Enables phosphotransferase activity, for other substituted phosphate groups. Acts upstream of or within phosphatidylcholine biosynthetic process. Located in endoplasmic reticulum membrane. Is expressed in alimentary system; cranium; nervous system; nose; and urinary system. Orthologous to human CEPT1 (choline/ethanolamine phosphotransferase 1). [provided by Alliance of Genome Resources, Apr 2022]