V2EX posttranslational

Posttranslational

Definition / 释义

posttranslational(后翻译的;翻译后):指蛋白质在“翻译”(translation,指由mRNA合成蛋白质)完成之后发生的变化或过程,最常见的是翻译后修饰(如磷酸化、糖基化、泛素化等),用来调控蛋白质的活性、定位、稳定性与相互作用。(也常见于搭配:posttranslational modification

Pronunciation / 发音

/posttrnzlenl/

Examples / 例句

Posttranslational modifications can change how a protein works.
翻译后修饰会改变蛋白质的功能。

The receptor’s activity is controlled by posttranslational phosphorylation and subsequent degradation.
该受体的活性受到翻译后磷酸化以及随后降解过程的调控。

Etymology / 词源

由 **post-**(在……之后)+ translational(与“翻译”有关的)构成。这里的 translation 是分子生物学术语,指“遗传信息从mRNA翻译成蛋白质”的过程;因此 posttranslational 字面义为“翻译之后发生的”。

Related Words / 相关词

Literary Works / 文学作品

  • Lewin’s Genes XII(基因学教材中常以 posttranslational modification 讨论蛋白质调控)
  • Alberts et al., Molecular Biology of the Cell(《细胞的分子生物学》多处使用 posttranslational 讲解蛋白质命运与调控)
  • Berg, Tymoczko & Stryer, Biochemistry(《斯特赖尔生物化学》常见该词用于酶调控与蛋白质加工章节)
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