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植物研究 ›› 2011, Vol. 31 ›› Issue (1): 56-60.doi: 10.7525/j.issn.1673-5102.2011.01.010

• 论文 • 上一篇    下一篇

标记蛋白HPT的表达、纯化及免疫活性鉴定

高彬1,2;张海燕2;范海1*   

  1. 1.山东师范大学逆境植物重点实验室,济南 250014;2.中国科学院植物研究所,北京 100093
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-01-20 发布日期:2011-01-20
  • 通讯作者: 范海
  • 基金资助:
     

Expression,Purification and Immunoreactivity of Hygromycin-B-Phosphotransferase

GAO Bin;ZHANG Hai-Yan;FAN Hai*   

  1. 1.Key Laboratory of Plant Stress,Shangdong Normal University,Jinan 250014;2.Institute of Botany,the Chinese Academy of Sciences,Beijing 100093
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-01-20 Published:2011-01-20
  • Contact: FAN Hai
  • Supported by:
     

摘要: 构建含有HPT的原核表达质粒,经诱导表达纯化后获得HPT抗体。从含有hpt的质粒pCambia1301上扩增目的基因,经SalⅠ和NotⅠ双酶切后与原核表达载体pET-28b(+)进行粘性末端连接,成功构建了pET-28b-hpt质粒,并转化到宿主细菌大肠杆菌Rosset(DE3)中进行蛋白表达。在异丙基硫代-β-D-半乳糖苷(IPTG)诱导下,pET-28b-hpt原核表达载体在E.coli Rosset菌株中以包涵体的形式高效表达了HPT蛋白,并以纯化的目的蛋白为抗原免疫兔制备了多克隆抗体。利用本方法可以获得特异性强、灵敏度高的多克隆抗体。

关键词: 潮霉素磷酸转移酶, 原核表达, 重组蛋白, 多克隆抗体

Abstract: The prokaryotic expression plasmid of hygromycin-B-phosphotransferase(HPT) was constructed. The hpt gene was cloned by PCR. It was digested by SalⅠ/NotⅠand subcloned into expression vector pET-28b(+). pET-28b-hpt was transferred into E. coli Rosset; fusion protein was induced by isopropyl-β-D-thiogalactopyranoside (IPTG) and analyzed by SDS-PAGE. The most products existed in an inclusion body form. The HPT protein purified by Ni2+-NTA column was used to immunize New Zealand rabbits. The HPT polyclonal antibodies reveal high sensitivity and specificity.

Key words: hygromycin-B-phosphotransferas, prokaryotic expression, recombinant protein, polyclonal antibodies

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