华北农学报 ›› 2016, Vol. 31 ›› Issue (3): 38-43. doi: 10.7668/hbnxb.2016.03.006

所属专题: 小麦 生物技术

• 论文 • 上一篇    下一篇

小麦谷胱甘肽S-转移酶基因的克隆及原核表达

张蕾1, 于永昂1,2, 杨天佑1   

  1. 1. 河南科技学院 生命科技学院, 现代生物育种河南省协同创新中心, 河南 新乡 453003;
    2. 西北农林科技大学 农学院, 陕西 杨凌 712100
  • 收稿日期:2015-11-26 出版日期:2016-06-28
  • 作者简介:张蕾(1987-),女,河南新乡人,助理实验师,硕士,主要从事植物分子生物学研究。
  • 基金资助:
    国家自然科学基金项目(1305047);河南省教育厅科学技术研究重点项目(12A180011);河南省高等学校青年骨干教师资助计划项目(2014GGJS-100)

Cloning and Prokaryotic Expression of TaGST from Triticum aestivum L.

ZHANG Lei1, YU Yongang1,2, YANG Tianyou1   

  1. 1. School of Life Science and Technology, Henan Institute of Science and Technology, Collaborative Innovation Center of Modern Biological Breeding of Henan Province, Xinxiang 453003, China;
    2. College of Agronomy, Northwest A&F University, Yangling 712100, China
  • Received:2015-11-26 Published:2016-06-28

摘要: 为了进一步研究小麦谷胱甘肽-S-转移酶基因(TaGST)的功能,采用RT-PCR方法分离了小麦谷胱甘肽-S-转移酶基因(TaGST)的ORF全长cDNA,并进行了生物信息学分析。结果表明:小麦TaGST基因的ORF全长690bp,编码229个氨基酸;TaGST蛋白分子质量为25.81kDa,pI为5.29。系统进化分析表明,该基因编码蛋白与水稻OsGST蛋白的氨基酸同源性最高,与已知植物GST家族成员的氨基酸序列聚类分析将TaGST聚为Phi类GST。构建原核表达载体pET32-TaGST,对TaGST基因进行原核表达,SDS-PAGE结果表明,其所表达蛋白与预期蛋白大小一致。为进一步研究该基因的特性和功能奠定了理论基础。

关键词: 小麦, 谷胱甘肽过S-转移酶, 基因克隆, 原核表达

Abstract: To investigate the function of TaGST gene,RT-PCR was used to obtain TaGST gene open reading frame sequence from wheat and analyzed by bioinformatics method.The sequence analysis results showed that the ORF of TaGST gene had a length of 690 bp coding for 229 amino acid,and the relative molecular weight of TaGST protein was 25.81 kDa and its theoretical isoelectric point was 5.29.Homology analysis showed that the amino acid sequence of TaGST was highly homologous with Oryza sativa, and phylogenetic analysis of the relationship of the newly identified TaGST with some known plant GSTs grouped the TaGST into the class of Phi GSTs.The prokaryotic expression of TaGST gene was done after construction of its prokaryotic expression vector pET32-TaGST,and the SDS-PAGE results displayed that the expressed protein was consistent with the anticipated size.The results were expected to lay a foundation for further studies on the properities and function of this gene.

Key words: Wheat, Glutathione-S-transferase, Gene clone, Porkaryotic expression

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引用本文

张蕾, 于永昂, 杨天佑. 小麦谷胱甘肽S-转移酶基因的克隆及原核表达[J]. 华北农学报, 2016, 31(3): 38-43. doi: 10.7668/hbnxb.2016.03.006.

ZHANG Lei, YU Yongang, YANG Tianyou. Cloning and Prokaryotic Expression of TaGST from Triticum aestivum L.[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2016, 31(3): 38-43. doi: 10.7668/hbnxb.2016.03.006.

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