Functional divergence between closely related Baeyer-Villiger monooxygenases from Aspergillus flavus
作者:F.M. Ferroni、M.S. Smit、D.J. Opperman
DOI:10.1016/j.molcatb.2014.05.015
日期:2014.9
well-characterized BVMOs including cyclohexanone, phenylacetone and 4-hydroxyacetophenone monooxygenase. Building on the Grogan classification/clustering of BVMOs, we have designated this new group of BVMOs, Group VI. Group VI BVMOs show an early divergence from the cyclopentanone monooxygenase (CPMO) type BVMOs (Group I). Substrate profiling using cyclic, bicyclic, aliphatic and aryl ketones show a clear divergence
An Enzymatic Toolbox for Cascade Reactions: A Showcase for an In Vivo Redox Sequence in Asymmetric Synthesis
作者:Nikolin Oberleitner、Christin Peters、Jan Muschiol、Maria Kadow、Stefan Saß、Thomas Bayer、Patricia Schaaf、Naseem Iqbal、Florian Rudroff、Marko D. Mihovilovic、Uwe T. Bornscheuer
DOI:10.1002/cctc.201300604
日期:2013.12
Baeyer–Villiger monooxygenase are combined in a cascade reaction by coexpression in E. coli to have a recombinant whole‐cell biocatalyst. Such an artificial metabolic “mini”‐pathway provides access to functionalized chiral compounds in high yields and optical purities as exemplified for kinetic resolutions, desymmetrizations, and regiodivergent biotransformations.
Genome mining reveals new bacterial type I Baeyer-Villiger monooxygenases with (bio)synthetic potential
作者:Romina D. Ceccoli、Dario A. Bianchi、María Ayelén Carabajal、Daniela V. Rial
DOI:10.1016/j.mcat.2020.110875
日期:2020.5
monooxygenases (BVMOs) are oxidorreductases that catalyze the oxidation of ketones in a very selective manner. By genomemining we detected seven putative type I BVMOs in Bradyrhizobium diazoefficiens USDA 110. As we established the phylogenetic relationships among them and with other type I BVMOs, we found out that they belong to different clades of the phylogenetic tree. Thus, we decided to clone and
摘要 Baeyer-Villiger 单加氧酶 (BVMOs) 是一种氧化还原酶,以非常选择性的方式催化酮的氧化。通过基因组挖掘,我们在重氮慢生根瘤菌 USDA 110 中检测到了七个推定的 I 型 BVMO。当我们建立它们之间以及与其他 I 型 BVMO 的系统发育关系时,我们发现它们属于系统发育树的不同进化枝。因此,我们决定克隆并异源表达其中的五个。其中三个,每个来自不同的系统发育组,作为可溶性蛋白质获得,使我们能够继续进行它们的生物催化评估和酶学表征。至于底物范围和选择性,我们观察到三种 BVMO 之间的互补行为。
Catalytic Asymmetric Baeyer-Villiger Oxidation in Water by Using Pt<sup>II</sup>Catalysts and Hydrogen Peroxide: Supramolecular Control of Enantioselectivity
chiral cyclobutanones 7 and 10: with 7 the best catalyst was 1 g, whereas with the larger substrate, 10, complexes 1 a–b performed better in terms of enantioselectivity. Each combination of substrate, catalyst and surfactant is a new system and supramolecular reciprocal interactions together with the hydrophobic character of the counterparts play crucial roles. The asymmetricBaeyer–Villiger oxidation
Manipulating the stereoselectivity of the thermostable Baeyer–Villiger monooxygenase TmCHMO by directed evolution
作者:Guangyue Li、Maximilian J. L. J. Fürst、Hamid Reza Mansouri、Anna K. Ressmann、Adriana Ilie、Florian Rudroff、Marko D. Mihovilovic、Marco W. Fraaije、Manfred T. Reetz
DOI:10.1039/c7ob02692g
日期:——
oxidation of a variety of structurally different ketones with notable activity and enantioselectivity, including the desymmetrization of 4-methylcyclohexanone (99% ee, S). In order to induce the reversal of enantioselectivity of this reaction as well as the transformations of other substrates, directedevolution based on iterative saturationmutagenesis (ISM) was applied, leading to (R)-selectivity (94%