Pak1 (yN-19) Antibody: sc-31683

Pak1 Background Information
Pak1 belongs to the Ser/Thr protein kinase family and may function by modifying and partially stabilizing thermolabile DNA polymerases, perhaps during DNA repair. Expression of PAK1 increases specific activity of p53 in DNA-binding assays accompanied by a corresponding increase in transactivation. In vitro protein kinase assays show that GST-Pak1 can autophosphorylate, and can phosphorylate casein as an exogenous substrate. The Pak1 protein autophosphorylates on serine residues and preferentially binds to activated Cdc42p both in vitro and in vivo. This binding is mediated through the p21 binding domain on Pak1p and the effector domain on Cdc42p. Pak1 catalytic domain binds to the same highly conserved region on the regulatory domain that binds Cdc42, a GTPase protein capable of activating Pak1.