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Levopimaradiene synthase (GbLPS) of Ginkgo biloba catalyzes the first committed step in ginkgolide biosynthesis by converting geranylgeranyl diphosphate into levopimaradiene, which subsequently undergoes complex oxidation step and rearrangement of carbon skeleton, leading to formation of
Ginkgo biloba contains terpene triclactones of high pharmaceutical value such as ginkgolides. 1-hydroxy-2-methyl-2-(E)-butenyl-4-diphosphate (HMBPP) reductase (HDR) is proved to be the terminal-acting enzyme in the plastid MEP pathway which provides isoprenoid precursors for the biosynthesis of
2-C-methyl-D-erythritol 4-phosphate cytidyltransferase (MECT), the third enzyme of the 2-C-methyl-D-erythritol 4-phosphate (MEP) pathway, catalyzes formation of 4-(cytidine 5'-diphospho)-2-C-methyl-D-erythritol from MEP. GbMECT, presumably involved in ginkgolide biosynthesis, was cloned and
Ginkgo biloba contains secondary metabolites with interesting pharmacological properties, including highly modified diterpenoid ginkgolide, potent and selective antagonist of platelet-activating factor. 2-C-Methyl-D: -erythritol 2,4-cyclodiphosphate synthase gene (GbMECS) involved in ginkgolide