V2EX co-translational translocation

Co-translational Translocation

释义 Definition

共翻译转位 / 共翻译易位:指蛋白质在核糖体翻译进行的同时,一边合成一边被导入或插入到膜结构中(最常见的是进入内质网 ER的膜/分泌蛋白通路),通常由信号肽(signal peptide)引导,并通过如 Sec61 转位子(translocon)等通道完成。

发音 Pronunciation (IPA)

/ko trnslenl trnzlken/

例句 Examples

Proteins destined for secretion often enter the ER by co-translational translocation.
许多将要被分泌的蛋白质常通过共翻译转位进入内质网。

In eukaryotic cells, the signal recognition particle (SRP) binds the emerging signal peptide and targets the ribosome to the ER membrane, enabling co-translational translocation through the Sec61 channel.
在真核细胞中,信号识别颗粒(SRP)会结合新生肽链上的信号肽,并将核糖体引导到内质网膜上,使蛋白质能够通过 Sec61 通道实现共翻译转位。

h2>词源 Etymology

该术语由三部分构成:co-(“共同、同时”)+ translational(与“翻译/蛋白质合成”相关,源自 translation)+ translocation(“转位/移位”,来自拉丁语 trans- “穿过” + locare “放置”)。整体直译就是“与翻译同时发生的移位”,准确点明其机制特征:边翻译边转运/插膜

相关词 Related Words

文献与作品 Literary / Notable Works

  • Molecular Biology of the Cell(Alberts 等)在分泌途径与内质网蛋白转运章节中系统讨论该概念。
  • Molecular Cell Biology(Lodish 等)常用“co-translational translocation”描述 SRP 介导的 ER 靶向与转位。
  • Günter Blobel 相关诺贝尔演讲与经典综述(关于蛋白质信号假说与转运机制)频繁涉及共翻译转位这一核心过程。
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