Intracellular Staining by Flow Cytometry
|Detection of DAP12 in Human PBMCs by Flow Cytometry. Human peripheral blood mononuclear cells (PBMCs) were stained with Mouse Anti-Human NCAM‑1/CD56 APC‑conjugated Monoclonal Antibody (Catalog # FAB2408A) and either (A) Mouse Anti-Human DAP12 PE‑conjugated Monoclonal Antibody (Catalog # IC5240P) or (B) Mouse IgG1 Phycoerythrin Isotype Control (Catalog # IC002P). To facilitate intracellular staining, cells were fixed with Flow Cytometry Fixation Buffer (Catalog # FC004) and permeabilized with Flow Cytometry Permeabilization/Wash Buffer I (Catalog # FC005). View our protocol for Staining Intracellular Molecules.|
DAP12, also known as TYROBP and KARAP, is a transmembrane protein that functions as a signal transduction adaptor molecule. DAP12 is expressed as a disulfide-linked homodimer that associates with a variety of receptors on NK and myeloid cells. Complex formation is mediated by intramembrane ionic interaction between an aspartic acid residue in DAP12 and a lysine residue in the partnered receptor. Ligation of these receptors can trigger either cell activation or inhibition through the ITAM sequence in DAP12, resulting in activation of Src family tyrosine kinases. Human and mouse DAP12 share 73% amino acid sequence identity.