V2EX cofactor

Cofactor

定义 Definition

n. 在生物化学中,指酶发挥催化作用时所需的非蛋白质辅助成分。它可以是金属离子,也可以是有机分子;有些与酶结合较松,有些则紧密结合。典型语境包括酶学、代谢途径和生物化学教材中对酶活性的说明。

发音 Pronunciation

/kofktr/;/kfkt/

例句 Examples

Some enzymes need a cofactor to work properly.
有些酶需要辅因子才能正常工作。

In many biochemical reactions, a cofactor helps the enzyme bind the substrate or transfer electrons.
在许多生化反应中,辅因子帮助酶结合底物或转移电子。

词源 Etymology

由 **co-**(共同、一起)和 factor(因素、作用者)构成,字面意思是“共同起作用的因素”。在科学用法中,它逐渐用于表示与酶一起完成催化功能的辅助成分。

相关词 Related Words

科学文献用例 Scientific Usage

  • 生物化学教材常用该词解释酶活性、辅酶、金属离子与酶催化之间的关系。
  • 酶学论文和实验报告中常见表达包括 enzyme cofactor、required cofactor、metal cofactor。
  • 代谢研究和分子生物学文献中,该词常用于描述某种反应是否依赖特定的辅助分子或离子。
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