Biosynthesis of triacsin featuring an N-hydroxytriazene pharmacophore.

Biosynthesis of triacsin featuring an N-hydroxytriazene pharmacophore.
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DOI:
10.1038/s41589-021-00895-3
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发表时间:
2021-12
影响因子:
14.8
通讯作者:
Zhang W
Zhang W
中科院分区:
生物学1区
文献类型:
--
作者:
Del Rio Flores A;Twigg FF;Du Y;Cai W;Aguirre DQ;Sato M;Dror MJ;Narayanamoorthy M;Geng J;Zill NA;Zhai R;Zhang W

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Triacsins是一类具有保守的N-羟基三氮烯结构的特殊代谢产物,在其他已知的天然产物中没有发现。Triacsins作为脂质代谢中的有效酰基辅酶A合成酶抑制剂是值得注意的,但它们的生物合成仍然难以捉摸。通过广泛的诱变和生物化学研究,我们在这里报告所有的酶需要构建和安装的N-羟基三氮烯药效团的triacsins。两种不同的ATP依赖性酶被发现催化两个连续的N-N键形成反应,包括甘氨酸利用肼形成酶,Tri 28,和亚硝酸盐利用N-亚硝基化酶,Tri 17。这项研究为未来N-N键形成酶的机械探究和生物催化应用铺平了道路。
Triacsins are an intriguing class of specialized metabolites possessing a conserved N-hydroxytriazene moiety not found in any other known natural products. Triacsins are notable as potent acyl-CoA synthetase inhibitors in lipid metabolism, yet their biosynthesis has remained elusive. Through extensive mutagenesis and biochemical studies, we here report all enzymes required to construct and install the N-hydroxytriazene pharmacophore of triacsins. Two distinct ATP-dependent enzymes were revealed to catalyze the two consecutive N-N bond formation reactions, including a glycine-utilizing hydrazine-forming enzyme, Tri28, and a nitrite-utilizing N-nitrosating enzyme, Tri17. This study paves the way for future mechanistic interrogation and biocatalytic application of enzymes for N-N bond formation.
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