ArticleAngewandte Chemie (International ed. in English)2025
Studies of α',β'-Epoxyketone Synthesis by Small-Molecule Flavins and Flavoenzymes.
Article in Angewandte Chemie (International ed. in English), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Flavin Catalysts in Organic Synthesis.Angewandte Chemie (International ed. in English) · 2026Review
- Generation of the Camptothecin Scaffold by a Flavin-Catalyzed Photooxidative Skeletal Reorganization.Angewandte Chemie (International ed. in English) · 2026Article
- Studies of α',β'-Epoxyketone Synthesis by Small-Molecule Flavins and Flavoenzymes.Angewandte Chemie (International ed. in English) · 2025Article
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Authors and funding
6 authors.
Funding
Abstract
Epoxomicin is a highly potent natural proteasome inhibitor and the structural scaffold for the anticancer drug carfilzomib. The biosynthesis of its α',β'-epoxyketone warhead involves the flavoenzyme EpxF, but a molecular understanding of the key catalytic reaction cascade remained elusive. Here, we disclose detailed mechanistic insights by characterizing all intermediates in the sequential steps of decarboxylation, desaturation, and epoxidation with synthetic flavins and the flavin-dependent oxidoreductase EpxF. A high-resolution crystal structure of EpxF revealed the architecture of the active site and enabled the identification of key catalytic residues. Exploratory docking based on this structure served as a qualitative tool to guide mutagenesis and rationalize substrate recognition. NMR studies with a
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