zymogen

酶原,即酶的前体,需经生化变化(如水解)才能成为活性酶。

A proenzyme, or enzyme precursor, which requires a biochemical change (i.e. hydrolysis) to become an active form of the enzyme.

一组酶的非活性前体化合物,需要某种变化(如水解掩盖活性酶的片段)才能变为活性

any of a group of compounds that are inactive precursors of enzymes and require some change (such as the hydrolysis of a fragment that masks an active enzyme) to become active