生物技术通报 ›› 2016, Vol. 32 ›› Issue (3): 129-136.doi: 10.13560/j.cnki.biotech.bull.1985.2016.03.021

• 研究报告 • 上一篇    下一篇

七鳃鳗水通道蛋白3的克隆与生物学特性分析

赵春晖1,2,史金杰1,王浩2,刘欣2,李庆伟2   

  1. 1.辽宁师范大学生命科学学院, 辽宁省生物技术与分子药物研发重点实验室 大连 116081;2.辽宁师范大学七鳃鳗研究中心, 大连 116081
  • 收稿日期:2015-06-23 出版日期:2016-03-24 发布日期:2016-03-25
  • 作者简介:赵春晖, 女, 副教授, 硕士生导师, 研究方向:细胞生物学与蛋白质工程;E-mail:zch@lnnu.edu.cn
  • 基金资助:
    国家自然科学基金项目(31170353)

Cloning and Biological Characterization of Aquaporin 3 from Lampetra japonica

ZHAO Chun-hui1, 2, SHI Jin-jie1, WANG Hao2, LIU Xin2, LI Qing-wei2   

  1. 1. Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery, College of Life Sciences, Liaoning Normal University, Dalian 116081;
    2. Lamprey Research Center, Liaoning Normal University, Dalian 116081
  • Received:2015-06-23 Published:2016-03-24 Online:2016-03-25

摘要: 水通道蛋白3(aquaporin 3, AQP3)属于水甘油通道蛋白家族, 参与水、尿素和甘油的转运和促进细胞增殖及迁移。从七鳃鳗中克隆得到了Aqp3(LjAqp3)cDNA(GenBank 序列号KR054618), 其开放阅读框为900 bp, 编码299个氨基酸, 含6个跨膜螺旋结构域, 有信号肽。序列分析结果表明, 七鳃鳗AQP3有2个高度保守的天冬酰胺-脯氨酸-丙氨酸(NPA)模体和1个芳香族/精氨酸(ar/R)结构。进行同源序列比对发现与其它物种具有较高的同源性。实时荧光定量PCR分析表明, LjAqp3在七鳃鳗中分布广泛, 在多种组织器官中表达。

关键词: 水通道蛋白3, 七鳃鳗, 天冬酰胺-脯氨酸-丙氨酸模体

Abstract: Aquaporin 3(AQP3)belongs to the family of aquaglyceroporin, and it involves in the transport of water, urea and glycerol and promotes cell proliferation and migration. In this study, the complete cDNA sequence of Aqp3(designated as LjAqp3)was cloned from Arctic lamprey Lampetra japonica(GenBank accession number KR054618). The open reading frame of LjAqp3 was 900 bp, encoding 299 amino acids, with a predicted 6 transmembrane helix domains and a putative signal peptide. There were 2 highly conserved asparagine-proline-alanine(NPA)motifs and the aromatic/arginine(ar/R)structure in LjAQP3. Additionally, LjAQP3 shared high sequence homology with AQP3 of other species. Real-time quantitative PCR revealed the constitutive expression of LjAqp3 in multiple tissues and organs.

Key words: aquaporin 3, Lampetra japonica, asparagine-proline-alanine motif