V2EX ubiquitination

Ubiquitination

释义 Definition

泛素化:一种重要的蛋白质翻译后修饰过程,把小蛋白泛素(ubiquitin)共价连接到目标蛋白上,从而影响其降解、定位、活性或相互作用。最常见的作用之一是标记蛋白进入蛋白酶体(proteasome)进行降解。(也常写作 ubiquitinylation

发音 Pronunciation (IPA)

/jubkwtnen/

例句 Examples

Cells use ubiquitination to remove damaged proteins.
细胞通过泛素化来清除受损蛋白质。

Aberrant ubiquitination can disrupt cell-cycle control and contribute to cancer development.
异常的泛素化会破坏细胞周期调控,并可能促成癌症发生。

词源 Etymology

Ubiquitination 来自 ubiquitin(泛素)+ -ation(名词后缀,表示“……的过程/作用”)。Ubiquitin 一词与拉丁语 ubique(“无处不在”)相关,强调这种小蛋白在真核细胞中广泛存在、参与多种调控过程;因此 ubiquitination 字面含义可理解为“加上泛素的过程”。

相关词 Related Words

文献与作品 Literary/Notable Works

  • 《Molecular Biology of the Cell》(Alberts 等):在蛋白质周转与蛋白酶体途径章节中系统讨论 ubiquitination。
  • 《Lehninger Principles of Biochemistry》:讲解泛素-蛋白酶体系统与蛋白质降解调控时多次出现该术语。
  • 《The Cell: A Molecular Approach》(Cooper & Hausman):在细胞调控与蛋白质命运(protein fate)相关章节使用 ubiquitination。
  • Nobel Prize Lectures(Hershko、Ciechanover、Rose,2004):围绕泛素介导的蛋白质降解机制,频繁使用 ubiquitination 及相关术语。
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