细菌中的液体液相分离和保护性蛋白质聚合物
Dorota Kuczyńska-Wiśnik1, Karolina Stojowska-Swędrzyńska1, Ewa Laskowska1
1Department of General and Medical Biochemistry, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland.
Molecules (Basel, Switzerland)
|September 28, 2023
概括
液-液相分离 (LLPS) 驱动细菌中的蛋白质聚合,增强它们在干燥应激期间的生存能力. 这种涉及无膜有机体 (MLO) 的机制对于细菌健康至关重要,可能有助于抗生素的生存.
科学领域:
- 细胞生物学 细胞生物学
- 微生物学 微生物学
- 生物化学 生物化学
背景情况:
- 液-液相分离 (LLPS) 和无膜有机体 (MLOs) 是真核生物细胞组织的关键.
- 新出现的证据表明,LLPS也发生在 prokaryotes,特别是在压力.
- 在蛋白质毒性压力下形成的蛋白质聚合物可以作为MLOs,改善细菌的健康状况.
研究的目的:
- 审查在大肠杆菌中干燥-再水合应激过程中形成的蛋白质聚合物的作用.
- 探索包括LLPS在内的机制,在细菌中形成聚合物的基础.
- 突出LLPS和内在无序蛋白质对细菌干燥耐受性的贡献.
主要方法:
- 在蛋白质聚合机制的分析.
- 对LLPS,MLOs和细菌应激反应的现有文献的审查.
- 专注于大肠杆菌干燥-再水应激模型.
主要成果:
- LLPS,无序序列和容易聚合的区域都与细菌聚合物的形成有关.
- 蛋白质聚合物可以隔离和保护蛋白质,激活质量控制,并诱导休眠状态.
- 由LLPS驱动的聚合有助于细菌的干燥耐受性.
结论:
- 内在无序的蛋白质和LLPS对于细菌的干燥耐受性至关重要,类似于真核生物.
- 由LLPS驱动的聚合可能是细菌 (包括病原体) 对抗抗生素和干燥应激的生存策略.
- 对细菌LLPS的进一步研究可以为应对抗生素耐药性和环境压力的策略提供信息.
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