Biosynthesis of violacein: a genuine intermediate, protoviolaceinic acid, produced by VioABDE, and insight into VioC function
作者:Kouhei Shinoda、Takuji Hasegawa、Hiroaki Sato、Masaaki Shinozaki、Hirotomo Kuramoto、Yosuke Takamiya、Tsutomu Sato、Naoki Nikaidou、Takeshi Watanabe、Tsutomu Hoshino
DOI:10.1039/b705358d
日期:——
A biosynthetic intermediate of violacein produced by the mixed enzymes of VioABDE was elucidated to be 5-(5-hydroxy-1H-indol-3-yl)-3-(1H-indol-3-yl)-1H-pyrrole-2-carboxylic acid, named protoviolaceinic acid, indicating that VioC, responsible for the final biosynthetic step, works to oxygenate at the 2-position of the right side indole ring, and that the oxygenation reaction to form the central pyrrolidone core proceeds in a non-enzymatic fashion.
由 VioABDE 混合酶产生的一种紫草素生物合成中间体被阐明为 5-(5-羟基-1H-吲哚-3-基)-3-(1H-吲哚-3-基)-1H-吡咯-2-羧酸,命名为原紫草素酸,表明负责最后生物合成步骤的 VioC、负责最后的生物合成步骤,在右侧吲哚环的 2 位进行氧合,氧合反应以非酶方式形成中央吡咯烷酮核心。