COG数据库更新 2024 年 2024 年
Michael Y Galperin1, Roberto Vera Alvarez1, Svetlana Karamycheva1
1Computational Biology Branch, Division of Intramural Research, National Library of Medicine, National Institutes of Health, 8600 Rockville Pike, Bethesda, MD 20894, USA.
Nucleic acids research
|November 4, 2024
概括
更新后的Clusters of Orthologous Genes (COG) 数据库现在包括超过2,200个 prokaryotic 基因组,扩大了其覆盖范围并增强了功能注释. 这个版本改善了对细菌蛋白质分泌系统和其他关键蛋白质家族的研究.
科学领域:
- 基因组学就是基因组学.
- 生物信息学是一种生物信息学.
- 微生物学 微生物学
背景情况:
- 1997年建立的正统基因集群 (COG) 数据库是比较基因组学的重要资源.
- 持续更新是必要的,以纳入快速扩大的完全测序的 prokaryotic 基因组的数量.
研究的目的:
- 更新COG数据库以最新的完整的 prokaryotic 基因组.
- 扩大COG的功能类别,特别关注细菌蛋白质分泌系统.
- 改进各种蛋白质家族的注释,并促进对比基因组分析.
主要方法:
- 从NCBI数据库中包含2296个完整的原生物基因组 (2103个细菌,193个古生物) (2023年11月).
- 将COG蛋白家族从4877扩展到4981,专注于分泌系统.
- 改善了rRNA/tRNA修饰蛋白,信号转导蛋白和未表征家族的功能注释.
主要成果:
- 现在COG数据库涵盖了2296种 prokaryotic 物种,代表具有完整基因组的所有属.
- 新的COG结合了细菌分泌系统 (II-X型,Flp/Tad型,IV型 pili),使得谱系特定的分析成为可能.
- 增强的注释可以更好地了解 prokaryotic 的功能多样性和进化.
结论:
- 更新后的COG数据库为 prokaryotic 基因组学研究提供了更全面的资源.
- 扩展的功能类别,特别是分泌系统,促进了详细的比较研究.
- 本资源有助于理解基本的 prokaryotic 系统的分布和演变.
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