V2EX mrna stability

mRNA Stability

定义 Definition

mRNA stability 指“信使RNA(mRNA)的稳定性”,也就是一条 mRNA 分子在细胞内能存活多久、被降解得快不快。mRNA 越稳定,通常越能被反复翻译成蛋白质;mRNA 越不稳定,基因表达往往更短暂、更容易被迅速调控。(在不同生物、不同细胞状态下,mRNA 稳定性差异很大。)

例句 Examples

mRNA stability affects how much protein a cell can make.
mRNA 的稳定性会影响细胞能合成多少蛋白质。

During stress, cells often change mRNA stability by recruiting RNA-binding proteins and microRNAs to specific sequences in the 3′ UTR.
在压力条件下,细胞常通过让 RNA 结合蛋白和微小 RNA(microRNAs)作用于 3′ 非翻译区(3′ UTR)的特定序列来改变 mRNA 的稳定性。

发音 Pronunciation (IPA)

/m r n e stblti/

词源 Etymology

mRNAmessenger RNA(信使核糖核酸)的缩写,messenger 表示“传递信息的人/物”,在分子生物学中指把 DNA 的遗传信息“传递”到核糖体进行翻译的 RNA。stability 来自拉丁语根 stabilis(稳定的),英语里引申为“稳定性、保持不变或不易被破坏的性质”。合在一起,mRNA stability 就是“mRNA 的稳定程度/寿命”。

相关词 Related Words

文学/著作中的用例 Literary Works

  • Molecular Biology of the Cell(Alberts 等)在基因表达调控章节讨论 mRNA 的半衰期与稳定性机制。
  • Molecular Cell Biology(Lodish 等)讲解 mRNA 降解通路、3′ UTR 元件与稳定性调控。
  • Genes / Lewin’s GENES(Krebs、Goldstein、Kilpatrick;或 Lewin 系列教材)介绍真核转录后调控与 mRNA stability 的核心概念。
  • RNA Worlds(论文/文集)从 RNA 生物学角度涉及 RNA 稳定性与调控网络(含 mRNA 相关内容)。
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