探索 prokaryotes,菌体和移动遗传元素中反防御系统的多样性
Florian Tesson1, Erin Huiting2, Linlin Wei3
1Institut Pasteur, CNRS UMR3525, Molecular Diversity of Microbes Lab, 25-28 rue du Docteur Roux, 75015, Paris, France.
Nucleic acids research
|December 10, 2024
概括
研究人员开发了AntiDefenseFinder,这是一种用于检测 prokaryotes 和菌体中的反防御系统的工具. 该工具识别了超过47,000个系统,揭示了细菌和病毒共同进化和防御机制的洞察力.
科学领域:
- 微生物学 微生物学
- 基因组学就是基因组学.
- 生物信息学是一种生物信息学.
背景情况:
- Prokaryotes,菌体和移动遗传元素 (MGE) 参与共同进化,推动防御和反防御机制的发展.
- 反防御蛋白质是多样化的,小的,并且难以跨基因组识别,阻碍了全面的分析.
- 现有的工具缺乏在基因组序列内完全注释抗防御蛋白的能力.
研究的目的:
- 开发一个全面的工具来检测和注释基因组序列中的反防御系统.
- 识别和编目跨 prokaryotic 和菌体基因组的反防御系统.
- 研究基因组定位和抗防御系统的进化起源.
主要方法:
- 开发"AntiDefenseFinder",一个免费的开源工具和网络服务.
- 使用AntiDefenseFinder在基因组序列中检测156个已知的反防御系统.
- 对已识别的反防御系统的分布,同定位和进化模式的分析.
主要成果:
- 在 prokaryotes 和它们的病毒中识别了 47,981 个反防御系统.
- 发现89%的抗防御系统位于MGEs中,而一些,如抗Pycsar蛋白1 (Apyc1),主要存在于细菌基因组中.
- 证据表明Apyc1起源于用于循环核酸信号调节的细菌,后来被菌体采用.
结论:
- AntiDefenseFinder促进了对抗防御系统的全面识别,有助于研究宿主-病原体相互作用.
- 这些发现强调了MGE在传播反防御机制方面的重要作用.
- 了解像Apyc1这样的蛋白质的进化轨迹,加深了我们对细菌和病毒之间的军备竞赛的了解.
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