PLK3Polo-like kinase 3 , also known as PLK3, is an enzyme which in humans is encoded by the PLK3 gene.FunctionCytokine-inducible kinase is a putative serine/threonine kinase. CNK contains both a catalytic domain and a putative regulatory domain. It may play a role in regulation of cell cycle progression and tumorigenesis.InteractionsPLK3 has been shown to interact with: CDC25C, CHEK2, and P53.