这个词是什么意思？
A class of enzymes that catalyze geometric or structural changes within a molecule to form a single product. The reactions do not involve a net change in the concentrations of compounds other than the substrate and the product.(from Dorland, 28th ed) EC 5.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D007535 · MeSH 2026。
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