申请人:Global Bioenergies
公开号:US11124806B2
公开(公告)日:2021-09-21
Described are methods for the production of isobutene comprising the enzymatic conversion of 3-methylcrotonic acid into isobutene wherein said 3-methylcrotonic acid is obtained by the enzymatic conversion of 3-methylcrotonyl-CoA into 3-methylcrotonic acid or wherein said 3-methylcrotonic acid is obtained by the enzymatic conversion of 3-hydroxyisovalerate (HIV) into 3-methylcrotonic acid. It is described that the enzymatic conversion of 3-methylcrotonic acid into isobutene can, e.g., be achieved by making use of a 3-methylcrotonic acid decarboxylase, preferably an FMN-dependent decarboxylase associated with an FMN prenyl transferase, an aconitate decarboxylase (EC 4.1.1.6), a methylcrotonyl-CoA carboxylase (EC 6.4.1.4), or a geranoyl-CoA carboxylase (EC 6.4.1.5).
所述
异丁烯的生产方法包括酶法将 3-甲基
巴豆酸转化为
异丁烯,其中所述 3-甲基
巴豆酸是通过酶法将 3-甲基
巴豆酰-CoA 转化为 3-甲基
巴豆酸得到的,或者所述 3-甲基
巴豆酸是通过酶法将 3-羟基
异戊酸(HIV)转化为 3-甲基
巴豆酸得到的。据介绍,将 3-甲基
巴豆酸酶法转化为
异丁烯的过程可通过以下方式实现,例如3-甲基
巴豆酸脱羧酶,最好是与
FMN 前酰基转移酶相关的
FMN 依赖性脱羧酶、
丙酮酸脱羧酶(
EC 4.1.1.6)、甲基
巴豆酰-CoA 羧化酶(
EC 6.4.1.4)或香叶酰-CoA 羧化酶(
EC 6.4.1.5)。