V2EX ubiquitylation

Ubiquitylation

定义 Definition

ubiquitylation(也常写作 ubiquitination)指泛素化:一种细胞内的蛋白质翻译后修饰过程,把小蛋白 ubiquitin(泛素)连接到底物蛋白上,从而影响该蛋白的降解(常见于蛋白酶体途径)、定位、活性或相互作用等。

发音 Pronunciation (IPA)

/jubkwtlen/

例句 Examples

Ubiquitylation can mark a protein for destruction.
泛素化可以给蛋白质“打标签”,使其被降解。

Defects in ubiquitylation pathways are linked to cancer and neurodegenerative diseases because they disrupt protein quality control.
泛素化通路的缺陷与癌症和神经退行性疾病有关,因为它会破坏蛋白质质量控制系统。

词源 Etymology

ubiquitylation 来自 ubiquity(“无处不在;普遍存在”,源于拉丁语 ubique “到处”)+ -lation(表示“使……发生/形成……的过程”)。该词之所以与“无处不在”相关,是因为 ubiquitin(泛素)在真核细胞中非常普遍;“ubiquitylation/ubiquitination”字面上可理解为“加上泛素的过程”。

相关词 Related Words

文学/著名作品中的使用 Notable Works

  • Molecular Biology of the Cell(《细胞的分子生物学》)在蛋白质周转、蛋白酶体途径与泛素系统章节中讨论泛素化/泛素连接。
  • Lehninger Principles of Biochemistry(《雷宁格生物化学原理》)在蛋白质降解与细胞调控相关内容中提到泛素化机制。
  • 期刊综述与研究论文(如 Nature, Science, Cell)“ubiquitylation/ubiquitination”常用于描述蛋白质被泛素修饰及其在细胞信号与疾病中的作用。
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