Enables protein serine/threonine kinase activity. Involved in generation of neurons and mitotic cell cycle. Acts upstream of or within several processes, including generation of neurons; metaphase/anaphase transition of mitotic cell cycle; and mitotic sister chromatid segregation. Located in actin cytoskeleton; ruffle; and vacuole. Is expressed in several structures, including central nervous system; hemolymphoid system gland; respiratory system; sensory organ; and skeleton. Human ortholog(s) of this gene implicated in primary autosomal recessive microcephaly 17. Orthologous to human CIT (citron rho-interacting serine/threonine kinase). [provided by Alliance of Genome Resources, Apr 2022]