Resources
PHAROS  P61769
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
PEPTIDE (VMAPRTVLL)PQ9N/AMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

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 
  • R-Value Observed: 0.202 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 182.2α = 90
b = 182.2β = 90
c = 88.4γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

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