首都医科大学学报 ›› 2001, Vol. 22 ›› Issue (1): 1-5.

• 论著 • 上一篇    下一篇

pBV-BPI600重组表达载体的构建及其在E. coli中的表达

安云庆, 刘箐, 柯岩, 沈海中   

  1. 首都医科大学微生物学和免疫学教研室
  • 收稿日期:2000-04-17 修回日期:1900-01-01 出版日期:2001-01-15 发布日期:2001-01-15

Construction of pBV-BPI600 Recombinant Expression Vector and its Expression in E. coli

An Yunqing, Liu Qing, Ke Yan, Shen Haizhong   

  1. Department of Microbiology and Immunology, Capital University of Medical Sciences
  • Received:2000-04-17 Revised:1900-01-01 Online:2001-01-15 Published:2001-01-15

摘要: ①采用RT-PCR技术,以qHL-60细胞mRNA为模板扩增获得编码BPI氨基端193个氨基酸(rBPI21)的基因片段(BPI600);EcoRI/BamHI酶切扩增产物获得BPI200bp和BPI400bp2个基因片段.②成功构建PUC18-BPI200和PUC18-BPI400重组克隆载体,DNA测序分析结果与文献报道一致.③成功构建pBV220-BPI600重组表达载体;转化E.coliDH5α感受态细胞,诱导目的重组蛋白表达;经SDS-PAGE电泳和Western-blot鉴定,证实表达的重组蛋白确为外源基因(BPI600bp)编码的产物BPI21重组蛋白.

关键词: 重组杀菌/渗透增强蛋白, pBV220表达载体, PUC18克隆载体

Abstract: BPI 600 bp gene which encode 193 amino acid fragments(rBPI21)BPI N-terminal was amplified by RT-PCR from mRNA that were extracted from qHL-60; It was digested by EcoRI and BamHI to obtain BPI 400 bp and BPI 200 bp fragments.②PUC18-BPI200 and PUC18-BPI400 recombinant cloning vector were successfully constructed, and sequences were identical with those of the report. ③pBV-BPI600 recombinant expression vector was successfully constructed, It was transformated into the competent E. coli DH5α and BPI21 recombinant protein was expressed by temperature induced method. The results of SDS-PAGE and Western blot has proved that the expressed recombinant protein is rBPI21 which is encoded by BPI600 gene.

Key words: recombinant bactericidal/permeability increasing protein, pBV220 expression vector, PUC18 cloning vector

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