1HYR

CRYSTAL STRUCTURE OF HUMAN MICA IN COMPLEX WITH NATURAL KILLER CELL RECEPTOR NKG2D


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.227 
  • R-Value Observed: 0.227 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Complex structure of the activating immunoreceptor NKG2D and its MHC class I-like ligand MICA.

Li, P.Morris, D.L.Willcox, B.E.Steinle, A.Spies, T.Strong, R.K.

(2001) Nat Immunol 2: 443-451

  • DOI: 10.1038/87757
  • Primary Citation of Related Structures:  
    1HYR

  • PubMed Abstract: 
  • The major histocompatibility complex (MHC) class I homolog, MICA, is a stress-inducible ligand for NKG2D, a C-type lectin-like activating immunoreceptor. The crystal structure of this ligand-receptor complex that we report here reveals an NKG2D homod ...

    The major histocompatibility complex (MHC) class I homolog, MICA, is a stress-inducible ligand for NKG2D, a C-type lectin-like activating immunoreceptor. The crystal structure of this ligand-receptor complex that we report here reveals an NKG2D homodimer bound to a MICA monomer in an interaction that is analogous to that seen in T cell receptor-MHC class I protein complexes. Similar surfaces on each NKG2D monomer interact with different surfaces on either the alpha1 or alpha2 domains of MICA. The binding interactions are large in area and highly complementary. The central section of the alpha2-domain helix, disordered in the structure of MICA alone, is ordered in the complex and forms part of the NKG2D interface. The extensive flexibility of the interdomain linker of MICA is shown by its altered conformation when crystallized alone or in complex with NKG2D.


    Related Citations: 
    • Crystal Structure of the MHC Class I Homolog Mic-A, a Gammadelta T Cell Ligand
      Li, P., Willie, S.T., Bauer, S., Morris, D.L., Spies, T., Strong, R.K.
      (1999) Immunity 10: 577
    • ACTIVATION OF NK CELLS AND T CELLS BY NKG2D, A RECEPTOR FOR STRESS INDUCIBLE MICA
      Bauer, S., Groh, V., Wu, J., Steinle, A., Phillips, J.H., Lanier, L.L., Spies, T.
      (1999) Science 285: 727

    Organizational Affiliation

    Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98109 USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
NKG2-D TYPE II INTEGRAL MEMBRANE PROTEINAB137Homo sapiensMutation(s): 0 
Gene Names: NKG2DKLRK1D12S2489E
Find proteins for P26718 (Homo sapiens)
Explore P26718 
Go to UniProtKB:  P26718
NIH Common Fund Data Resources
PHAROS  P26718
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
MHC CLASS I CHAIN-RELATED PROTEIN AC275Homo sapiensMutation(s): 0 
Gene Names: MICA-001MICAPERB11.1
Find proteins for Q29983 (Homo sapiens)
Explore Q29983 
Go to UniProtKB:  Q29983
NIH Common Fund Data Resources
PHAROS  Q29983
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.227 
  • R-Value Observed: 0.227 
  • Space Group: P 4 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 122.78α = 90
b = 122.78β = 90
c = 101.82γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
CNSphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2001-01-21 
  • Released Date: 2001-05-23 
  • Deposition Author(s): Li, P., Strong, R.K.

Revision History 

  • Version 1.0: 2001-05-23
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance