Anti-Human CD319 (CRACC) PE

Description: The monoclonal antibody 162 recognizes CRACC (CD2 like receptor for activating cytotoxic cells) also known as CD319 and CS1. It is a member of the SLAM receptor family. CRACC is a 66kDa glycosylated transmembrane protein which contains a cytoplasmic ITSM domain (Immunoreceptor Tyrosine-based Switch Motif). It is this domain, found in other proteins such as CD244 and NTB-A, that interacts with SH2 containing proteins such as SAP. Interestingly the ITSM domain in CRACC is SAP independent. Instead EAT-2 acts as the signaling molecule for CRACC. This has profound impact for patients with X-linked lymphoproliferative disease (contains a SAP mutation). It should be noted that a splice variant has been reported which deletes the ITSM domain.

References: Bouchon A, Cella M, Grierson HL, Cohen JI, Colonna M. Activation of NK cell-mediated cytotoxicity by a SAP-independent receptor of the CD2 family.J Immunol. 2001 Nov 15;167(10):5517-21. (162, FC, FA, IP PubMed)

Tassi I, Colonna M. The cytotoxicity receptor CRACC (CS-1) recruits EAT-2 and activates the PI3K and phospholipase Cgamma signaling pathways in human NK cells.J Immunol. 2005 Dec 15;175(12):7996-8002. (162, FA PubMed)

Veillette A. NK cell regulation by SLAM family receptors and SAP-related adapters.Immunol Rev. 2006 Dec;214:22-34. Review.