Copper‐Mediated Selenazolidine Deprotection Enables One‐Pot Chemical Synthesis of Challenging Proteins
作者:Zhenguang Zhao、Norman Metanis
DOI:10.1002/anie.201909484
日期:2019.10.7
While chemical protein synthesis has granted access to challenging proteins, the synthesis of longer proteins is often limited by low abundance or non-strategic placement of cysteine residues, which are essential for native chemical ligations, as well as multiple purification and isolation steps. We describe the one-pot total synthesis of human thiosulfate:glutathione sulfurtransferase (TSTD1). WT-TSTD1
尽管化学蛋白质合成已允许使用具有挑战性的蛋白质,但较长蛋白质的合成通常受到半胱氨酸残基的低丰度或非战略性放置的限制,这对于天然化学连接以及多重纯化和分离步骤至关重要。我们描述了人硫代硫酸盐:谷胱甘肽硫转移酶(TSTD1)一锅全合成。WT-TSTD1以C-to-N合成方法合成,涉及多个NCL反应,CuII介导的硒代硒唑烷(Sez)脱保护和化学选择性脱硒。硒类似物Se-TSTD1,其中活性位点Cys被硒代半胱氨酸替代,也通过动力学控制的连接和N-to-C合成方法合成。