Natural Killer Cell Receptor 2B4

E6860Hu

Sandwich

48T,96T

0.13ng/ml

0.3-90ng/ml

Serum, plasma, cell culture supernates

Human

2-8ºC

1h 30m

Heterophilic receptor of the signaling lymphocytic activation molecule (SLAM) family; its ligand is CD48. SLAM receptors triggered by homo- or heterotypic cell-cell interactions are modulating the activation and differentiation of a wide variety of immune cells and thus are involved in the regulation and interconnection of both innate and adaptive immune response. Activities are controlled by presence or absence of small cytoplasmic adapter proteins, SH2D1A/SAP and/or SH2D1B/EAT-2. Acts as activating natural killer (NK) cell receptor (PubMed: 10359122, PubMed: 8376943, PubMed: 11714776). Activating function implicates association with SH2D1A and FYN (PubMed: 15713798). Downstreaming signaling involves predominantly VAV1, and, to a lesser degree, INPP5D/SHIP1 and CBL. Signal attenuation in the absence of SH2D1A is proposed to be dependent on INPP5D and to a lesser extent PTPN6/SHP-1 and PTPN11/SHP-2 (PubMed: 10934222, PubMed: 15713798). Stimulates NK cell cytotoxicity, production of IFN-gamma and granule exocytosis (PubMed: 8376943, PubMed: 11714776). Optimal expansion and activation of NK cells seems to be dependent on the engagement of CD244 with CD48 expressed on neighboring NK cells (By similarity). Acts as costimulator in NK activation by enhancing signals by other NK receptors such as NCR3 and NCR1 (PubMed: 10741393). At early stages of NK cell differentiation may function as an inhibitory receptor possibly ensuring the self-tolerance of developing NK cells (PubMed: 11917118). Involved in the regulation of CD8(+) T-cell proliferation; expression on activated T-cells and binding to CD488 provides costimulatory-like function for neighboring T-cells (By similarity). Inhibits inflammatory responses in dendritic cells (DCs) (By similarity).

41,616

51744

CD 244;CD antigen CD244;CD244;h2B4;NAIL;Natural killer cell receptor 2B4;NK cell activation-inducing ligand;NK cell type I receptor protein 2B4;NKR2B4;Signaling lymphocytic activation molecule 4;SLAM family member 4;SLAMF4

CD244

Immunology

CD244