Entrez Summary: Killer cell immunoglobulin-like receptors (KIRs) are transmembrane glycoproteins expressed by natural killer cells and subsets of T cells. The KIR genes are polymorphic and highly homologous and they are found in a cluster on chromosome 19q13.4 within the 1 Mb leukocyte receptor complex (LRC). The gene content of the KIR gene cluster varies among haplotypes, although several 'framework' genes are found in all haplotypes (KIR3DL3, KIR3DP1, KIR3DL4, KIR3DL2). The KIR proteins are classified by the number of extracellular immunoglobulin domains (2D or 3D) and by whether they have a long (L) or short (S) cytoplasmic domain. KIR proteins with the long cytoplasmic domain transduce inhibitory signals upon ligand binding via an immune tyrosine-based inhibitory motif (ITIM), while KIR proteins with the short cytoplasmic domain lack the ITIM motif and instead associate with the TYRO protein tyrosine kinase binding protein to transduce activating signals. The ligands for several KIR proteins are subsets of HLA class I molecules; thus, KIR proteins are thought to play an important role in regulation of the immune response. [provided by RefSeq, Jul 2008].
UniProt Summary: Receptor on natural killer (NK) cells for HLA Bw4 allele. Inhibits the activity of NK cells thus preventing cell lysis. {ECO:0000269|PubMed:22020283}.
Pfam DomainsGO Terms
Pfam Domains
ig
GO Terms
HLA-B specific inhibitory MHC class I receptor activity
natural killer cell mediated cytotoxicity
natural killer cell mediated immunity
leukocyte mediated cytotoxicity
amyloid-beta binding
cell killing
lymphocyte mediated immunity
leukocyte mediated immunity
innate immune response
defense response to other organism
immune effector process
regulation of immune response
response to other organism
response to external biotic stimulus
response to biotic stimulus
defense response
integral component of plasma membrane
regulation of immune system process
immune response
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)
Compound Hit
No hits were found.
Most Correlated Genes in Chemogenomics
No correlation found to any other genes in chemogenomics.
Tissues where Essential in the Avana Dataset (DepMap 20Q1)
Global Fraction of Cell Lines Where Essential: 0/739