使用AlphaFold 3控制贝塔和马疹病毒晚期转录的复合体的结构预测
1Department of Biochemistry and Molecular Biology, University of Iowa, Iowa City, IA 52240, USA.
Viruses
|June 27, 2025
概括
这项研究使用AlphaFold3来预测疹病毒中晚期转录因子复合物的结构. 预测的结构揭示了保存的特征,并提供了对病毒转录调节的见解.
科学领域:
- 病毒学 病毒学
- 结构生物学 结构生物学
- 分子生物学分子生物学
背景情况:
- 贝塔和玛疹病毒使用六种病毒蛋白质形成一个复合体来调节生命周期晚期的转录.
- 这种复合物在晚期转录开始部位上游结合富含TA的序列,招募RNA聚合酶II (Pol II).
- 这些晚期转录因子 (LTF) 和它们的复合体的先前结构数据是有限的.
研究的目的:
- 用AlphaFold3.3预测和分析各种β和玛疹病毒中LTF复合物的结构.
- 调查LTF综合体的结构保护和功能影响.
主要方法:
- 利用AlphaFold3对人类细胞巨型病毒 (HCMV),小鼠细胞巨型病毒 (MCMV),人类疹病毒6 (HHV6),人类疹病毒7 (HHV7),爱斯坦-巴尔病毒 (EBV) 和卡波西肉瘤相关疹病毒 (KSHV) 的LTF复合物的结构预测.
- 分析了可信度水平的预测结构,病毒家族之间的相似性,以及关键功能部位的保护.
主要成果:
- 对于LTF复合体,AlphaFold3产生了高可信度的结构预测,尽管LTF之间的序列保存率低,但显示出了显著的相似性.
- 预测的结构与LTF相互和DNA相互作用的现有知识保持一致.
- 在一个关键的结点确定了一个保存的三氨酸酸化位,并预测了复合体内的多个金属离子结合位.
结论:
- 跨多种疹病毒的LTF复合体保留的结构特征表明了调节病毒转录的保留机制.
- 预测的结构为LTF功能,子单元相互作用以及与宿主通用转录因子 (GTF) 的潜在相互作用提供了新的见解.
- 在阐明病毒蛋白复合体的结构和功能方面,AlphaFold3被证明是有价值的.
关键词:
阿尔法 折叠3 3这是EBV的EBV.这就是HCMV.这就是HHV6的原因.这就是HHV7的原因.在 KSHVV 找 KSHV一个复杂的LTF复杂.一个MCMV的MCMV是什么?疹病毒病毒的病毒.晚期转录因素是什么更多相关视频
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