猪繁殖与呼吸综合征病毒N基因的克隆及高效表达

中国病毒学(2003)

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Abstract
本试验参照GenBank公布的Porcine reproductive and respiratory syndrome virus(PRRSV)VR2332株的核苷酸序列,设计并合成了一对引物,应用RT-PCR方法扩增出了PRRSV的核衣壳蛋白基因(N基因)。在对N基因及pET32a载体双酶切后进行连接,构建了高效原核表达载体pETN。将pETN重组质粒转化BL21(DE3)宿主菌后,对培养条件及诱导表达条件(IPTG最佳浓度、作用时间)等影响表达的因素进行优化,实现了PRRSV核衣壳蛋白基因的高效表达。
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Key words
Porcine reproductive and respiratory syndrome virus,Nucleocapsid protein gene,Amplification,Recombiant prokaryotic expression plasmid
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