Reaction catalyzed by alpha-humulene synthase (4.2.3.104)
4
=
+
+
+
+
4
4 (2E,6E)-farnesyl diphosphate
=
guaia-1(10),11-diene
+
guaia-1(5),11-diene
+
alpha-humulene
+
beta-elemene
+
4 diphosphate
