Predicted to enable sphingolipid delta-4 desaturase activity. Predicted to be involved in ceramide biosynthetic process. Predicted to be located in endoplasmic reticulum membrane and mitochondrial membrane. Predicted to be integral component of membrane. Human ortholog(s) of this gene implicated in hypomyelinating leukodystrophy. Orthologous to human DEGS1 (delta 4-desaturase, sphingolipid 1). [provided by Alliance of Genome Resources, Apr 2022]