main products are 25.3% delta-selinene, 17.4% (E,E)-germacrene B, 9.7% guaia-6,9-diene, plus 31 further products. Most of the germacrenes produced bear a trans-C2,C3-double bond, revealing the transoid nature of the nerolidyl diphosphate intermediate
truncation at residue R11 results in main products 8.7% delta-selinene, 17.7% germacrene A, 21.8% germacrene C, 32.4% germacrene B. Truncation at residue H16 results in main products 1.8% delta-selinene, 17.0% germacrene A, 27.6% germacrene C, 19.7% germacrene B, 18.0% gamma-humulene. Truncation at residue W21 results in main products 23.4% beta-bisabolene, 24.4% germacrene A, 15.2% germacrene C, 4.7% germacrene B, 26.4% gamma-humulene
Steele, C.L.; Crock, J.; Bohlmann, J.; Croteau, R.
Sesquiterpene synthases from grand fir (Abies grandis). Comparison of constitutive and wound-induced activities, and cDNA isolation, characterization, and bacterial expression of delta-selinene synthase and gamma-humulene synthase