MeSH note : catalyzes the conversion of geranylgeranyl pyrophosphate to copalyl pyrophosphate;
copalyl diphosphate synthase is a terpene cyclase which catalyzes the first specific
step of the gibberellin (GA) pathway as it branches off from the general isoprenoid
(biosynthetic) pathway at geranylgeranyl disphosphate (GGDP); GenBank U11034 (Arabidopsis);