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转录重新塑造了所有原子分子动力学模拟所揭示的RNA毛折叠路径
Peng Tao1,2, Yunda Si1, Jie Xia3,4
1Key Laboratory of Systems Health Science of Zhejiang Province, School of Life Science, Hangzhou Institute for Advanced Study, Hangzhou; University of Chinese Academy of Sciences, Beijing, China.
PLoS computational biology
|September 8, 2025
概括
RNA折叠途径在共转录折叠 (CTF) 和自由折叠 (FF) 之间有所不同,影响RNA功能. 我们的研究揭示了CTF导致更紧的构造,影响原子规模的RNA折叠动态.
科学领域:
- 分子生物学分子生物学
- 生物物理学的生物物理.
- 计算化学计算化学
背景情况:
- RNA折叠通路对于RNA动态功能调节至关重要.
- 同转录折叠 (CTF) 和自由折叠 (FF) 之间的差异在原子层面上尚未完全理解.
研究的目的:
- 在CTF和FF条件下,系统地比较RNA针头的折叠动力学.
- 阐明受转录影响的RNA折叠路径中的原子尺度差异.
主要方法:
- 开发一个简化的全原子分子动力学框架.
- 分析了超过800微秒的模拟轨迹数据.
- 在不同的转录速率下,折叠路径和形状空间的比较.
主要成果:
- 在CTF和FF模拟中观察到相同的原生RNA构造.
- 在CTF和FF路径之间发现了对基对形成顺序的明显偏好.
- 与FF相比,CTF模拟导致了更紧的RNA构造.
结论:
- 转录和折叠的时间空间合使RNA折叠动态多样化.
- 通过促进更紧的结构,CTF影响RNA折叠路径.
- 提供了对RNA折叠机制的原子级洞察力.
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