Predicted to enable 3-dehydrosphinganine reductase activity. Predicted to be involved in 3-keto-sphinganine metabolic process and sphingolipid biosynthetic process. Predicted to act upstream of or within sphingolipid metabolic process. Predicted to be located in endoplasmic reticulum. Predicted to be active in endoplasmic reticulum membrane. Human ortholog(s) of this gene implicated in erythrokeratodermia variabilis et progressiva 4 and follicular lymphoma. Orthologous to human KDSR (3-ketodihydrosphingosine reductase).