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使用序列和基于结构的相似性,对一个不同的基因组进行功能性注释
Dennis Svedberg1,2, Rahel R Winiger1, Alexandra Berg1,2
1Department of Molecular Biology, The Laboratory for Molecular Infection Medicine Sweden (MIMS), Science for Life Laboratory, Umeå Centre for Microbial Research (UCMR), Umeå University, Umeå, 90187, Sweden.
BMC genomics
|January 3, 2024
概括
我们开发了ANNOTEX,这是一款结合序列和结构数据的新型工具,用于准确的基因功能注释. 这种方法增强了对这些具有挑战性的细胞内病原体及其基因组的理解.
科学领域:
- 基因组学就是基因组学.
- 结构生物学 结构生物学
- 生物信息学是一种生物信息学.
背景情况:
- 微粒体拥有高度精简的基因组,由于高序列分歧,对传统的基因注释构成挑战.
- 许多微粒体基因仍然在功能上没有表征,阻碍了生物学理解.
- 蛋白质结构预测和数据库的进步为功能基因注释提供了新的途径.
研究的目的:
- 开发和验证一种新的工作流程,用于微粒体基因组中的功能基因注释.
- 提高对不同生物体的基因组注释的准确性和全面性.
- 为了描述微型虫Vairimorpha necatrix的基因组.
主要方法:
- 通过使用ANNOTEX (ChimeraX的注释扩展) 插件建立了一个结合序列和基于结构的注释的工作流.
- 使用ColabFold生成蛋白质结构预测,并使用Foldseek.seek对PDB和AlphaFold数据库进行搜索.
- 手动策划整合了序列和基于结构的证据,以提高注释质量.
主要成果:
- 该工作流应用于Vairimorpha necatrix基因组,注释了3080个蛋白质编码序列,具有高RNA测序确认.
- 与传统方法相比,功能注释的准确性和质量得到了显著改善.
- 这项研究为V. necatrix提供了全面的基因组描述,并确定了Encephalitozoon cuniculi. previously未被描述的基因的功能.
结论:
- 一个新的功能性注释工具,ANNOTEX,是为微型虫等不同的生物开发的.
- 基于结构的注释方法为研究其他不同的物种提供了有价值的模板.
- 这项工作增强了对V. necatrix的理解,V. necatrix是一种未表征的细胞内病原体.
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