A precipitation-based assay to analyze interactions of viral particles with cytosolic host factors.

A precipitation-based assay to analyze interactions of viral particles with cytosolic host factors.
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基于沉淀的分析病毒颗粒与胞质宿主因子相互作用的方法

DOI:
10.1007/978-1-4939-0428-0_13
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发表时间:
2014
影响因子:
--
通讯作者:
B Sodeik
B Sodeik
中科院分区:
--
文献类型:
--
作者:
Radtke K;F Anderson ;B Sodeik

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由于病毒是专性的细胞内寄生虫,病毒颗粒、亚病毒结构和病毒蛋白需要宿主蛋白的支持来促进细胞内的运输、病毒基因的表达、复制和逃避抗病毒宿主的反应。我们设计了一种体外生化方法来分析胞液因子与单纯疱疹病毒衣壳的特定相互作用,并通过免疫印迹、质谱学和免疫电子显微镜表征与不同类型病毒颗粒特异性共沉淀的宿主蛋白。我们的方法弥合了免疫共沉淀和酵母双杂交等方法之间的差距,这些方法确定蛋白质复合体的单个亚基之间的直接结合,以及显微镜方法分析完整病毒颗粒和完整细胞中宿主因子复合体之间的动态相互作用。我们的方法可以扩展到对疱疹病毒衣壳和其他具有更复杂宿主结构的病毒结构的功能分析,如微管运输、核孔基因组去涂层或宿主膜上的衣壳被膜。
Since viruses are obligate intracellular parasites, viral particles, subviral structures, and viral proteins enlist the support of host proteins to foster intracellular transport, viral gene expression, replication, and evasion from antiviral host responses. We have devised a biochemical in vitro method to analyze specific interactions of cytosolic factors with capsids of herpes simplex virus and to characterize host proteins that specifically coprecipitate with different types of viral particles by immunoblotting, mass spectrometry, and immunoelectron microscopy.Our method bridges the gap between assays such as co-immunoprecipitation and yeast-two-hybrid approaches that determine direct binding between individual subunits of protein complexes and microscopy methods that analyze the dynamic interplay between intact viral particles and host factor complexes in intact cells. Our protocol can be extended to functional analyses of herpesvirus capsids and other viral structures with more complex host structures such as microtubule transport, genome uncoating at nuclear pores, or capsid envelopment at host membranes.
DOI: --
发表时间: 1976
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通过免疫电子显微镜直接标记蛋白质复合物中的成分。
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