 PaFS has two domains, a C-terminal prenyltransferase domain which converts isoprene units into geranylgeranyl diphosphate (GGDP) and an N-terminal terpene cyclase domain where GGDP gets cyclized and turns into fusicocca-2,10(14)-diene.It is also reported in this study that a 2-oxoglutarate-dependent dioxygenase-like gene, a cytochrome P450 monooxygenase-like gene, a short-chain dehydrogenase/reductase-like gene, and an α-mannosidase-like gene at the 3’ location downstream of PaFS which are responsible for converting fusicocca-2,10(14)-diene into fusicoccin.Two enzymes, one dioxygenase and PAPT, are in charge of catalyzing a hydroxylation at the 3-position of fusicocca-2,10(14)-diene-8β,16-diol and prenylation of the hydroxyl group of glucose in fusicoccin P, respectively.