Levopimaradiene synthase
Definition:
EC Tree > 4 Lyases > 4.2 Carbon-oxygen lyases > 4.2.3 Acting on phosphates > 4.2.3.32 levopimaradiene synthase
Levopimaradiene synthase is a diterpene cyclase. In ginkgo it catalyzes the initial cyclization step in ginkgolide biosynthesis, a structurally unique family of diterpenoids that are highly specific platelet-activating-factor receptor antagonists. Levopimaradiene is widespread in higher plants; in some species the enzyme also forms abietadiene, palustradiene and neoabietadiene. It cyclizes (+)-copalyl diphosphate into abieta-8(14),12-diene (levopimaradiene) and diphosphate. It appears in viruses and cellular organisms. Structurally it is a bifunctional diterpene cyclase.
Levopimaradiene synthase is a diterpene cyclase. In ginkgo it catalyzes the initial cyclization step in ginkgolide biosynthesis, a structurally unique family of diterpenoids that are highly specific platelet-activating-factor receptor antagonists. Levopimaradiene is widespread in higher plants; in some species the enzyme also forms abietadiene, palustradiene and neoabietadiene. It cyclizes (+)-copalyl diphosphate into abieta-8(14),12-diene (levopimaradiene) and diphosphate. It appears in viruses and cellular organisms. Structurally it is a bifunctional diterpene cyclase.
References:
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