Predicted to enable C-4 methylsterol oxidase activity. Predicted to be involved in sterol biosynthetic process. Predicted to act upstream of or within cholesterol biosynthetic process. Predicted to be located in endoplasmic reticulum. Predicted to be integral component of membrane. Predicted to be active in endoplasmic reticulum membrane. Is expressed in several structures, including alimentary system; central nervous system; genitourinary system; integumental system; and sensory organ. Orthologous to human MSMO1 (methylsterol monooxygenase 1). [provided by Alliance of Genome Resources, Apr 2022]