首都医科大学学报 ›› 2006, Vol. 27 ›› Issue (6): 788-791.

• 基础研究 • 上一篇    下一篇

融合蛋白表达载体的构建及在大肠杆菌中的表达

李莉, 高秀来, 宋一志, 陆涛, 景鹏   

  1. 首都医科大学基础医学院解剖学教研室
  • 收稿日期:2006-02-20 修回日期:1900-01-01 出版日期:2006-12-24 发布日期:2006-12-24

Reconstruction and Expression of Regucalcin Fusion Protein in E.coli

Li Li, Gao Xiulai, Song Yizhi, Lu Tao, Jing Peng   

  1. Department of Anatomy, School of Basic Medical Science, Capital University of Medical Sciences
  • Received:2006-02-20 Revised:1900-01-01 Online:2006-12-24 Published:2006-12-24

摘要: 目的 构建人类regucalcin重组原核表达载体.方法 用RT-PCR的方法从人类肝癌细胞系HepG2中扩增出regucalcin基因cDNA序列,应用T克隆载体及pET-32a(+)表达载体后,将质粒转化进入原核表达菌株进行表达.结果 表达产物经SDS-PAGE电泳分析后,在45 000处有一明显表达条带,与理论结果相符.结论 成功构建融合表达载体Pet-regucalcin,并在原核细胞中表达出人类regucalcin-His融合蛋白.

关键词: RT-PCR, regucalcin, 基因表达, 融合蛋白

Abstract: Objective To construct the prokaryotic expression vector of the human regucalcin gene.Methods To get the human regucalcin cDNA from human live cancer HepG2 cells with RT-PCR,and then inserted the fragment of regucalcin into pMD-18 simple T vector.The amplified products were cloned into the prokaryotic expression vector pET-32a(+).Results There was one obvious band at the position of relative molecular weight 45 000 after SDS-PAGE analysis,and it was equivalent to the expected value.Conclusion To construct the recombinant fusion expression vector and to express the fusion protein in E.coli successfully.

Key words: RT-PCR, regucalcin, gene expression, fusion protein

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