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识别非lytic dsRNA 菌体 phiNYNY 的受体结合蛋白和宿主受体
Guoqing Ding1,2, Hongmei Liu1,2, Jing Lan1
1School of Public Health, the key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China.
Microbiology spectrum
|October 22, 2024
概括
双链RNA (dsRNA) 菌体phiNY使用其orf11蛋白作为受体结合蛋白 (RBP) 附着在Microvirgula aerodenitrificans上的脂多糖体 (LPS) 上. 这澄清了非lytic dsRNA 菌体的菌体-宿主相互作用.
科学领域:
- 微生物学 微生物学
- 病毒学 病毒学
- 分子生物学分子生物学
背景情况:
- 有限的宿主范围是双链RNA (dsRNA) 菌体的特征,其中大多数是感染Pseudomonas.
- 从Microvirgula aerodenitrificans中分离出来的dsRNA菌体phiNY具有非性生命周期,其宿主相互作用仍然不太清楚.
- 了解菌体与宿主相互作用对于理解dsrna菌体生物学和探索非菌体的应用至关重要.
研究的目的:
- 为了识别dSRNA菌体的受体结合蛋白 (RBP),phiNY.
- 为了确定phiNY用于吸附的特定宿主受体.
- 为了阐明一个非lytic dsRNA 菌体中宿主-菌体相互作用的分子基础.
主要方法:
- 同源性对齐,氨基酸相似性分析和家族遗传树结构以确定假定的RBP.
- 全细胞ELISA,西部涂抹和间接免疫光测定以确认RBP功能.
- 亲和色谱,ELISA和动态光散射来识别宿主受体和原子力显微镜来可视化RBP受体结合.
主要成果:
- 位于phiNY的M段的Orf11被确定为假定的受体结合蛋白 (RBP).
- 实验分析证实了orf11作为负责菌体吸附的RBP的作用.
- 在M. aerodenitrificans LH9菌株表面的脂聚糖 (LPS) 被确定为phiNY.的特定宿主受体.
结论:
- dsRNA菌体phiNY使用orf11蛋白作为其RBP,它可以识别M. aerodenitrificans上的脂多糖体 (LPS).
- 这一发现表明phiNY利用RBP-LPS相互作用,类似于液性dsRNA菌体,用于宿主细胞吸附.
- 阐明这些相互作用为phiNY的非性生命周期及其感染机制提供了洞察力.
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