Stereospecific Biosynthesis of β-Methyltryptophan from<scp>L</scp>-Tryptophan Features a Stereochemical Switch
作者:Yi Zou、Qi Fang、Haixing Yin、Zutao Liang、Dekun Kong、Linquan Bai、Zixin Deng、Shuangjun Lin
DOI:10.1002/anie.201306255
日期:2013.12.2
Make the switch: The three‐enzyme cassette MarG/H/I is responsible for stereospecific biosynthesis of β‐methyltryptophan from L‐tryptophan (1). MarG/I convert 1 into (2S,3R)‐β‐methyltryptophan, while MarG/I combined with MarH convert 1 into (2S,3S)‐β‐methyltryptophan. MarH serves as a stereochemical switch by catalyzing the stereoinversion of the β‐stereocenter.
进行切换:三酶盒MarG / H / I负责L色氨酸的立体定向生物合成β-甲基色氨酸(1)。MarG / I将1转换为(2S,3R)-β-甲基色氨酸,而MarG / I与MarH结合将1转换为(2S,3S)-β-甲基色氨酸。MarH通过催化β-立体中心的立体反转而充当立体化学开关。