ID 4.2.3.34 DE stemod-13(17)-ene synthase. AN stemodene synthase. CA 9alpha-copalyl diphosphate = diphosphate + stemod-13(17)-ene. CC -!- Catalyzes the committed step in the biosynthesis of the stemodane CC family of diterpenoid secondary metabolites, some of which possess CC mild antiviral activity. CC -!- Also produces stemod-12-ene and stemar-13-ene as minor products. DR Q1AHB2, KSL11_ORYSI; //