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RadH: A Versatile Halogenase for Integration into Synthetic Pathways
Author(s) -
Me Binuraj R. K.,
Brandenburger Eileen,
Sharif Humera H.,
Klemstein Ulrike,
Shepherd Sarah A.,
Greaney Michael F.,
Micklefield Jason
Publication year - 2017
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201706342
Subject(s) - chemistry , natural product , mutagenesis , combinatorial chemistry , flavin group , derivatization , mutant , biochemistry , enzyme , biosynthesis , gene , organic chemistry , high performance liquid chromatography
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.