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Updated: Jul 4, 2025

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在RNase P和RNase MRP中RNA和蛋白质子单元的共同进化,这两种RNA处理酶是两个RNA处理酶

Bin Zhou¹, Futang Wan¹, Kevin X Lei²

¹Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Institute of Precision Medicine, Shanghai, China.

The Journal of biological chemistry

|February 9, 2024

概括

核糖核蛋白RNase P和RNase MRP是从一个共同的祖先进化而来的. 结构分析揭示了RNA和蛋白质共因子如何共同进化,为这些基本的分子机器形成了不同的功能.

科学领域:

分子生物学分子生物学
结构生物学结构生物学
进化生物学进化生物学

背景情况:

RNase P和RNase MRP是必不可少的核糖蛋白 (RNP),由催化RNA和蛋白质辅因子组成.
RNase P对于前体tRNA在所有生命领域的成熟至关重要.
在真核生物中发现的RNase MRP在rRNA生物发生过程中起着关键作用.

研究的目的:

概述RNase P和RNase MRP之间的结构和功能关系.
为了说明RNA和蛋白质共因子在塑造RNP多样性的共同进化.
了解从共同祖先到不同的RNP函数的进化轨迹.

主要方法:

对RNase P和RNase MRP进行比较结构分析.
检查RNA和蛋白质辅因子的组成和相互作用.
推断基于结构和功能相似性的进化关系.

主要成果:

无论是RNase P和RNase MRP都保留了一个共同的催化RNA核心.
细胞RNase P利用的蛋白质共因子比它的细菌对应物更多.
RNase MRP 已经进化出了不同的 RNA 元素和蛋白质辅因子,用于 ssRNA 处理.

结论:

保存的tRNA前体识别机制突出了进化的持久性.
RNA和蛋白质的共同进化推动了功能分歧和RNP复杂性.
结构洞察力为了解RNP世界的演变提供了一个框架.

关键词:

在RNase MRP中使用RNase.在RNase P中使用RNase P 共同进化的共同进化低温电磁波冷却器 (Cryo-EM) 是一个非常好的方法.核蛋白是一种核蛋白.

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