食品科学 ›› 2006, Vol. 27 ›› Issue (11): 199-202.

• 基础研究 • 上一篇    下一篇

黑曲霉糖化酶基因在荧光假单胞菌中的表达

 王辉,  胡玉红,  孙文敬, 王子微,  刘敬泽   

  1. 河北师范大学生命科学学院
  • 出版日期:2006-11-15 发布日期:2011-11-28

Expression of the Glucoamylase Gene of Aspergillus niger in Pseudomonas fluorescens

 WANG  Hui,   Hu-Yu-Hong,   Sun-Wen-Jing, WANG  Zi-Wei,   Liu-Jing-Ze   

  1. College of Life Sciences,Hebei Normal University,Shijiazhuang 050016,China
  • Online:2006-11-15 Published:2011-11-28

摘要:  黑曲霉糖化酶基因cDNA按正确的读码框架克隆到广宿主表达载体pBBR1MCS-2,构建出含黑曲霉糖化酶基因的表达载体pBBR1MCS-2GA,用三亲和接合转化法将重组质粒导入2-酮基-D-葡萄糖酸高产菌株荧光假单胞菌AR4。得到重组菌ARW4,经SDS-PAGE凝胶电泳和Westernblot分析显示,黑曲霉糖化酶基因在ARW4中得到表达,表达产物主要以不溶性包涵体形式存在。

关键词: 黑曲霉, 糖化酶基因, 荧光假单胞菌, 原核表达

Abstract:  Aspergillus niger glucoamylase gene cDNA was subcloned into broad host expression vector pBBR1MCS-2 with correct reading frame to obtain recombinant vector pBBR1MCS-2GA. Then it was transformed into Pseudomonas fluorescens AR4 which was a high yield strain of 2-keto-D-gluconic acid,and obtained recombinant bacteria ARW4. SDS-PAGE gel electrophoresis and Western blot analysis showed that the recombinant glucoamylase protein had expressed effectively in ARW4,and existed in the form of inclusion which was inactive.

Key words: Aspergillus niger, glucoamylase gene, Pseudomonas fluorescens, prokaryotic expression