由二核酸偏差和上下文依赖的密码子偏差驱动的Oropouche病毒的演化范式的映射
Xuanye Yang1,2, Zeyu Liu1, Xiaoting Ren1
1Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Northwest Minzu University, Lanzhou, China.
Virulence
|December 4, 2025
概括
耳鼻病毒 (OROV) 进化显示了蛋白质特异的核酸组成模式,而不是基因型特异的. 在奥罗沃夫,奥罗沃夫.
科学领域:
- 病毒学 病毒学
- 进化生物学 进化生物学
- 基因组学就是基因组学.
背景情况:
- 像Oropouche病毒 (OROV) 这样的关节动物传播的病毒 (arboviruses) 构成了严重的公共卫生问题.
- 了解树冠病毒进化对于开发诊断和疫苗至关重要.
- OROV在其核酸组成中显示出独特的进化动态.
研究的目的:
- 研究影响OROV核蛋白,糖蛋白和依赖RNA的RNA聚合酶 (RdRp) 演变的选择性压力.
- 阐明不同基因型和蛋白质OROV核酸组成的遗传特征.
主要方法:
- 在各种基因型中分析了45种OROV菌株.
- 利用了信息,二核酸概率比率,相对同义使用 (rSCU) 和上下文依赖的偏差 (CDCB).
- 评估了核酸使用偏差,二核酸偏差和同义码子使用偏差模式.
主要成果:
- 核酸偏差模式是蛋白质功能依赖的,而不是基因型特定的.
- 丁核酸CpG,密码子使用和CDCB受到宿主和病毒选择性压力的强烈影响.
- OROV核蛋白显示出比糖蛋白和RdRp更强的选择性压力;人类宿主转换显示出低于最佳的效率.
结论:
- OROV的进化是由蛋白质特异性核酸组成偏差的特征.
- 自然选择和宿主病毒相互作用显著塑造了OROV的遗传构成.
- 人类宿主中的有限的编码子使用适应表明OROV的潜在翻译挑战.
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