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Construction and expression of the recombinant containing carboxyl terminal sequence of L-type voltage-gated calcium channel α1C subunits
Author(s): 
Pages: 421-424
Year: Issue:  7
Journal: ACTA ACADEMIAE MEDICINAE XUZHOU

Keyword:  L-型电压门控钙通道α1C亚基克隆表达;
Abstract: 目的 构建增强型绿色荧光蛋白(enhanced green fluorescent protein,EGFP)标记的L型电压门控钙通道(L-type voltage-gated calcium channels,L-VGCCs)α1C亚基羧基末端肽段(CT,1587-2169)的真核表达载体,并在COS-7细胞中表达.方法 采用RT-PCR方法扩增CT的cDNA,克隆至真核表达载体pcDNA3.1;采用PCR方法扩增标签蛋白EGFP的cDNA,克隆至重组体pcDNA3.1-CT,EGFP位于CT的羧基末端;采用脂质体转染法将重组体pcDNA3.1-CT-EGFP转染COS-7细胞,通过荧光显微镜和免疫印迹等方法检测重组体的表达.结果 扩增了CT和EGFP的cDNA;构建的pcDNA3.1-CT-EGFP真核表达载体经限制性内切酶酶切鉴定及测序分析证实了其序列的正确性;荧光显微镜下转染重组质粒的COS-7细胞中观察到绿色荧光,免疫印迹分析显示pcDNA3.1-CT-EGFP转染组有明显条带.结论 成功构建pcDNA3.1-CT-EGFP真核表达载体,并且在COS-7细胞中得到表达.
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