华北农学报 ›› 2007, Vol. 22 ›› Issue (1): 103-107. doi: 10.3321/j.issn:1000-7091.2007.01.024

所属专题: 生物技术

• 论文 • 上一篇    下一篇

糖化酶工业株的鉴定及糖化酶基因的克隆

马丽娜, 陈喜文, 陈德富   

  1. 南开大学生命科学学院, 天津 300071
  • 收稿日期:2006-05-20 出版日期:2007-02-28
  • 通讯作者: 陈德富(1965-),男,湖南新宁人,博导,教授,主要从事分子遗传学研究工作。
  • 作者简介:马丽娜(1981-),女,河北石家庄人,在读硕士,主要从事分子遗传学方面研究工作。
  • 基金资助:
    天津市自然科学基金资助项目(043606711)

Identification of Industrial Strains for Glucoamylase Production and Gene Cloning of Glucoamylase

MA Li-na, CHEN Xi-wen, CHEN De-fu   

  1. College of Life Sciences, Nankai University, Tianjin 300071, China
  • Received:2006-05-20 Published:2007-02-28

摘要: 对4种糖化酶工业株的rDNA片段进行克隆,在对比其rDNA-ITS1序列与GenBank数据库的基础上,结合形态学观察对菌株进行了鉴定。结果显示,4种菌株分别为黑曲霉、无花果曲霉、米曲霉和灰色小克银汉霉。通过Me-gAlign得到的进化树表明,前3种菌株亲缘关系较近,三者与灰色小克银汉霉的亲缘关系较远。进一步克隆了黑曲霉、无花果曲霉和米曲霉的糖化酶基因,并在毕赤酵母中实现了分泌表达。

关键词: rDNA-ITS1, 进化树, 曲霉, 糖化酶, 毕赤酵母

Abstract: Sequence of the rDNAS were isolated and sequenced from four industrial strains of glucoamylase production. Based on BLASTn analysis of ITS1 and their morphological features, four strains were identified as Aspergillus niger, A. ficuum, A. oryzae, and Cunninghamella bertholletiae. Phylogenetic tree constructed by MegAlign indicates that A. niger, A. ficuum and A. oryzae are closely related, while C. bertholletiae are away from the group. The glucoamylase genes were cloned from the former three strains, and finally these genes get secreted expression in Pichia pastoris.

Key words: rDNA-ITS1, Phylogenetic tree, Aspergillus, Glucoamylase, Pichia pastoris

中图分类号: 

引用本文

马丽娜, 陈喜文, 陈德富. 糖化酶工业株的鉴定及糖化酶基因的克隆[J]. 华北农学报, 2007, 22(1): 103-107. doi: 10.3321/j.issn:1000-7091.2007.01.024.

MA Li-na, CHEN Xi-wen, CHEN De-fu. Identification of Industrial Strains for Glucoamylase Production and Gene Cloning of Glucoamylase[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2007, 22(1): 103-107. doi: 10.3321/j.issn:1000-7091.2007.01.024.

使用本文