Predicted to enable C-5 sterol desaturase activity. Predicted to be involved in cholesterol biosynthetic process via lathosterol. Predicted to act upstream of or within steroid biosynthetic process. Predicted to be located in intracellular membrane-bounded organelle. Predicted to be active in endoplasmic reticulum membrane. Is expressed in central nervous system; ganglia; gut; and liver lobe. Orthologous to human SC5D (sterol-C5-desaturase). [provided by Alliance of Genome Resources, Apr 2022]