与ProQ相关的小RNAs控制了Vibrio cholerae中的运动性
Rabea Ghandour1, Daniel Devlitsarov1, Phillip Popp2
1Friedrich Schiller University, Institute of Microbiology, 07743 Jena, Germany.
Nucleic acids research
|December 27, 2024
概括
霍乱病毒中的ProQ蛋白质结合了数百个RNA转录. FlaX小RNA (sRNA) 使用ProQ阻止鞭毛蛋白mRNA转化,影响细菌的运动性.
科学领域:
- 微生物学 微生物学
- 分子生物学分子生物学
- 细菌病原体的产生
背景情况:
- 转录后基因调节对于细菌的生存和毒性至关重要.
- ProQ 蛋白质充当RNA 伴侣,影响RNA 稳定性和双重组的形成.
- 在人类病原体Vibrio cholerae中ProQ的作用仍然未被描述.
研究的目的:
- 调查ProQ在Vibrio cholerae中的功能.
- 在全球范围内分析ProQ-依赖的RNA-RNA相互作用.
- 为了阐明FlaX小RNA在V.cholerae基因调节中的作用.
主要方法:
- 通过结合和测序 (RIL-Seq) 的RNA相互作用被用于全球RNA双重分析.
- 在V. cholerae转录组中确定了ProQ-RNA相互作用.
- 对缺乏flaX基因的V. cholerae菌株进行了表型分析.
主要成果:
- 发现ProQ与数百种V. cholerae转录物相互作用,包括FlaX的sRNA.
- RIL-Seq揭示了一个广泛的ProQ辅助RNA相互作用网络.
- FlaX被证明与flaB mRNA进行基配对,抑制翻译启动并影响运动性.
结论:
- 在V. cholerae的转录后基因调节中,ProQ起着重要作用.
- 由ProQ促进的FlaXsRNA是鞭毛蛋白mRNA的关键调节者.
- 破坏ProQ-FlaX相互作用会损害V. cholerae的运动性和鞭毛基因表达.
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