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
复制标题

DOI:
10.1021/acs.biochem.1c00181
复制
发表时间:
2021-05-17
期刊:
影响因子:
2.9
通讯作者:
Begley, Tadhg P.
Begley, Tadhg P.
中科院分区:
生物学3区
文献类型:
--
作者:
Joshi, Sumedh;Fedoseyenko, Dmytro;Begley, Tadhg P.

文献摘要

被引文献

相似文献

氨富塔洛辛合成酶(MqnE)是一种自由基SAM酶,在富塔洛辛依赖的甲基萘醌生物合成过程中催化3-((1-羧基乙烯基)氧苯甲酸转化为氨富塔洛辛。在这篇通讯中,我们报道了使用二亚硫酸钠、分子氧或5,5-二甲基-1-吡咯啉- n -氧化物在mqne催化反应中捕获自由基中间体。这些自由基捕获策略在其他自由基SAM酶的研究中具有潜在的普遍效用。
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.