海洋微藻病毒泛基组的功能分析和进化分析
Briallen Lobb1, Anson Shapter1, Andrew C Doxey1
1Department of Biology, University of Waterloo, 200 University Ave. West., Waterloo, ON N2L 3G1, Canada.
Viruses
|May 27, 2023
概括
菲科德纳病毒群的病毒,特别是科利病毒,具有30%共享基因的核心大基因组. 这些巨型病毒的功能分析揭示了它们在复制和宿主相互作用中的关键作用,AlphaFold结构预测有助于此.
科学领域:
- 病毒学 病毒学
- 基因组学就是基因组学.
- 结构生物学 结构生物学
背景情况:
- 菲科德纳维里亚是大型DNA病毒,对藻类繁殖动态和宿主病毒相互作用至关重要.
- 基因组解释受到许多具有未知功能的假设基因的阻碍.
- 在Phycodnaviridae中理解基因共享是有限的.
研究的目的:
- 分析Coccolithovirus泛基因组,识别核心和辅助基因.
- 使用计算工具和结构建模,对假设蛋白质进行功能性注释.
- 为未来对菌病毒和其他巨型病毒的研究提供框架.
主要方法:
- 在14种Coccolithovirus菌株的泛基因组分析.
- 多种功能注释工具的应用.
- 阿尔法结构建模和文献分析.
- 对可可利索病毒 EhV-201 感染的转录组分析.
主要成果:
- 确定了一个核心泛基因组,包括所有菌株共享的30%的基因.
- 发现34%的基因存在于三种或更少的菌株中 (附属).
- 核心基因在早期表达,宿主蛋白相似性和基本功能 (复制,重组,修复) 中得到丰富.
- 创建了142个假设/假设膜蛋白的新注释,并使用AlphaFold高精度预测了204个蛋白质结构.
结论:
- 科科利索病毒核心基因组具有功能意义,涉及至关重要的病毒过程.
- 功能和结构的洞察力推动了对巨型病毒及其演变的研究.
- 这项研究为详细表征Coccolithovirus基因和蛋白质提供了基础.
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