A gene for cytochrome P450 (moxA) from Nonomuraea recticatena, coexpressed with camAB for pseudomonad redox partners in Escherichia coli, hydroxylated oleanolic acid to produce queretaroic acid. When we used the P450-induced whole-cell as a catalyst, only a small amount of queretaroic acid was produced, probably due to poor permeability of oleanolic acid into the E. coli cell. In an alternative approach with the cell-free reaction system, the conversion ratio increased up to 17%.
来自 Nonomuraea recticatena 的细胞色素 P450 (moxA)
基因,与大肠杆菌中假单胞菌氧化还原伙伴的 camAB 共表达,羟基化
齐墩果酸产生
槲皮酸。当我们使用P450诱导的全细胞作为催化剂时,仅产生少量的克雷塔酸,这可能是由于
齐墩果酸进入大肠杆菌细胞的渗透性差。在使用无细胞反应系统的替代方法中,转化率提高了 17%。