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Characterization and Crystal Structure of a Robust Cyclohexanone Monooxygenase.


ABSTRACT: Cyclohexanone monooxygenase (CHMO) is a promising biocatalyst for industrial reactions owing to its broad substrate spectrum and excellent regio-, chemo-, and enantioselectivity. However, the low stability of many Baeyer-Villiger monooxygenases is an obstacle for their exploitation in industry. Characterization and crystal structure determination of a robust CHMO from Thermocrispum municipale is reported. The enzyme efficiently converts a variety of aliphatic, aromatic, and cyclic ketones, as well as prochiral sulfides. A compact substrate-binding cavity explains its preference for small rather than bulky substrates. Small-scale conversions with either purified enzyme or whole cells demonstrated the remarkable properties of this newly discovered CHMO. The exceptional solvent tolerance and thermostability make the enzyme very attractive for biotechnology.

SUBMITTER: Romero E 

PROVIDER: S-EPMC5213842 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature

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Characterization and Crystal Structure of a Robust Cyclohexanone Monooxygenase.

Romero Elvira E   Castellanos J Rubén Gómez JR   Mattevi Andrea A   Fraaije Marco W MW  

Angewandte Chemie (International ed. in English) 20161122 51


Cyclohexanone monooxygenase (CHMO) is a promising biocatalyst for industrial reactions owing to its broad substrate spectrum and excellent regio-, chemo-, and enantioselectivity. However, the low stability of many Baeyer-Villiger monooxygenases is an obstacle for their exploitation in industry. Characterization and crystal structure determination of a robust CHMO from Thermocrispum municipale is reported. The enzyme efficiently converts a variety of aliphatic, aromatic, and cyclic ketones, as we  ...[more]

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