食品科学 ›› 2008, Vol. 29 ›› Issue (6): 198-201.

• 生物工程 • 上一篇    下一篇

重组牙鲆生长激素基因片断在毕赤酵母中的表达

 邢福国, 张培军, 谭训刚, 刘阳   

  1. 中国农业科学院农产品加工研究所; 中国科学院海洋研究所; 中国科学院海洋研究所
  • 出版日期:2008-06-15 发布日期:2011-08-26

Expression of Recombinant Flounder Growth Hormone Gene in Pichia pastoris

 XING  Fu-Guo, ZHANG  Pei-Jun, TAN  Xun-Gang, LIU  Yang   

  1. 1. Institute of Agro-food Science and Technology, Chinese Academy of Agricultural Sciences; 2. Institute of Oceanology, Chinese Academy of Sciences
  • Online:2008-06-15 Published:2011-08-26

摘要: 为了开发一种有效的重组牙鲆生长激素(r-fGH)的方法,利用PCR的方法从牙鲆cDNA文库中克隆得到了牙鲆生长激素(fgh)的cDNA片断。接着将这个fgh片断克隆到整合型质粒pAO815,它可以在甲醇诱导启动子的调控下表达外源蛋白。利用这种包含一个fgh插入片段的克隆来构建含有2个和3个头尾顺序排列的fgh表达框的表达质粒。利用氯化锂转化的方法将所构建的质粒转化到毕赤酵母GS115,然后进行筛选、培养和0.5%甲醇诱导表达,最后得到重组表达的牙鲆生长激素。

关键词: 牙鲆, 重组牙鲆生长激素, 毕赤酵母, 基因表达

Abstract: In order to develop an efficient method for recombinant flounder growth hormone (r-fGH) production,a cDNA fragment coding for the flounder growth hormone (fgh) was amplified by PCR. Then fgh gene was cloned into the integrative plasmid pAO815 under the control of a methanol-inducible promoter. Clones containing a single fgh insert were used to construct cassettes bearing 2 and 3 copies of fgh tandem. The constructed plasmid was then transformed into Pichia pastoris cell line GS115 by lithium chloride transformation method. The transformants were screened, cultured and induced by 0.5% methanol. By these steps, the recombinant flounder growth hormone gene is expressed in Pichia pastoris.

Key words: flounder, recombinant flunder growth hormone, Pichia pastoris, gene expression