生物技术通报 ›› 2016, Vol. 32 ›› Issue (6): 143-147.doi: 10.13560/j.cnki.biotech.bull.1985.2016.06.020

• 研究报告 • 上一篇    下一篇

家蝇抗菌肽diptericin基因在大肠杆菌中的表达

卢敏1,2, 白杰1, 魏凤仙1, 王琳燚1, 徐彬1, 尹清强2, 李绍钰1   

  1. 1. 河南省农业科学院畜牧兽医研究所,郑州 450002
    2. 河南农业大学牧医工程学院,郑州 450002
  • 收稿日期:2015-09-02 出版日期:2016-06-27 发布日期:2016-06-28
  • 作者简介:卢敏,女,博士研究生,研究方向:动物营养与饲料科学;E-mail:453808792@qq.com
  • 基金资助:
    河南省科技攻关项目(142102110069),国家现代农业产业技术体系项目(CARS-42)

Expression of diptericin Gene from Musca domestica in Escherichia coli

LU Min1,2, BAI Jie1, WEI Feng-xian1, WANG Lin-yi1, XU Bin1, YIN Qing-qiang2, LI Shao-yu1   

  1. 1. Institute of Animal Husbandry and Veterinary Science,Henan Academy of Agricultural Sciences,Zhengzhou 450002
    2. College of Animal Science and Veterinary Medicine,Henan Agricultural University,Zhengzhou 450002
  • Received:2015-09-02 Published:2016-06-27 Online:2016-06-28

摘要: 为了实现原核表达的途径高效获取抗菌肽蛋白,以RT-PCR的方法反转录合成家蝇的抗菌肽diptericin基因,并克隆至pGEX-4T-1载体上,转化至大肠杆菌BL21宿主菌进行表达。测序结果显示,RT-PCR克隆到长345 bp的家蝇diptericin基因,重组菌经异丙基-β-D-硫代半乳糖苷(IPTG)诱导后,通过SDS-PAGE电泳和Western-blot检测到目的蛋白的融合表达,结果表明带有GST标签的融合蛋白大小约为37 kD,并且通过GST纯化柱纯化得到了目的蛋白。

关键词: 家蝇, 抗菌肽, diptericin, 原核表达

Abstract: In order to efficiently acquire the antibacterial peptide by prokaryotic expression,diptericin gene for the antibacterial peptide in housefly was reversely synthesized by RT-PCR method. Then,diptericin gene was cloned to pGEX-4T-1 expression vector and transformed into Escherichia coli BL21 for protein expression. Sequencing result showed that housefly’s diptericin gene was 345 nucleotides in length. Recombinant pGEX-4T-1 was induced by IPTG,and the expression of diptericin fusion protein was detected by SDS-PAGE electrophoresis and Western blot. The result showed that diptericin fusion protein with GST-tag was about 37 kD,and the target protein was purified by GST purification column.

Key words: housefly, antibacterial peptide, diptericin, prokaryotic expression