The biosynthesis pathways of terpenoid include mevalonate pathway and 1-deoxy-D-xylulose 5-phosphate/2C-methyl-D-erythritol 4-phosphate pathway.

• 这两条途径中都存在一系列调控萜类化合物生成、结构和功能各异的酶,其中关键酶的作用决定了下游萜类化合物的产量。