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RadH: A Versatile Halogenase for Integration into Synthetic Pathways.

ABSTRACT: Flavin-dependent halogenases are useful enzymes for providing halogenated molecules with improved biological activity, or intermediates for synthetic derivatization. We demonstrate how the fungal halogenase RadH can be used to regioselectively halogenate a range of bioactive aromatic scaffolds. Site-directed mutagenesis of RadH was used to identify catalytic residues and provide insight into the mechanism of fungal halogenases. A high-throughput fluorescence screen was also developed, which enabled a RadH mutant to be evolved with improved properties. Finally we demonstrate how biosynthetic genes from fungi, bacteria, and plants can be combined to encode a new pathway to generate a novel chlorinated coumarin "non-natural" product in E. coli.

SUBMITTER: Menon BRK

PROVIDER: S-EPMC5637929 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature

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RadH: A Versatile Halogenase for Integration into Synthetic Pathways.

Menon Binuraj R K BRK Brandenburger Eileen E Sharif Humera H HH Klemstein Ulrike U Shepherd Sarah A SA Greaney Michael F MF Micklefield Jason J

Angewandte Chemie (International ed. in English) 20170818 39

Flavin-dependent halogenases are useful enzymes for providing halogenated molecules with improved biological activity, or intermediates for synthetic derivatization. We demonstrate how the fungal halogenase RadH can be used to regioselectively halogenate a range of bioactive aromatic scaffolds. Site-directed mutagenesis of RadH was used to identify catalytic residues and provide insight into the mechanism of fungal halogenases. A high-throughput fluorescence screen was also developed, which enab ...[more]

PMID: 28722773

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