究其原因1）C-13侧链合成不足，2）紫杉醇核心部分与侧链结合处酶—苯丙基转移酶（BAPT）表达量低。
The reason for that were 1) the scarcity of C-13 side chain synthesis, 2) the low expression level of the phenylpropanoyltransferase (BAPT) transfering the side chain directly to baccatinlll.
究其原因1）C-13侧链合成不足，2）紫杉醇核心部分与侧链结合处酶—苯丙基转移酶（BAPT）表达量低。
The reason for that were 1) the scarcity of C-13 side chain synthesis, 2) the low expression level of the phenylpropanoyltransferase (BAPT) transfering the side chain directly to baccatinlll.
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