Predicted to enable phospholipid binding activity and protein serine/threonine kinase activity. Acts upstream of with a negative effect on apical protein localization. Acts upstream of or within several processes, including digestive tract development; morphogenesis of an epithelium; and nervous system development. Located in plasma membrane and zonula adherens. Is expressed in several structures, including blastoderm; common cardinal vein; epidermal cell; eye; and posterior lateral line primordium. Orthologous to human PRKCI (protein kinase C iota).