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山羊痘病毒P32基因真核表达载体的构建及表达 被引量:1

Construction and expression of recombinant antigen P32 gene of goat poxvirus
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摘要 从重组克隆载体pMD18-P32中扩增出山羊痘病毒P32基因,与毕赤酵母分泌性表达载体pPIC9K相连接,构建重组表达载体pPIC9K-P32。重组质粒pPIC9K-P32用SalⅠ线性化后,与毕赤酵母(Pichia pastoris)GS115混合后电转化,使重组表达载体与酵母染色体发生同源重组。采用G418抗性梯度筛选法得到高拷贝重组菌株,甲醇诱导目的基因表达。SDS-PAGE和Western blotting分析结果表明,用酵母成功表达出了31000的重组蛋白,该蛋白具有生物学活性,能被山羊痘阳性血清识别。 The structural protein P32 gene of the goat poxvirus in the recombinant plasmid pMD18-P32 was subcloned into the Pichia pastoris expression vector pPICgK. The resultant recombinant plasmid pPICgK-P32 was transformed into P. pastoris GSl15 by electroporation. The multi-copy recombinant P. pastoris strains were screened by G418 and induced by methanol. The expressed product was analyzed by SDS-PAGE and Western blotting tests. The results indicated that the aim protein was expressed in P. pastoris, and had an immunological activity, the protein could be recognized by anti-serum against goat poxvirus.
出处 《中国兽医学报》 CAS CSCD 北大核心 2009年第8期982-985,共4页 Chinese Journal of Veterinary Science
基金 国家基础平台建设资助项目(2005DKA21205-3)
关键词 山羊痘病毒 P32基因 毕赤酵母 诱导表达 goat poxvirus P32 gene Pichia pastoris induction expression
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参考文献15

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