Predicted to enable ceramide cholinephosphotransferase activity; ceramide phosphoethanolamine synthase activity; and sphingomyelin synthase activity. Involved in several processes, including cellular response to lipopolysaccharide; cellular response to tumor necrosis factor; and inflammatory response. Predicted to be located in Golgi trans cisterna. Predicted to be integral component of Golgi membrane; integral component of endoplasmic reticulum membrane; and integral component of plasma membrane. Used to study pulmonary edema. Biomarker of pulmonary edema. Orthologous to human SGMS1 (sphingomyelin synthase 1). [provided by Alliance of Genome Resources, Apr 2022]