[an error occurred while processing this directive]

Plant Diversity ›› 2008, Vol. 30 ›› Issue (6): 688-692.DOI: 10.3724 SP.J.1143.2008.08038

• 研究论文 • 上一篇    下一篇

水稻中一个谷胱甘肽转移酶基因的克隆、表达和酶活性分析

胡廷章1 , 2 , 黄小云2 , 肖国生2 , 屈霄霄1   

  1. 1 重庆大学生物工程学院, 重庆 400044 ; 2 重庆三峡学院生物系, 重庆 404000
  • 收稿日期:2008-03-15 出版日期:2008-12-25 发布日期:2008-12-25

Molecular Cloning, Expression and Activity Analysis of a Glutathione S-transferase in Rice

HU Ting-Zhang1 ,2 , HUANG Xiao-Yun2 , XIAO Guo-Sheng2 , QV Xiao-Xiao1   

  1. 1 Bioengineering College of Chongqing University , Chongqing 400044 , China; 2 Department of Biology, Chongqing Three Gorges University , Chongqing 404000 , China

  • Received:2008-03-15 Online:2008-12-25 Published:2008-12-25

摘要: OsGSTL1 是位于水稻3 号染色体上的一个λ类谷胱甘肽转移酶基因, 由8 个内含子和9 个外显子组成, 编码一个由243 个氨基酸组成的多肽链。将OsGSTL1 克隆到酵母表达载体pYTV 上, 转化大肠杆菌,然后再转化酵母菌PEP4。Western 印迹分析表明外源OsGSTL1 基因在转基因酵母中表达, 分析半乳糖诱导表达的酵母粗提液的谷胱甘肽转移酶活性表明: 转基因酵母的谷胱甘肽转移酶较非转基因酵母和未诱导的酵母高, 说明OsGSTL1 在转基因酵母中受半乳糖的诱导表达, 具有谷胱甘肽转移酶活性。

关键词: 谷胱甘肽转移酶, 水稻, Western 印迹分析, GST 活性

Abstract: OsGSTL1 is a glutathione S-transferase (GSTs , EC 2. 5 . 1 . 18 ) , lambda class gene in chromosome 3 of rice ( Oryza sativa L .) . It includes 8 introns and 9 exons, and encodes a protein of 243 amino acid residues . The OsGSTL1 gene was cloned into pYTV vector and was transformed into yeast strain PEP4 .Western blot analysis showed the exogenous OsGSTL1 was expressed in transformed yeast . GST activity of crude extracts of yeast showed the OsGSTL1 transgenic yeast had higher levels of GST activities than control yeasts, which demonstrate the OsGSTL1 has glutathione S- transferase activity .

Key words: Glutathione S-transferase

中图分类号: