1NKR

INHIBITORY RECEPTOR (P58-CL42) FOR HUMAN NATURAL KILLER CELLS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.227 
  • R-Value Observed: 0.205 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of the inhibitory receptor for human natural killer cells resembles haematopoietic receptors.

Fan, Q.R.Mosyak, L.Winter, C.C.Wagtmann, N.Long, E.O.Wiley, D.C.

(1997) Nature 389: 96-100

  • DOI: 10.1038/38028
  • Primary Citation of Related Structures:  
    1NKR

  • PubMed Abstract: 
  • Abnormal cells deficient in class I major histocompatibility complex (MHC) expression are lysed by a class of lymphocytes called natural killer (NK) cells. This lysis provides a defence against pathogens and tumour cells that downregulate MHC expression to avoid an MHC-restricted, T-cell immune response ...

    Abnormal cells deficient in class I major histocompatibility complex (MHC) expression are lysed by a class of lymphocytes called natural killer (NK) cells. This lysis provides a defence against pathogens and tumour cells that downregulate MHC expression to avoid an MHC-restricted, T-cell immune response. Normal cells escape lysis because their MHC molecules are recognized by NK-cell inhibitory receptors, which inhibit lysis. Several such inhibitory receptor families have been described in humans and mice. In the human killer-cell inhibitory receptor family, individual p58 members are specific for a subset of class I human leukocyte antigen (HLA)-C molecules. The human p58 natural killer-cell inhibitory receptor clone 42 recognizes HLA-Cw4, -Cw2 and -Cw6, but not HLA-Cw3, -Cw2, -Cw7 or -Cw8, which are recognized by p58 killer-cell inhibitor receptor clone 43. We have determined the X-ray structure of the p58 NK-cell inhibitory receptor clone 42 at 1.7-A resolution. The structure has tandem immunoglobulin-like domains positioned at an acute, 60-degree angle. Loops on the outside of the elbow between the domains form a binding site projected away from the NK-cell surface. The topology of the domains and their arrangement relative to each other reveal a relationship to the haematopoietic receptor family, with implications for the signalling mechanism in NK cells.


    Organizational Affiliation

    Department of Molecular and Cellular Biology, Howard Hughes Medical Institute, Harvard University, Cambridge, Massachusetts 02138, USA. fan@crystal.harvard.edu



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
P58-CL42 KIRA201Homo sapiensMutation(s): 0 
Gene Names: KIR2DL1CD158ANKAT1
UniProt & NIH Common Fund Data Resources
Find proteins for P43626 (Homo sapiens)
Explore P43626 
Go to UniProtKB:  P43626
PHAROS:  P43626
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.227 
  • R-Value Observed: 0.205 
  • Space Group: P 61
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 92.36α = 90
b = 92.36β = 90
c = 46.77γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
MLPHAREphasing
REFMACrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-11-11
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance