Predicted to enable prenyltransferase activity. Predicted to be involved in isoprenoid biosynthetic process and ubiquinone biosynthetic process. Predicted to be part of polyprenyl diphosphate synthase complex. Predicted to be active in mitochondrion. Is expressed in several structures, including alar plate midbrain region; lens placode; musculature system; optic vesicle; and segmental plate. Human ortholog(s) of this gene implicated in primary coenzyme Q10 deficiency 2. Orthologous to human PDSS1 (decaprenyl diphosphate synthase subunit 1).