Predicted to enable choline-phosphate cytidylyltransferase activity; identical protein binding activity; and phosphatidylcholine binding activity. Involved in response to vasopressin. Predicted to be located in endoplasmic reticulum. Orthologous to human PCYT1B (phosphate cytidylyltransferase 1B, choline). [provided by Alliance of Genome Resources, Apr 2022]