Enables Hsp70 protein binding activity; chromatin binding activity; and cyclin-dependent protein serine/threonine kinase activity. Acts upstream of or within several processes, including mitotic G2 DNA damage checkpoint signaling; mitotic cell cycle phase transition; and protein phosphorylation. Colocalizes with mitochondrial matrix. Is expressed in several structures, including alimentary system; central nervous system; genitourinary system; respiratory system; and sensory organ. Human ortholog(s) of this gene implicated in breast cancer; cervical cancer; and urinary bladder cancer. Orthologous to human CDK1 (cyclin dependent kinase 1). [provided by Alliance of Genome Resources, Apr 2022]