STAP2 Polyclonal Antibody

Protein kinases comprise a large group of encoded factors that regulate cellular processes by catalyzing the transfer of a phosphate group to a hydroxyl acceptor in serine, threonine or tyrosine residues (1,2) . Kinases are capable of influencing the oncogenic potential of cell sytems at the level of oncoprotein or tumor suppressor protein phosphorylation states (1,2) . STAP-2 is a protein that contains a pleckstrin homology (PH) domain and an SH2 domain, and associates with BRK (3) . BRK (breast tumor kinase, Sik) is a 451 amino acid, nonreceptor protein-tyrosine kinase that is overexpressed in breast tumors and metastatic melanoma cell lines (4) . Similar to the Src family of intracellular kinses, BRK is comprised of an SH3 domain, an SH2 domain, and a catalytic domain (5) . STAP-2 is susceptiple to tyrosine phosphorylation and may be invovled in tyrosine kinase-mediated signaling cascades, whose aberrant function may lead to metastis (3) .

BKS; Breast tumor kinase substrate; BRK substrate; Signal transducing adaptor protein 2; Signal-transducing adaptor protein 2; Ssignal transducing adaptor family member 2; STAP 2; STAP-2; STAP2; STAP2_HUMAN.