Targeting active site residues and structural anchoring positions in terpene synthases
作者:Anwei Hou、Jeroen S Dickschat
DOI:10.3762/bjoc.17.161
日期:——
The sesterterpene synthase SmTS1 from Streptomyces mobaraensis contains several unusual residues in positions that are otherwise highly conserved. Site-directed mutagenesis experiments for these residues are reported that showed different effects, resulting in some cases in an improved catalytic activity, but in other cases in a loss of enzyme function. For other enzyme variants a functional switch
来自Streptomyces mobaraensis的二萜合酶 SmTS1在高度保守的位置包含几个不寻常的残基。据报道,这些残基的定点诱变实验显示出不同的效果,导致在某些情况下催化活性提高,但在其他情况下酶功能丧失。对于其他酶变体,观察到功能转换,将 SmTS1 从二萜合成酶转变为二萜合酶。本文对这些发现给出了合理的解释,这些发现通常可能允许对其他萜烯合酶进行蛋白质工程,以提高其催化效率或改变其功能。