生物技术通报 ›› 2013, Vol. 0 ›› Issue (12): 78-83.

• 研究报告 • 上一篇    下一篇

RACE法克隆亚麻COMT基因及生物信息学分析

龙松华1 乔瑞清1 陈信波2 邱财生1 邓欣1 郭媛1 郝冬梅1 王玉富1   

  1. 1. 中国农业科学院麻类研究所,长沙 410205
    2. 湖南农业大学作物基因工程湖南省重点实验室,长沙 410128
  • 收稿日期:2013-06-05 出版日期:2013-12-20 发布日期:2013-12-20
  • 作者简介:龙松华,男,硕士,研究方向:植物分子生物学;E-mail:longsonghua79452@163.com
  • 基金资助:
    国家自然科学基金项目(31000745),国家麻类产业技术体系(CARS-19-E14)

RACE Cloning and Bioinformatics Analysis of Flax COMT Gene

Long Songhua1, Qiao Ruiqing1, Chen Xinbo2, Qiu Caisheng1, Deng Xin1, Guo Yuan1, Hao Dongmei1, Wang Yufu1   

  1. 1. The Institute of Bast Fiber Crops,Chinese Academy of Agricultural Sciences,Changsha 410205
    2. Crop Gene Engineering Key Laboratory of Hunan Province,Hunan Agricultural University,Changsha 410128,
  • Received:2013-06-05 Published:2013-12-20 Online:2013-12-20

摘要: 利用RACE 技术克隆得到亚麻木质素合成关键酶基因COMT基因的cDNA 全长序列,该基因cDNA 全长1 726 bp(GenBank 登录号为KC832865)。含有1 104 bp完整的开放阅读框,5'非编码区长423 bp,3'非编码区长199 bp。对序列进行生物信息学分析的结果:编码的蛋白由367个氨基酸组成(其中亮氨酸38个,丙氨酸32个和丝氨酸28个),相对分子量为40 kD,等电点pI为5.7;蛋白质二级结构以无规则卷曲和α-螺 旋为主;构建系统进化树表明与赤桉(Eucalyptus camaldulensis)亲缘关系最近。

关键词: 亚麻, 木质素, COMT基因, RACE, 生物信息学分析

Abstract: Full length of gene of flax COMT was cloned using the method of RACE. The gene was 1726 bp in length, of which, the open reading frame was 1 104 bp, encoding 367 amino acid residues and having a molecular weight of 40 kD, with a 5' non-coding region of 423 bp and a 3' non-coding region of 199 bp. The gene was submitted to GenBank with a number of KC8328645. The coding protein was with pI of 5.7, in secondary structure of protein of which, random coil and α-helix were abundant category. Phylogenetic tree based on COMT genes submitted to GenBank of different plant showed that flax clustered together with Eucalyptus camaldulensis.

Key words: Flax, Lignin, COMT gene, RACE, Bioinformatics analysis