Required for proper ring canal development. Also required for the development of male genitalia and for adult survival. ATP + L-tyrosyl-[protein] = ADP + H(+) + O-phospho-L-tyrosyl-[protein] Binds 1 zinc ion per subunit. Ring canals. Ring canals in the egg chambers and imaginal disks of third-instar larvae. Expressed both maternally and zygotically. Predominantly in early to middle embryogenesis, in larvae and adult females. Flies exhibit shortened copulatory duration (due to incomplete fusion of the left and right halves of the apodeme that holds the penis during copulation) and reduced adult-stage life span. Belongs to the protein kinase superfamily. Tyr protein kinase family. TEC subfamily.