斑节对虾细胞周期蛋白T基因的克隆和表达分析

真核生物的转录调控多发生在转录的延伸阶段,细胞周期蛋白T(cyclin T)是细胞转录的重要调控因子。文章利用RACE技术获得斑节对虾(Penaeus monodon)cyclin T(Pmcyclin T)c DNA全长,其全长为3 421 bp,其中开放阅读框(ORF)3 135 bp,编码1 044个氨基酸;生物信息学分析显示,该氨基酸序列含有一个周期蛋白家族特有的CYCLIN保守区,并含有N-糖基化位点和磷酸化位点;经BLAST同源性分析显示,细胞周期蛋白T编码的蛋白与柑橘木虱(Diaphorina citri)、切叶蚁(Acromyrmex echinatior)等多种节肢动物有很高...

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Published in南方水产科学 Vol. 12; no. 1; pp. 59 - 66
Main Author 郭松 傅明骏 赵超 李伟杰 江世贵 杨其彬 周发林 邱丽华
Format Journal Article
LanguageChinese
Published 中国水产科学研究院南海水产研究所,农业部南海渔业资源开发利用重点实验室,广东 广州 510300 2016
上海海洋大学水产与生命学院,上海 201306%中国水产科学研究院南海水产研究所,农业部南海渔业资源开发利用重点实验室,广东 广州 510300%中国水产科学研究院南海水产研究所热带水产研究开发中心,海南 三亚,572018
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ISSN2095-0780
DOI10.3969/j.issn.2095-0780.2016.01.009

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Summary:真核生物的转录调控多发生在转录的延伸阶段,细胞周期蛋白T(cyclin T)是细胞转录的重要调控因子。文章利用RACE技术获得斑节对虾(Penaeus monodon)cyclin T(Pmcyclin T)c DNA全长,其全长为3 421 bp,其中开放阅读框(ORF)3 135 bp,编码1 044个氨基酸;生物信息学分析显示,该氨基酸序列含有一个周期蛋白家族特有的CYCLIN保守区,并含有N-糖基化位点和磷酸化位点;经BLAST同源性分析显示,细胞周期蛋白T编码的蛋白与柑橘木虱(Diaphorina citri)、切叶蚁(Acromyrmex echinatior)等多种节肢动物有很高的同源性;利用qRTPCR技术对Pmcyclin T在不同组织及卵巢发育各时期的mRNA水平的表达谱进行了研究。结果表明,细胞周期蛋白T在斑节对虾的心、卵巢等7个组织中均有表达,其中卵巢中表达量显著高于其他组织(P〈0.05);在卵巢发育各时期中,细胞周期蛋白T在Ⅲ期表达量最高。
Bibliography:Penaeus monodon; cyclin T; gene clone; express analysis; ovary development
Cyclin T is a critical factor that stimulates the process of transcription elongation. We obtained the full-length c DNA sequence of cyclin T from black tiger shrimps( Penaeus monodon)( denoted as Pmcyclin T) by RACE PCR. The c DNA of Pmcyclin T was 3 421 bp,encoding a polypeptide of 1 044 amino acids. Bioinformatics analysis shows that the amino acid sequence contained a CYCLIN conserved region of a periodic protein family as well as N-glycosylation sites and phosphorylation sites. The results of Blast and phylogenetic analyses suggest that Pmcyclin T shared very high homology with other kinds of arthropod such asDiaphorina citri,Acromyrmex echinatior and so on. Besides,we measured the mRNA expression of Pmcyclin T in seven tissues by real-time PCR. Expression was highest in the ovary and moderate in the intestine,brain and so on. While at different stages of ovary,Pmcyclin T was highest expressed at Stage Ⅲ,suggesting that Pmcyclin T
ISSN:2095-0780
DOI:10.3969/j.issn.2095-0780.2016.01.009