华北农学报 ›› 2012, Vol. 27 ›› Issue (6): 11-14. doi: 10.3969/j.issn.1000-7091.2012.06.003

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鹅坦布苏病毒非结构蛋白NS1的原核表达及纯化

赵冬敏, 黄欣梅, 刘宇卓, 张敬峰, 韩凯凯, 谢星星, 周晓波, 李银   

  1. 江苏省农业科学院兽医研究所, 农业部兽用生物制品工程技术重点实验室, 国家兽用生物制品工程技术研究中心, 江苏南京 210014
  • 收稿日期:2012-08-10 出版日期:2012-12-28
  • 通讯作者: 李银(1966-),男,内蒙古赤峰人,研究员,博士,主要从事家禽疫病流行病学和防治研究。
  • 作者简介:赵冬敏(1982-),女,山东兖州人,助理研究员,博士,主要从事家禽重大疫病流行病学和致病分子机制的研究。
  • 基金资助:
    江苏省自然科学基金项目(BK2012376);国家自然科学基金项目(31172345);江苏省农业科技自主创新资金项目(cx(11)4039)

Prokaryotic Expression and Purification of Nonstructural Protein NS1 of Goose Tembusu Virus

ZHAO Dong-min, HUANG Xin-mei, LIU Yu-zhuo, ZHANG Jing-feng, HAN Kai-kai, XIE Xing-xing, ZHOU Xiao-bo, LI Yin   

  1. Institute of Veterinary Science, Jiangsu Academy of Agricultural Science, Key Laboratory of Veterinary Biologicals Engineering and Technology, Ministry of Agriculture, National Center for Engineering Research of Veterinary Bio-products, Nanjing 210014, China
  • Received:2012-08-10 Published:2012-12-28

摘要: 根据鹅坦布苏病毒JS804株非结构蛋白NS1基因序列,设计1对特异性引物,利用PCR方法扩增得到完整的NS1基因,并将其克隆至原核表达载体pET28a和pET32a上,构建出重组表达质粒pET28a-NS1和pET32a-NS1,转化至BL21(DE3)中,经IPTG诱导得到NS1融合蛋白(His-NS1),其分子质量约分别为44,58 kDa,均在诱导后6 h达到表达量高峰。分析显示,2种融合蛋白均以包涵体形式存在,包涵体经过变性和复性后均可获得单一、高表达量的目的蛋白,为进一步开展关于鹅坦布苏病毒NS1蛋白的研究奠定了基础。

关键词: 鹅坦布苏病毒, NS1蛋白, 原核表达

Abstract: The goose tembusu virus JS804 strain non-structural protein NS1 gene was amplified by PCR with the specific primers designed on the basis of NS1 gene and then was inserted into the prokaryotic vector pET28a and pET32a for the construction of recombinant expression plasmid pET28a-NS1 and pET32a-NS1. Then pET28a-NS1 and pET32a-NS1 were transformed respectively into Escherichia coli BL21 ( DE3). The recombinant protein NS1s ( His-NS1) were obtained with the induction of IPTG and the molecular weight of the fusion protein was 44 kDa and 58 kDa respectively. After 6 h induction by IPTG, the yield of fusion proteins reached peaks. The analysis showed that two fusion proteins were expressed in Escherichia coli into inclusion bodies. The fusion protein was purified to pure and high-level proteins by extracting the inclusion bodies with urea. The results laid the foundation for the further studies on the NS1 protein of goose tembusu virus.

Key words: Goose tembusu virus, NS1 protein, Prokaryotic expression

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引用本文

赵冬敏, 黄欣梅, 刘宇卓, 张敬峰, 韩凯凯, 谢星星, 周晓波, 李银. 鹅坦布苏病毒非结构蛋白NS1的原核表达及纯化[J]. 华北农学报, 2012, 27(6): 11-14. doi: 10.3969/j.issn.1000-7091.2012.06.003.

ZHAO Dong-min, HUANG Xin-mei, LIU Yu-zhuo, ZHANG Jing-feng, HAN Kai-kai, XIE Xing-xing, ZHOU Xiao-bo, LI Yin. Prokaryotic Expression and Purification of Nonstructural Protein NS1 of Goose Tembusu Virus[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2012, 27(6): 11-14. doi: 10.3969/j.issn.1000-7091.2012.06.003.

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