RadH: a versatile halogenase for integration into synthetic pathways

Binuraj R.K. Menon, Eileen Brandenburger, Humera H. Sharif, Ulrike Klemstein, Sarah A. Shepherd, Michael F. Greaney, Jason Micklefield*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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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.

Original languageEnglish
Pages (from-to)11841-11845
Number of pages5
JournalAngewandte Chemie - International Edition
Issue number39
Publication statusPublished - 18 Sept 2017


  • biocatalysis
  • directed evolution
  • enzyme mechanisms
  • halogenases
  • pathway engineering
  • UKRI
  • BB/K00199X/1


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