Functional Characterization and Cyclization Mechanism of a Diterpene Synthase Catalyzing the Skeleton Formation of Cephalotane‐Type Diterpenoids
作者:Changkang Li、Shuai Wang、Xinxin Yin、Aobo Guo、Kebo Xie、Dawei Chen、Songyang Sui、Yaotian Han、Jimei Liu、Ridao Chen、Jungui Dai
DOI:10.1002/anie.202306020
日期:2023.8.14
Cephalotene synthase (CsCTS), a new diterpene synthase from Cephalotaxus sinensis responsible for forming the core skeleton of cephalotane-type diterpenoids, was functionally identified. The cyclization cascade was studied in depth through isotopic labeling experiments and DFT calculations. Site-directed mutagenesis guided by molecular docking revealed the critical amino acid residues for the unique
三尖杉烯合酶(CsCTS)是一种来自三尖杉的新二萜合酶,负责形成三尖杉烷型二萜类化合物的核心骨架,并得到了功能鉴定。通过同位素标记实验和DFT计算对环化级联进行了深入研究。由分子对接引导的定点诱变揭示了独特的碳正离子驱动级联环化机制的关键氨基酸残基。