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Biochem/physiol Actions

p21-activated kinases (PAKs) are serine/threonine kinases that are activated by and are effectors of small GTPases, cell division control protein 42 (CDC42) and Ras-related C3 botulinum toxin substrate (RAC). PAK1 is a key regulator of the actin cytoskeleton, adhesion and cell motility. Inactive dimeric PAK1 is mainly cytosolic and interaction with the activators Cdc42-GTP and Rac1-GTP stimulates the kinase at the sites of cellular protrusions forming adhesions to the extracellular matrix. The protein has a role in numerous cellular processes and has been shown to be expressed in squamous non-small cell lung carcinomas.

General description

p21 (RAC1) activated kinase 1 (PAK1) is a member of the p21-activated kinases (PAKs) which have been implicated in the regulation of cell morphology, motility and transformation. PAK1 belongs to the Group I PAKs which also includes PAK2 and PAK3. The gene encoding this protein is localized on human chromosome 11q13.

Legal Information

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Physical form

Supplied in 50mM Tris-HCl, pH 7.5, 150mM NaCl, 10mM glutathione, 0.1mM EDTA, 0.25mM DTT, 0.1mM PMSF, 25% glycerol.

Preparation Note

after opening, aliquot into smaller quantities and store at -70 °C. Avoid repeating handling and multiple freeze/thaw cycles