α-Humulene synthase (EC 4.2.3.104,ZSS1) is an enzyme with a systematic name (2E,6E)-farnesyl-diphosphate diphosphate-lyase (α-humulene-forming). This enzyme catalyses the following chemical reaction:
(2E,6E)-farnesyl diphosphate α-humulene + diphosphate
The enzyme from Zingiber zerumbet, can be used to make shampoo ginger. It also gives traces of β-caryophyllene.
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