4.2.3.44 (+)-copalyl diphosphate - Picea abies isopimara-7,15-diene + diphosphate - ? 444053 4.2.3.44 (+)-copalyl diphosphate - Isodon rubescens isopimara-7,15-diene + diphosphate - ? 444053 4.2.3.44 copalyl diphosphate proposed reaction scheme Picea abies isopimara-7,15-diene + diphosphate - ? 400696 4.2.3.44 additional information GC-MS analysis of compounds Isodon rubescens ? - ? 89 4.2.3.44 additional information the bifunctional diterpene synthase isopimara-7,15-diene synthase (diTPS-ISO) catalyzes the cyclization of geranylgeranyl diphosphate to (+)-copalyl diphosphate (cf. EC 5.5.1.12) and the formation of isopimara-7,15-diene from (+)-copalyl diphosphate. Compound identification and quantification by GC-MS analysis Picea abies ? - ? 89