Description_x000D_ Biochem/physiol Actions_x000D_ PAK7 is a PAK family kinase that contains a CDC42/Rac1 interactive binding (CRIB) motif at the N-terminus and a Ste20-like kinase domain at the C-terminus. PAK7 has been implicated in the regulation of cell morphology, motility and transformation. PAK7 is moderately expressed in adult and fetal whole brain and in all specific adult brain regions tested._x000D_ Unit Definition_x000D_ One unit will incorporate one nanomole of phosphate into the peptide substrate CKRPRAASFAE per minute at 30 °C and pH 7.2 using a final concentration of 50 μM [32P] ATP._x000D_ Physical form_x000D_ Solution in 50 mM Tris-HCl, pH 7.5, 150 mM NaCl, 0.25 mM DTT, 0.1 mM EGTA, and 30% glycerol.