Menaquinone Biosynthesis: New Strategies to Trap Radical Intermediates in the MqnE-Catalyzed Reaction
Menaquinone Biosynthesis: New Strategies to Trap Radical Intermediates in the MqnE-Catalyzed Reaction
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DOI:
10.1021/acs.biochem.1c00181
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发表时间:
2021-05-17
期刊:
影响因子:
2.9
通讯作者:
Begley, Tadhg P.
中科院分区:
文献类型:
--
作者:
Joshi, Sumedh;Fedoseyenko, Dmytro;Begley, Tadhg P.
Aminofutalosine synthase (MqnE) is a radical SAM enzyme that catalyzes the conversion of 3-((1-carboxyvinyl)oxy)benzoic acid to aminofutalosine during the futalosine-dependent menaquinone biosynthesis. In this Communication, we report the trapping of a radical intermediate in the MqnE-catalyzed reaction using sodium dithionite, molecular oxygen, or 5,5-dimethyl-1-pyrroline-N-oxide. These radical trapping strategies are potentially of general utility in the study of other radical SAM enzymes.