Zhenshan Chen, He Duan, Mengqi Zhao, Fei Xiao and Wenli Li*,
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Discovery and Characterization of a Single-Component Halogenase for Phenazine Halogenation
Halogenated phenazines hold promise as antimicrobial and antibiofilm agents, yet are mainly accessed via chemical synthesis. Herein, we report PezW, a novel single-component flavin-dependent halogenase (FDH) that halogenates phenazine scaffolds, notably enabling enzymatic synthesis of bioactive 2-bromo-1-hydroxyphenazine (2d) and 2,4-bromo-1-hydroxyphenazine (2f). Structural modeling and mutagenesis revealed key residues critical for substrate binding and catalysis. These findings highlight PezW’s potential as a biocatalyst for the synthesis of halogenated phenazines with pharmaceutical relevance.
期刊介绍:
Organic Letters invites original reports of fundamental research in all branches of the theory and practice of organic, physical organic, organometallic,medicinal, and bioorganic chemistry. Organic Letters provides rapid disclosure of the key elements of significant studies that are of interest to a large portion of the organic community. In selecting manuscripts for publication, the Editors place emphasis on the originality, quality and wide interest of the work. Authors should provide enough background information to place the new disclosure in context and to justify the rapid publication format. Back-to-back Letters will be considered. Full details should be reserved for an Article, which should appear in due course.