pertmuational isomer

例句：

1. 1. The structure of the protein is a pertmuational isomer.
   蛋白质的结构是一个变构异构体。
2. 2.The study of pertmuational isomers has led to significant advancements in drug discovery.
   对变构异构体的研究已经导致了药物发现的重大进步。
3. 3.The chemical properties of pertmuational isomers are quite different from those of their non-isomer counterparts.
   变构异构体的化学性质与非异构体的性质截然不同。