›› 2007, Vol. 34 ›› Issue (10): 43-46.

• 生物技术 • 上一篇    下一篇

猪瘟病毒NS3蛋白ATPase/RNA解旋酶功能区的表达与纯化

郑杰1,2,宁宜宝2   

  1. 1.中国农业大学动物医学院国家动物海绵状脑病实验室,北京 100094;2.中国兽医药品监察所,北京 100081
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-10-20 发布日期:2007-10-20

Cloning Expression,Purification of Partial ATPase/RNA Helicase Functional Domain of NS3 Genes of Classical Swine Fever Virus

ZHENG Jie1,2,NING Yibao2   

  1. 1.National Animal Transmissible Spongiform Encephalopathies Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing 100094,China;2.National Classical Swine Fever Reference Laboratory,China Institute of Veterinary Drug Control, Beijing 100081,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-10-20 Published:2007-10-20

摘要: 采用RT-PCR 技术扩增出猪瘟病毒石门株和C株NS3基因的ATPase/RNA解旋酶功能区,将其克隆到表达载体pET-28a(+) 中,获得重组质粒pET-NS3SM和pET-NS3C;PCR、酶切鉴定和序列分析结果表明目的基因插入位置、方向和读码框完全正确;0.8 mmol/L IPTG诱导得到分子量为54kD 的目的蛋白,Western blotting结果表明,表达的目的蛋白与猪瘟高免血清没有出现肉眼可见的反应;通过ELISA试验结果表明,重组蛋白能被CSFV 阳性血清识别。

关键词: 猪瘟病毒; NS3基因; ATPase/RNA解旋酶; 克隆; 表达

Abstract: Partial ATPase/RNA helicase functional domain of NS3 genes of CSFV SHIMEN rain and C rain were amplified by RT-PCR;The recombinant plasmids pET-N
S3 SMand p ET-NS3C were obtained after being cloned them into expression vector pET-28a(+); And then the 54 kD target proteins were produced by inducing with 0.8 mmol/L IPTG;Western blotting showed that the expressed proteins couldn't be recognized by superserum against csfv.And ELISA showed that the expressed proteins could be recognized by superserum against csfv.

Key words: classical swine fever virus(CSFV); NS3 gene; ATPase/RNA helicase; cloning; expression

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