Phospho-PAK3 (Ser139) Polyclonal Antibody, APC-Cy5.5 Conjugated

The p21 activated kinases (PAK) are critical effectors that link Rho GTPases to cytoskeleton reorganization and nuclear signaling. The PAK proteins are a family of serine/threonine kinases that serve as targets for the small GTP binding proteins, CDC42 and RAC1, and have been implicated in a wide range of biological activities. The protein encoded by this gene is activated by proteolytic cleavage during caspase-mediated apoptosis, and may play a role in regulating the apoptotic events in the dying cell.P21-activated kinase (PAK) is actually a family of serine/threonine protein kinases, members of which are activated by small molecular weight GTPases. The three most common isoforms are PAK 1, PAK 2, and PAK 3 (also known as alpha PAK, gamma PAK, and beta PAK, respectively) . These kinases contain numerous regulatory elements that trigger diverse signaling processes such as those initiated by activated GTPases, interaction with Src homology 3 (SH3) domains, and caspase mediated proteolytic cleavage. Autophosphorylation of serine 141 (serine 144 for PAK 1 and serine 139 PAK 3), catalyzed by Cdc42, is required for activation of PAK.

PAK3_HUMAN; Beta PAK; bPAK; CDKN1A; hPAK3; Mental retardation X linked 30; MRX30; MRX47; Oligophrenin 3; OPHN3; p21 activated kinase 3; p21 CDKN1A activated kinase 3; PAK-3; PAK3 p21 protein Cdc42/Rac-activated kinase 3; PAK3beta; Pak65alpha; Pak65beta; Serine threonine protein kinase PAK 3; Stk4.