Killer cell immunoglobulin-like receptor 2DS4 is a protein that in humans is encoded by the KIR2DS4gene.[3][4][5]
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.[5]
^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
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Kim J, Chwae YJ, Kim MY, Choi IH, Park JH, Kim SJ (1997). "Molecular basis of HLA-C recognition by p58 natural killer cell inhibitory receptors". J. Immunol. 159 (8): 3875–82. doi:10.4049/jimmunol.159.8.3875. PMID9378975. S2CID21878260.
Chwae YJ, Cho SE, Kim SJ, Kim J (1999). "Diversity of the repertoire of p58 killer cell inhibitory receptors in a single individual". Immunol. Lett. 68 (2–3): 267–74. doi:10.1016/S0165-2478(99)00062-0. PMID10424431.
Maxwell LD, Wallace A, Middleton D, Curran MD (2003). "A common KIR2DS4 deletion variant in the human that predicts a soluble KIR molecule analogous to the KIR1D molecule observed in the rhesus monkey". Tissue Antigens. 60 (3): 254–8. doi:10.1034/j.1399-0039.2002.600307.x. PMID12445308.
Yen JH, Lin CH, Tsai WC, Wu C-, Ou T-, Hu C-, Liu H- (2006). "Killer cell immunoglobulin-like receptor gene's repertoire in rheumatoid arthritis". Scand. J. Rheumatol. 35 (2): 124–7. doi:10.1080/03009740500381252. PMID16641046. S2CID29445959.
