The genetically modified Mycobacterium sp. BCS 396 strain has been used to transform sterols with stigmastane side chain in order to obtain 26-oxidized metabolites. beta-Sitosterol (I) was transformed to 4-stigmasten-3-one (II), 26-hydroxy-4-stigmasten-3-one (III), and 3-oxo-4-stigmasten-26-oic acid (IV), while stigmasterol (V) was converted to 4,22-stigmastadien-3-one (VI), 6 beta-hydroxy-4,22-stigmastadien-3-one
转
基因的分枝杆菌。BCS 396菌株已用于转化具有柱头甾烷侧链的
固醇,以获得26个氧化的代谢产物。将
β-谷固醇(I)转化为4-stigmasten-3-one(II),26-hydroxy-4-stigmasten-3-one(III)和3-oxo-4-stigmasten-26-oic acid(IV ),而
豆甾醇(V)转化为4,22-stigmastadien-3-one(VI),6个β-羟基-4,22-stigmastadien-3-one(VII),26-羟基-4,22-stigmastadien -3-one(VIII),3-oxo-4,22-stigmastadien-26-oic acid甲酯(IX)和3-oxo-1,4,22-stigmastatrien-26-oic acid甲酯(X)那个应变。在
β-谷固醇和
豆甾醇中,26-氧化作用都会在C-25上产生R-构型。