ID 4.2.3.115 DE Alpha-terpinene synthase. CA Geranyl diphosphate = alpha-terpinene + diphosphate. CC -!- The enzyme has been characterized from Dysphania ambrosioides CC (American wormseed). CC -!- The enzyme will also use (3R)-linalyl diphosphate. CC -!- The reaction involves a 1,2-hydride shift. CC -!- The 1-pro-S hydrogen of geranyl diphosphate is lost. DR A0A0M3Q1Q3, GTPS1_THYVU; E2E2P0, GTPS_ORIVU ; W6HUT3, TPS7_HEDCO ; //