北方农业学报 ›› 2020, Vol. 48 ›› Issue (3): 32-38.doi: 10.12190/j.issn.2096-1197.2020.03.05

• 种质资源·分子生物学 • 上一篇    下一篇

沙拐枣甜菜碱醛脱氢酶基因的克隆与生物信息学分析

房永雨1,2, 郝丽芬1, 聂利珍1,2, 丁海君1,2, 王力伟1, 赵小庆1, 孙杰1,2, 史志丹1, 何江峰1   

  1. 1.内蒙古自治区农牧业科学院,内蒙古 呼和浩特 010031;
    2.内蒙古自治区植物蛋白质组学重点实验室, 内蒙古 呼和浩特 010031
  • 收稿日期:2020-04-24 出版日期:2020-06-20 发布日期:2020-08-14
  • 通讯作者: 何江峰(1979—),女,副研究员,博士,主要从事分子遗传学方面的研究工作。
  • 作者简介:房永雨(1984—),男,助理研究员,博士,主要从事牧草育种与分子生物学的研究工作。
  • 基金资助:
    内蒙古自治区农牧业科学院青年创新基金项目(2019QNJJM02)

Cloning and bioinformatics analysis of CmBADH gene of Calligonum mongolicum

FANG Yongyu1,2, HAO Lifen1, NIE Lizhen1,2, DING Haijun1,2, WANG Liwei1, ZHAO Xiaoqing1, SUN Jie1,2, SHI Zhidan1, HE Jiangfeng1   

  1. 1. Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China;
    2. Inner Mongolia Key Laboratory of Plant Proteomics,Hohhot 010031,China
  • Received:2020-04-24 Online:2020-06-20 Published:2020-08-14

摘要: 【目的】揭示抗逆植物沙拐枣甜菜碱醛脱氢酶(CmBADH)的基因序列。【方法】利用RACE技术克隆CmBADH基因的全长序列,并对其基因序列和蛋白序列进行生物信息学分析。【结果】CmBADH基因的cDNA全长1 863 bp,开放阅读框(ORF)全长1 506 bp,编码501 个氨基酸。通过Blastn比对,发现CmBADH 与海马齿(Sesuvium portulacastrum)、山谷栎(Quercus lobata)、盐爪爪(Kalidium foliatum)的BADH 相似性分别达到80.04%、79.97%、79.55%。其相对分子量为123.46 kDa,等电点(pI)5.01,蛋白序列共有16个磷酸化位点;不含有跨膜结构域;不含有信号肽位点;含有一个甜菜碱醛脱氢酶结构域(PLN02467)。二级结构显示α螺旋占43.31%,无规则卷曲占31.94%,延伸链占17.37%,β转角占7.38%。三级结构模型为椭球形。【结论】沙拐枣CmBADH基因序列的确定,为今后研究沙拐枣CmBADH 基因的抗逆功能提供研究基础。

关键词: 沙拐枣, CmBADH基因, RACE克隆, 生物信息学分析

Abstract: 【Objective】To reveal the gene sequence of betaine aldehyde dehydrogenase (CmBADH) in the antistress plant Calligonum mongolicum.【Methods】RACE technology was used to clone the full-length sequence of CmBADH gene and conduct bioinformatics analysis of its gene and protein sequences.【Results】The cDNA sequence of CmBADH gene was 1 863 bp,and the ORF was 1 506 bp,encoding 501 amino acids.Blastn showed that the BADH similarity between CmBADH and Sesuvium portulacastrum,Quercus lobata,and Kalidium foliatum reached 80.04%,79.97%,and 79.55%,respectively.Its relative molecular weight was 123.46 kDa,isoelectric point (pI) 5.01,and the protein sequence had 16 phosphorylation sites.No transmembrane domain;no signal peptide sites;contains a betaine aldehyde dehydrogenase domain (PLN02467).The secondary structure showed that alpha helix accounts for 43.31%,random coil 31.94%,extended strand 17.37% and beta turn 7.38%.The model of tertiary structure is ellipsoid.【Conclusion】The determination of CmBADH gene sequence provides a basis for future studies on the antistress function of CmBADH gene in Calligonum mongolicum.

Key words: Calligonum mongolicum, CmBADH gene, RACE cloning, Bioinformatics analysis

中图分类号: 

  • S718.5