浙江农业学报 ›› 2021, Vol. 33 ›› Issue (9): 1581-1591.DOI: 10.3969/j.issn.1004-1524.2021.09.02

• 作物科学 • 上一篇    下一篇

杜仲ABC转运蛋白基因家族成员鉴定与分析

蔡方阳1(), 赵懿琛1,*(), 李义2, 赵德刚1,3   

  1. 1.贵州大学 生命科学学院/茶学院/山地植物资源保护与种质创新省部共建教育部重点实验室,贵州 贵阳 550025
    2.美国康涅狄格大学 转基因植物研究中心,斯托斯 康涅狄格州 06269
    3.贵州省农业科学院 农业农村部植物新品种测试贵阳分中心,贵州 贵阳 550006
  • 收稿日期:2020-11-09 出版日期:2021-09-25 发布日期:2021-10-09
  • 通讯作者: 赵懿琛
  • 作者简介:* 赵懿琛,E-mail: yczhao@gzu.edu.cn
    蔡方阳(1997—),女,贵州安顺人,硕士研究生,研究方向为植物基因工程。E-mail: caifangyang1997@163.com
  • 基金资助:
    国家自然科学基金(31660076);贵州省教育厅青年科技人才成长项目(黔教科KY〔2016〕126);贵州省生物学一流学科建设项目(GYNY〔2017〕009)

Identification and analysis of ABC transporters family from Eucommia ulmoides

CAI Fangyang1(), ZHAO Yichen1,*(), LI Yi2, ZHAO Degang1,3   

  1. 1. College of Life Sciences/College of Tea Sciences/Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region of Ministry of Education, Guizhou University, Guiyang 550025, China
    2. Transgenic Plant Facility Department of Plant Science, University of Connecticut, Storrs, CT 06269, USA
    3. Guiyang Branch Center for Testing of New Plant Varieties of Ministry of Agriculture and Rural Affairs, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
  • Received:2020-11-09 Online:2021-09-25 Published:2021-10-09
  • Contact: ZHAO Yichen

摘要:

ABC转运蛋白(ATP—binding cassette transpoter)是一类庞大而古老的跨膜运输蛋白家族,在生物体内参与多种物质的转运积累、有害物质解毒、气孔调节、植物防御等生理活动。杜仲(Eucommia ulmoides Oliv)作为重要的中药材,其药用成分主要为次生代谢产物,次生代谢物转运与积累过程需要ABC转运蛋白的参与。利用生物信息学手段对杜仲ABC转运蛋白基因家族进行鉴定,并分析该家族蛋白质性质和结构、跨膜结构、亚细胞定位、系统进化关系。研究表明,EuABC家族生物信息学预测有76个成员,含有1~7个保守基序;编码蛋白多为稳定蛋白,主要分布于细胞质膜上,二级结构以α-螺旋和无规卷曲为主要构成元件;进化树分析表明,杜仲ABC转运蛋白家族可分为8个亚家族(A~G;I),每组成员数量分别为3、19、14、1、1、1、29、8。研究结果可为进一步研究杜仲次生代谢物质转运与积累奠定基础,也为其他植物ABC转运蛋白家族的研究提供了参考依据。

关键词: 杜仲, ABC转运蛋白, 基因家族, 跨膜结构, 亚细胞定位, 进化树

Abstract:

ATP-binding cassette (ABC) transpoter is ancient and huge family of transmembrane transport proteins, which are involved in the transport and accumulation of a variety of substances, detoxification of harmful substances, stomatal regulation, plant defense and other physiological activities in organisms. Eucommia ulmoides Oliv, as an important Chinese medicinal material, is mainly composed of secondary metabolites, and the transport and accumulation of secondary metabolites require the participation of ABC transporters. In this study, ABC transporter gene family in E. ulmoides was identified, then its molecular characteristics were analyzed from the aspects of gene identification, protein properties, protein structure, transmembrane structure, subcellular localization and phylogenetic relationship by bioinformatics method. The results predicted by bioinformatics showed that EuABC transporter protein family had 76 members, including 1-7 conserved motifs; most of the encoded proteins were stable proteins, which were mainly distributed on the plasma membrane, and the main component of secondary structure was α-helix and random coil, mainly distributed in the plasma membrane. Analysis of evolutionary tree showed that EuABC transporter family could be divided into eight subfamilies (A-G and I), and the number of members in each group was 3, 19, 14, 1, 1, 1, 29 and 8, respectively. The research results provided a favorable foundation for further study on the transport and accumulation of secondary metabolites in E. ulmoides, and also provided a reference for study of ABC transporter families of other plant.

Key words: Eucommia ulmoides Oliv, ATP-binding cassette transporters, gene family, transmembrane structure, subcellular localization, phylogenetic tree

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