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携带乙肝大包膜蛋白L基因与结核Esat6融合基因植物表达载体的构建及鉴定

DOI: 10.7668/hbnxb.2011.02.001, PP. 1-6

Keywords: 结核分枝杆菌,乙肝病毒,大包膜蛋白L基因,Esat6基因,globulin-l

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Abstract:

构建包含编码结核杆菌Esat6基因和乙肝病毒大包膜蛋白(L蛋白)基因的植物双元表达载体,并转化根癌农杆菌LBA4404.分别以质粒pPIC9K-L和结核杆菌基因组为模板进行PCR扩增,获得L和Esat6基因,然后运用部分重叠聚合酶链式反应扩增出L-Esat6融合基因片段,连接到有玉米特异性启动子globulin-1的pEGG载体上,将G-L-Esat6融合基因片段酶切下,连接到含有抗除草剂基因bar的双元表达载体pCAMBIAI300上,电击法将重组质粒转化到农杆菌LBA4404中.构建了真核表达重组质粒pCAMG-L-Esat6,测序分析表明,克隆的L和Esat6序列与NCBI上公布序列一致.成功构建与转化了包含编码乙肝病毒大包膜蛋白L基因和结核杆菌Esat6基因的植物表达载体,并将其转化入根癌农杆菌LBA4404中,为成功研制利用转基因植物生产抗乙肝和结核联合口服疫苗奠定了基础.

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