Department of Molecular and Cell Biology, Centro Nacional de Biotecnología (CNB-CSIC), Campus Universidad Autónoma de Madrid, Cantoblanco, Madrid, Spain.
J Virol. 2012 Jan;86(2):1261-6. doi: 10.1128/JVI.06428-11. Epub 2011 Nov 16.
Coronavirus replication and transcription are processes mediated by a protein complex, with the RNA-dependent RNA polymerase (RdRp) as a main component. Proteomic analysis of highly purified transmissible gastroenteritis virus showed the RdRp to be a component of the viral particles. This finding was confirmed by Western blotting, immunofluorescence, and immunoelectron microscopy analyses. Interestingly, the replicase nonstructural proteins 2, 3, and 8 colocalized with the RdRp in the viral factories and were also incorporated into the virions.
冠状病毒的复制和转录是由一个蛋白质复合物介导的过程,其中 RNA 依赖性 RNA 聚合酶(RdRp)是主要成分。对高度纯化的传染性胃肠炎病毒的蛋白质组分析表明,RdRp 是病毒颗粒的组成部分。这一发现通过 Western blot、免疫荧光和免疫电子显微镜分析得到了证实。有趣的是,复制酶非结构蛋白 2、3 和 8 与 RdRp 在病毒工厂中共定位,并被整合到病毒粒子中。