这个词是什么意思？
An enzyme of the transferase class that catalyzes the reaction RNA(n+1) and orthophosphate to yield RNA(n) and a nucleoside diphosphate, or the reverse reaction. ADP, IDP, GDP, UDP, and CDP can act as donors in the latter case. (From Dorland, 27th ed) EC 2.7.7.8.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D011117 · MeSH 2026。
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