(-)-Alpha-cedrene synthase
Definition:
EC Tree > 4 Lyases > 4.2 Carbon-oxygen lyases > 4.2.3 Acting on phosphates > 4.2.3.227 (-)-alpha-cedrene synthase
(-)-Alpha-cedrene synthase occurs in plants; the initial cyclization product is a (7R)-beta-bisabolyl cation. (-)-Alpha-Cedrene is one of the major products; other products are (+)-2-epi-prezizaene (cf. EC 4.2.3.226), small amounts of (+)-beta-curcumene and other sesquiterpenes (<10%). The Nicotiana tabacum (tobacco) enzyme also catalyzes the EC 4.2.3.61 reaction. It cyclizes (2Z,6E)-farnesyl diphosphate into (-)-alpha-cedrene and diphosphate. Structurally it is a sesquiterpene cyclase.
(-)-Alpha-cedrene synthase occurs in plants; the initial cyclization product is a (7R)-beta-bisabolyl cation. (-)-Alpha-Cedrene is one of the major products; other products are (+)-2-epi-prezizaene (cf. EC 4.2.3.226), small amounts of (+)-beta-curcumene and other sesquiterpenes (<10%). The Nicotiana tabacum (tobacco) enzyme also catalyzes the EC 4.2.3.61 reaction. It cyclizes (2Z,6E)-farnesyl diphosphate into (-)-alpha-cedrene and diphosphate. Structurally it is a sesquiterpene cyclase.
References:
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