Predicted to enable dimethylallyltranstransferase activity and geranyltranstransferase activity. Predicted to be involved in farnesyl diphosphate biosynthetic process. Predicted to act upstream of or within isoprenoid biosynthetic process. Predicted to be active in cytoplasm. Is expressed in liver and yolk syncytial layer. Human ortholog(s) of this gene implicated in porokeratosis. Orthologous to human FDPS (farnesyl diphosphate synthase).