在腺病毒感染的早期阶段,对蛋白VII的翻译后修改很重要
Edward A Arnold1, Julian R Smith2, Katie Leung1
1Department of Microbiology, University of Washington School of Medicine, Seattle, Washington, USA.
Journal of virology
|January 2, 2025
概括
病毒蛋白VII的翻译后修饰 (PTMs) 对腺病毒感染至关重要. 在K2/K3的乙化会损害早期感染,而替代性乙化会在以后补偿,从而影响病毒DNA和基因表达.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 病毒,包括腺病毒,利用宿主细胞的转化后修饰 (PTMs) 进行其生命周期.
- 腺病毒蛋白VII对于病毒基因组包装和宿主染色体破坏至关重要.
- 蛋白VII上的PTMs调节其亚核定位,并在感染期间发挥作用.
研究的目的:
- 调查PTMs在感染期间对腺病毒蛋白VII的功能影响.
- 阐明特定的PTM如何影响蛋白VII在病毒转录,局部化和蛋白质相互作用中的作用.
- 了解蛋白VII PTMs与腺病毒病原发生之间的相互作用.
主要方法:
- 在蛋白VII上利用了突变腺病毒与废除或模仿的PTM.
- 评估了PTM突变对蛋白VII和病毒DNA核进口的影响.
- 分析了早期基因表达和蛋白VII与病毒蛋白E1A的相互作用.
主要成果:
- 蛋白VII在氨酸残留物2或3 (K2/K3) 的乙化对早期腺病毒感染有害.
- 阻止K2/K3乙化的突变增加了蛋白VII和病毒DNA核进口,并增强了早期基因表达.
- 蛋白VII在感染后期经历替代性乙化,可能会补偿突变的部位.
- 蛋白VII通过染色质介导机制与腺病毒早期蛋白E1A相互作用.
结论:
- 腺病毒蛋白VII上的PTM是病毒感染动态的关键调节者.
- 蛋白VII上的特定乙化模式对腺病毒感染的早期和晚期有不同的影响.
- 蛋白VII和E1A之间的相互作用受到染色素和PTM的影响,突出显示了复杂的病毒与宿主相互作用.
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