Hydroxylation of Dodecanoic Acid and (2R,4R,6R,8R)-Tetramethyldecanol on a Preparative Scale using an NADH- Dependent CYP102A1 Mutant
作者:Katja Kühnel、Steffen C. Maurer、Yana Galeyeva、Wolfgang Frey、Sabine Laschat、Vlada B. Urlacher
DOI:10.1002/adsc.200700054
日期:2007.6.4
system was optimised using an NADH-dependent CYP102A1 mutant, dodecanoic acid as a model substrate and takes advantage of randomly methylated beta-cyclodextrins for the solubilisation of hydrophobic substrates. In the reaction with 50 mM of dodecanoic acid a total turnover number of 66,700 and substrate conversion of 66.7 % could be reached. The total turnover number of a CYP102A1 mutant in the reaction
来自巨大芽孢杆菌的细胞色素P450 CYP102A1是一种脂肪酸羟化酶,可催化分支脂肪醇((2 R,4 R,6 R,8 R)-四甲基癸醇(4))的高度区域选择性羟化反应。该反应的产物(2 R,4 R,6 S,8 S)-四甲基癸烷-1,9-二醇(3)可用于合成大环内酯类抗生素。为了在制备规模上建立生物氧化过程,已经建立了单相含水反应体系。该系统使用NADH依赖性CYP102A1突变体,十二烷酸作为模型底物进行了优化,并利用随机甲基化的β-环糊精用于疏水底物的增溶。在与50 mM十二酸的反应中,总周转数为66,700,底物转化率为66.7%。在反应中CYP102A1突变体与23.4毫米(2的总转换数- [R,4 - [R,6 - [R,8 - [R)-tetramethyldecanol 4为17,290,且底物转化率达到74%。在制备规模该反应产生了420毫克(2 - [R,4 - [R,6