1NKR

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.227 

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

  • 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 express ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
P58-CL42 KIR
A
201Homo sapiensGene Names: KIR2DL1 (CD158A, NKAT1)
Find proteins for P43626 (Homo sapiens)
Go to Gene View: KIR2DL1
Go to UniProtKB:  P43626
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.227 
  • Space Group: P 61
Unit Cell:
Length (Å)Angle (°)
a = 92.360α = 90.00
b = 92.360β = 90.00
c = 46.770γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
REFMACrefinement
MLPHAREphasing
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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