Stereoselective Desymmetrizations by Recombinant Whole Cells Expressing the Baeyer–Villiger Monooxygenase fromXanthobacter sp. ZL5: A New Biocatalyst Accepting Structurally Demanding Substrates
作者:Daniela V. Rial、Dario A. Bianchi、Petra Kapitanova、Alenka Lengar、Jan B. van Beilen、Marko D. Mihovilovic
DOI:10.1002/ejoc.200700872
日期:2008.3
Baeyer–Villiger monooxygenase from Xanthobacter sp. ZL5 with respect to biotransformations of prochiral substrates is characterized. This enzyme catalyzes the desymmetrization of cyclic ketones bearing different chemical features with stereoselectivity similar to that obtained with a related protein fromAcinetobacter as a prototype representative of the cyclohexanone monooxygenase enzyme cluster. Moreover
在这项工作中,过表达来自黄杆菌属的 Baeyer-Villiger 单加氧酶的工程全细胞的底物谱和立体选择性。ZL5 关于前手性底物的生物转化的特征。该酶催化具有不同化学特征的环酮的去对称化,立体选择性类似于用来自不动杆菌的相关蛋白质作为环己酮单加氧酶酶簇的原型代表获得的。此外,这种生物催化剂能够以优异的对映选择性转化以前没有被其他酶转化的空间要求高的底物。这些结果扩展了全细胞生物转化过程可获得的光学纯内酯的所有成分,它们是合成天然和生物活性产品的有用中间体。此外,我们观察到由该单加氧酶催化的非活化 C=C 键发生显着的环氧化反应。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)