›› 2012, Vol. 39 ›› Issue (4): 35-38.

• 生物技术 • 上一篇    下一篇

天蚕素AD和蛙Buforin Ⅱ融合蛋白在大肠杆菌中的表达

扈进冬1,2, 魏艳丽1,2, 张广志1,2, 李纪顺1,2, 杨合同1,2,3   

  1. 1. 山东省科学院中日友好生物技术研究中心,山东济南 250014;2. 山东省应用微生物重点实验室,山东济南 250014;3. 山东理工大学生命科学学院,山东淄博 255049
  • 收稿日期:2011-10-10 修回日期:1900-01-01 出版日期:2012-04-20 发布日期:2012-04-20
  • 通讯作者: 杨合同

Expression of Fusion Gene Composed of Cecropin AD and Frog Buforin Ⅱ Mature Fragment in E.coli

HU Jin-dong1,2, WEI Yan-li1,2, ZHANG Guang-zhi1,2, LI Ji-shun1,2, YANG He-tong1,2,3   

  1. 1. Biotechnology Center,Shandong Academy of Sciences,Jinan 250014,China;2. Shandong Provincial Key Laboratory for Applied Microorganism,Jinan 250014,China;3. School of Life Sciences,Shandong University of Technology,Zibo 255049,China
  • Received:2011-10-10 Revised:1900-01-01 Online:2012-04-20 Published:2012-04-20

摘要: 本试验采用改良二步全基因合成法人工合成了含大肠杆菌偏爱密码子的天蚕素AD和蛙Buforin Ⅱ成熟片段的融合基因,并克隆至pMD18-T中,经测序确认正确后,与pET-Trx连接,构建了表达载体pET-Trx-CAD-Buforin Ⅱ,并在大肠杆菌BL21(DE3)中诱导表达。表达产物占菌体总蛋白的35%,经羟胺裂解后对测试菌具有较好的杀菌效果,为进一步的开发与应用打下了基础。

关键词: 基因合成; CAD; Buforin Ⅱ; 载体构建

Abstract: The fragment composed of a cecropin AD and Buforin frog Ⅱ mature fragment was synthesized by using a modified two step total gene synthesis,then the fragment was cloned into pMD18-T and sequenced.Through restriction endonucleases digestion and were combinated into express vector pET-Trx,after transformed into E.coli BL21(DE3). The fusion gene was successly expressed. The quantity of expressed fusion protein accounted for probably 35% of total bacterial proteins and the fusion protein by the hydroxylamine cleavage exhibit obvious activities against the tested bacteria,for its further large-scale expression, purification and function to lay the foundation.

Key words: gene synthesis; cecropin AD; Buforin Ⅱ; construction of expression vector

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