›› 2012, Vol. 39 ›› Issue (3): 78-80.

• 生物技术 • 上一篇    下一篇

梅花鹿朊蛋白核心片段的基因克隆与高效表达

刘东1, 卢士英1, 李岩松1,2, 李兆辉1, 王光明1, 张媛媛1, 周玉1, 宋杰1, 柳增善1, 任洪林1   

  1. 1. 人兽共患病研究教育部重点实验室 吉林大学人兽共患病研究所 畜牧兽医学院,吉林长春 130062;2. 吉林大学军需科技学院,吉林长春 130062
  • 收稿日期:1900-01-01 修回日期:2011-12-16 出版日期:2012-03-20 发布日期:2012-03-20
  • 通讯作者: 任洪林

Cloning and High-level Expression of a Core Fragment Gene of Prion Protein from Sika Deer (Cervus nippon)

LIU Dong1, LU Shi-ying1, LI Yan-song1,2, LI Zhao-hui1, WANG Guang-ming1, ZHANG Yuan-yuan1, ZHOU Yu1, SONG Jie1, LIU Zeng-shan1, REN Hong-lin1   

  1. 1. Key Laboratory for Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Animal Science and Veterinary Medicine, Jilin University, Changchun 130062, China;2. College of Light Industry and Management Technology, Jilin University, Changchun 130062, China
  • Received:1900-01-01 Revised:2011-12-16 Online:2012-03-20 Published:2012-03-20

摘要: 本试验根据梅花鹿朊蛋白基因序列设计引物,利用PCR的方法从梅花鹿基因组DNA中扩增朊病毒蛋白酶抵抗区域PrPres,将该片段分别与表达载体pET-Trx和pET-His连接,构建重组表达载体pET-Trx-PrPres和pET-His-PrPres。分别将两个重组表达载体转入E.coli BL21(DE3) plys宿主菌中,37 ℃诱导4 h,经SDS-PAGE分析,Trx-PrPres和His-PrPres表达量分别为38.2%和30.1%。

关键词: 梅花鹿; 朊蛋白; 朊病毒; 蛋白酶抗性; 原核表达

Abstract: The gene of prion protein protease resistance fragment PrPres of the Sika deer was amplified by PCR using a pair of specific primers. The product of PCR was cloned into the expression vectors of pET-Trx and pET-His. The restructuring plasmids were transformed into the host bacterium of E.coli BL21 (DE3) plys, at 37 ℃ for 4 h. SDS-PAGE result illustrated that fusion proteins of Trx-PrPres and His-PrPres were highly expressed. The expression level of fusion proteins were 38.2% and 30.1%, respectively.

Key words: Sika deer; prion protein; PrPsc ; proteinase resistant protein; prokaryotic expression

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