新生RNA的快速折叠调节了真核RNA生物发生的过程
bioRxiv : the preprint server for biology
|December 9, 2024
概括
这项研究揭示了新生RNA分子如何在 CoSTseq.使用的转录过程中形成结构. 早期的RNA折叠会影响基因表达和细胞功能.
科学领域:
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
- 生物化学 生物化学
背景情况:
- RNA结构对其功能至关重要,影响催化,调节和编码潜力.
- 在转录 (共转录折叠) 期间的基配对决定了RNA处理和最终的构造.
- 了解这些早期RNA结构状态是必不可少的,但仍然具有挑战性.
研究的目的:
- 开发和应用一种新的方法,CoSTseq,用于检测新生的RNA基配对.
- 研究活酵母细胞中全转录组共转录RNA的结构动态.
- 描述转录期间RNA基配对的时间和模式.
主要方法:
- CoSTseq (协同转录结构测序) 开发用于检测新生的RNA中的基配对.
- 该方法监测RNA聚合酶 (Pols) 内部和退出的核酸基配对活动.
- 在活的酵母细胞中进行了全转录组的分析.
主要成果:
- 在转录过程中确定了不同类型的RNA基配对行为.
- 对于核糖体RNA (rRNA),快速和延迟的结发生在与RNA聚合酶I (Pol I) 非常接近的地方.
- 新生的信使RNAs (mRNAs前) 与成熟的mRNAs形成类似的结构,这表明RNA聚合酶II (Pol II) 背后有效的共同转录折叠.
结论:
- CoSTseq为共同转录RNA折叠动态提供了前所未有的洞察力.
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- 新生的mRNA折叠在很大程度上重复成熟的mRNA结构,表明有效的共同转录过程.
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