伪狂犬病病毒闽A株gE基因去信号肽片段在Pichia pastoris中的表达
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

国家“九五”科技攻关项目(96-C01-04-03)和国家自然科学基金资助项目(39600109).


Expression of gE Gene Fragment Deleted Signal Peptide of Pseudorabies Virus Fa Strain in Pichia pastoris
Author:
Affiliation:

Fund Project:

This work was supported by grants from The National 9th Five Years Plan Key Special Research Programs of China (96-C01-04-03) and The National Natural Sciences Foundation of China (39600109).

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    伪狂犬病病毒囊膜糖蛋白E是一种在伪狂犬病根除计划中具有重要作用的糖蛋白.将伪狂犬病病毒闽A株gE基因去信号肽片段克隆到巴斯德毕赤酵母(Pichia pastoris)表达载体pPICZαA中,获得的重组表达载体pPICZαA-FL电击转化野生型酵母菌SMD1168后,得到多株酵母工程菌SMD1168/pPICZαA-FL.经高浓度ZeocinTM筛选、表型鉴定、工程菌的诱导表达及表达产物的鉴定,最后得到高效表达gE基因去信号肽片段的酵母工程菌SMD1168/pPICZαA-FL-7.工程菌72 h培养上清的SDS-聚丙烯酰胺凝胶电泳与蛋白质印迹结果显示,gE基因去信号肽片段表达产物大小约为80 ku,比预期的63.8 ku大.凝胶薄层扫描结合Bradford蛋白质总含量测定结果表明,表达产物占工程菌培养上清总蛋白的13.49%,表达量可达11.7 mg/L.间接ELISA结果表明重组表达产物具有良好的抗原性,能够有效地区分伪狂犬病病毒gE标准阳性与阴性血清.

    Abstract:

    The envelope glycoprotein E is a major glycoprotein of pseudorabies virus, which exerts important effect in pseudorabies eradication campaign. The gE gene fragment deleted signal peptide of PRV Fa strain was inserted into Pichia pastoris expression vector pPICZαA, the resulted recombinant expression vector transformed SMD1168 competent cells and obtained engineering Pichia pastoris strain SMD1168/pPICZαA-FL. After high concentration ZeocinTM screening, phenotype identification, inductive expression, SDS-PAGE and Western blot analysis of culture supernatant, an engineering Pichia pastoris strain SMD1168/pPICZαA-FL-7 in which gE gene fragment deleted signal peptide was expressed in high levels was obtained. SDS-PAGE and Western blot indicated that expression product of gE fragment deleted signal peptide in culture supernatant of SMD1168/pPICZαA-FL-7 was about 80 ku, a little larger than expected. Gel scanning and Bradford protein analysis results showed that expression product reached 11.7 g/L, or 13.49% of total culture supernatant protein in SMD1168/ pPICZαA-FL-7.

    参考文献
    相似文献
    引证文献
引用本文

敖敬群,王瑾雯,陈新华,王珣章,龙綮新,娄高明.伪狂犬病病毒闽A株gE基因去信号肽片段在Pichia pastoris中的表达[J].生物化学与生物物理进展,2003,30(4):629-633

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2002-12-23
  • 最后修改日期:2003-01-28
  • 接受日期:
  • 在线发布日期:
  • 出版日期: