Predicted to enable transferase activity, transferring alkyl or aryl (other than methyl) groups. Predicted to contribute to dehydrodolichyl diphosphate synthase activity. Predicted to be involved in dolichol biosynthetic process and protein glycosylation. Predicted to be located in endoplasmic reticulum membrane. Predicted to be part of dehydrodolichyl diphosphate synthase complex. Human ortholog(s) of this gene implicated in autosomal dominant intellectual developmental disorder 55 and congenital disorder of glycosylation Iaa. Is an ortholog of human NUS1 (NUS1 dehydrodolichyl diphosphate synthase subunit).