AbstractHeterocycles with nitrogen‐nitrogen (N−N) bonds are privileged building blocks of synthetic drugs. They are also found in natural products, although the biosynthetic logic behind them is poorly understood. Actinopyridazinones produced by Streptomyces sp. MSD090630SC‐05 possess unique dihydropyridazinone rings that have been studied as core nuclei in several approved synthetic therapeutics. Herein, we performed gene knockouts and in vitro biochemical experiments to elucidate the major steps in actinopyridazinone biosynthesis, including the unprecedented carrier protein mediated machinery for dihydropyridazinone formation.
摘要 具有氮-氮(N-N)键的杂环是合成药物的重要组成部分。它们也存在于
天然产物中,尽管人们对其背后的
生物合成逻辑知之甚少。由 Streptomyces sp. M
SD090630SC-05 产生的放线
哒嗪酮具有独特的二氢
哒嗪酮环,已作为几种获批合成疗法的核心核进行了研究。在此,我们进行了
基因敲除和体外生化实验,以阐明放线菌
哒嗪酮生物合成的主要步骤,包括前所未有的载体蛋白介导的二氢
哒嗪酮形成机制。