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播娘蒿DsCOR基因的原核表达、蛋白纯化、及性质研究
A study on the protein expressed,purification,and character of DsCOR Gene from Descurania sophia(L.) Webb
【摘要】 利用PCR方法扩增DsCOR基因的蛋白编码序列,经BamHⅠ、SacⅠ酶切后连接入pET32a原核表达载体,构建的pET32a-DsCOR融合重组表达质粒转化大肠杆菌BL21进行原核表达.建立了"煮沸-镍离子亲和层析"的蛋白纯化方法.对纯化的DsCOR蛋白进行高温耐受性、pH耐受范围、紫外耐受性方面的研究.
【Abstract】 The ORF of DsCOR was amplified by PCR,and cloned into expression vector pET32a to construct recombinant expression plasmid pET32a-DsCOR.The recombinant plasmid was transformed into E.coli BL21 and induced to express recombinant protein with IPTG.According to hydrophilic character,The fusion protein was further purified through boiling and affinity chromatography;concentrated by PEG;analyzed by SDS-PAGE.Research about protein resistance to heat,acid,alkali and UV was done.
【关键词】 播娘蒿;
COR基因;
原核表达;
蛋白纯化;
蛋白性质;
【Key words】 Descurainia sophia(L.) Webb; COR(cold regulated gene); low temperature stress; prokaryotic expression; protein purification; protein character;
【Key words】 Descurainia sophia(L.) Webb; COR(cold regulated gene); low temperature stress; prokaryotic expression; protein purification; protein character;
【基金】 国家自然科学基金(30771312);四川省应用基础项目(2006J13-107);四川省青年基金(05ZQ026-029)
- 【文献出处】 四川大学学报(自然科学版) ,Journal of Sichuan University(Natural Science Edition) , 编辑部邮箱 ,2007年06期
- 【分类号】Q943
- 【被引频次】3
- 【下载频次】280