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植物研究 ›› 2007, Vol. 27 ›› Issue (2): 212-217.doi: 10.7525/j.issn.1673-5102.2007.02.019

• 论文 • 上一篇    下一篇

西伯利亚蓼rd22基因的克隆与序列分析

郑 磊;刘关君;杨传平*   

  1. 东北林业大学林木遗传育种省级重点实验室,哈尔滨 150040
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-03-20 发布日期:2007-03-20
  • 通讯作者: 杨传平
  • 基金资助:
     

Cloning and Sequence Analysis of rd22 Gene from Polygonum sibricum

ZHENG Lei;LIU Guan-Jun;YANG Chuan-Ping*   

  1. Key Laboratory of Forest Genetics and Tree Breeding of Heilongjiang Province,Northeast Forestry University, Harbin 150040
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-03-20 Published:2007-03-20
  • Contact: YANG Chuan-Ping
  • Supported by:
     

摘要: 以3% NaHCO3溶液胁迫处理48 h的西伯利亚蓼为试材,利用RACE技术,从其茎部组织克隆了脱水应答蛋白RD22的全长cDNA序列。测序后的结果分析表明,该cDNA序列全长为1 302 bp,5′非翻译区为59 bp,3′非翻译区为25 bp,开放读码框为1 218 bp,编码405个氨基酸。在氨基酸序列的C端含有一个比较保守的BURP结构域,N端含有5个重复序列THV-VGKGGV-V。信号肽检测证明该蛋白为分泌性蛋白,前21个氨基酸区域为信号肽结构。其推演的氨基酸序列与葡萄的同源性最高,达到60%。该基因已在GenBank上注册,基因序列登录号为DQ836050。

关键词: 西伯利亚蓼, rd22基因, 克隆, 序列分析

Abstract: Using RACE (rapid amplification of cDNA ends) method, the full-length cDNA of dehydration-responsive protein RD22 was cloned from Polygonum sibricum treated with 3%NaHCO3 solution for 48. The sequence analysis shows that the rd22 gene is 1 302 bp in length, including 59 bp of 5′untranslated region, 25 bp of 3′untranslated region and 1 218 bp of open reading frame (ORF).The rd22 gene encodes a protein of 405 amino acids. The C-terminal of the RD22 protein contains a conserved BURP domain, and the N-terminal contains 5 copies of a repetitive sequence of THV-VGKGGV-V. Signal peptide prediction shows the RD22 protein is a secretory protein, and has a signal peptide structure at the first 21 amino acids region. The amino acid sequence of RD22 prutein from Polygonum sibricum has a high homology with grape of 60%. This rd22 gene has been accepted by GenBank, and the accession number of gene sequence is DQ836050.

Key words: Polygonum sibricum, rd22 gene, cloning, sequence analysis

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