同时，我们还发现，病毒非结构蛋白 NS1 对该启动子具有反式激活作用，并且这种激活作用的大小取决于 NS1 蛋白在细胞中的浓度。
In addition, we found that the tr a nscriptional activity of this promoter could be transactivated by the viral nonstructural protein NS1 in a concentration dependent fashion in S2 cells.
目的研究柯萨奇B组3型病毒（CVB3）中国分离株结构蛋白VP4、非结构蛋白3D基因序列及变异性。
Objective To investigate the sequence and variation of VP4 and 3D gene of a coxsackievirus B3 Chinese isolate(CVB3-Chi).
NS2蛋白作为非结构蛋白，主要参与病毒DNA的复制及调节基因的表达。
NS2 protein as a non-structural protein mainly involved in viral DNA replication and regulation of gene expression.
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