KIR2DL3 Monoclonal Antibody (GL183), Invitrogen™

Description

Natural killer (NK) cells in teleosts and their evolutionary homologue are a subpopulation of lymphocytes with properties that distinguish them from either B- or T-cells. NK cells are important effectors of innate immunity where they release cytokines, which in turn up-regulate other immunological functions. Monoclonal antibodies have been used to identify different surface antigens present on NK cells. These surface antigens have not only been used to identify NK cells, but also their functionally distinct subsets. The Cluster of Differentiation (CD) nomenclature was established to standardize the naming of NK cells.

NKAT (NK-associated transcripts) gene products, known as killer immuno-globulin-like receptors or KIRs, downregulate the cytotoxicity of NK cells upon recognition of specific class I major histocompatibility complex (MHC) molecules on target cells. This family of receptors is characterized by an extracellular region with two to three immunoglobulin-superfamily domains and a cytoplasmic domain with an antigen receptor activation motif (ARAM). KIRs and other inhibitory receptors also possess a common cytoplasmic sequence (I/VxYxxL/V) known as an ITIM (immunoreceptor tyrosine-based inhibitory motif). The human inhibitory human killer cell immunoglobulin-like receptor 2DL3 (KIR2DL3), also referred to as CD158b, is an inhibitory receptor that is specific for the human MHC class I molecule HLA-Cw3 and related alleles.