四川农业大学学报 ›› 2015, Vol. 33 ›› Issue (01): 13-21.doi: 10.16036/j.issn.1000-2650.2015.01.003

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花生光敏色素AhphyAAhphyB基因的克隆及原核表达研究

张烨1,2, 赵术珍1, 王江山1, 夏晗1, 侯蕾1, 任丽3, 王兴军1,2   

  1. 1. 山东省农业科学院生物技术研究中心, 山东省作物遗传改良与生态生理重点实验室, 济南 250100;
    2. 山东大学生命科学学院, 济南 250100;
    3. 开封农林科学研究院, 河南 开封 475004
  • 收稿日期:2014-12-01 出版日期:2015-03-31 发布日期:2017-02-28
  • 通讯作者: 王兴军,研究员,主要从事花生生物技术研究,E-mail:xingjunw@hotmail.com。 E-mail:xingjunw@hotmail.com
  • 作者简介:张烨,博士研究生。
  • 基金资助:
    国家自然科学基金(31471526);山东省博士基金(BS2013SW006);山东省生物资源创新项目;山东省"泰山学者"基金(tshw20100416)

Cloning and Prokaryotic Expression of PhytochromeA and PhytochromeB from Peanut

ZHANG Ye1,2, ZHAO Shu-zhen1, WANG Jiang-shan1, XIA Han1, HOU Lei1, REN Li3, WANG Xing-jun1,2   

  1. 1. Bio-Tech Research Center, Shandong Academy of Agricultural Sciences, Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Jinan 250100, China;
    2. Life Science College of Shandong U-niversity, Jinan 250100, China;
    3. Kaifeng Research Academy of Agriculture and Forestry, Kaifeng 4~5004, He'nan, China
  • Received:2014-12-01 Online:2015-03-31 Published:2017-02-28

摘要: [目的] 克隆了花生(Arachis hypogaea L.)的2个光敏色素基因,并对其进行生物信息学分析,构建这2个基因的原核表达载体,在大肠杆菌中诱导表达蛋白,为进一步纯化蛋白制备抗体以及研究这2个基因在花生发育中的作用奠定基础。[方法] 首先,根据花生转录组中编码光敏色素A基因与光敏色素B基因的部分序列,以花生叶片中提取的总RNA为模板,通过RT-PCR与RACE技术对这2个基因的全长ORF序列进行克隆;然后,使用MEGA软件分析花生光敏色素与其他物种中光敏色素的亲缘关系;构建AhphyAAhphyB的原核表达载体,转化大肠杆菌BL21并诱导蛋白表达。[结果] 2个基因全长ORF分别为3378bp和3456bp,分别编码1125和1151个氨基酸的蛋白;其氨基酸序列与大豆的光敏色素A蛋白和光敏色素B蛋白的相似性分别为88%和90%;经SDS-PAGE检测,在大肠杆菌中2个基因均能受IPTG诱导表达产生蛋白。[结论] 利用RT-PCR与RACE技术从花生中克隆得到了2个光敏色素基因,成功构建了原核表达载体,并使其在大肠杆菌中得到了高效表达。

关键词: 花生, 光敏色素, 基因克隆, 原核表达

Abstract: [Objective] Two peanut phytochrome genes were cloned and analyzed. Prokaryotic expression within fusion proteins in E. coli was carried out, which could be helpful for future study on antibody preparation and functional analysis of these genes during peanut pod development. [Method] Two partial sequences of phytochrome genes were obtained from peanut transcriptome sequences. RT-PCR, 3' and 5' RACE were used to acquire the full length ORFs of these two genes. Phylogenetic relationships between two peanut phytochrome and phytochromes from other plants were analyzed using MEGA. The expression vectors were constructed and IPTG was used to induce the fusion proteins expression in E. coli BL21. [Results] The full length of AhPhyA and AhPhyB ORF was 3 378 bp and 3 456 bp, encoding proteins with 1 125 and 1 151 amino acid, respectively. The similarity of AhPhyA and AhPhyB to GmPhyA and GmPhyB was 88% and 90%, respectively. The SDS-PAGE result showed that fusion proteins were successfully induced in E. coli by IPTG. [Conclusion] The full length ORF of AhPhyA and AhPhyB were obtained. The expression vectors were constructed using partial sequences of AhphyA and AhphyB. The fusion proteins were successfully induced in E. coli BL21 by IPTG.

Key words: Arachis hypogaea L., phytochrome, gene cloning, prokaryotic expression

中图分类号: 

  • S565.2