Molecular cloning of the black tiger shrimp (Penaeus monodon) elongation factor 2 (EF-2): sequence analysis and its expression on the ovarian maturation stage

文献类型： 外文期刊

第一作者： Qiu, Lihua

作者： Qiu, Lihua;Jiang, Shigui;Zhou, Falin;Zhang, Dianchang;Huang, Jianhua;Guo, Yihui

作者机构：

关键词： cloning;elongation factor 2;expression;black tiger shrimp (Penaeus monodon)

期刊名称：MOLECULAR BIOLOGY REPORTS （ 影响因子：2.316； 五年影响因子：2.357 ）

ISSN： 0301-4851

年卷期： 2008 年 35 卷 3 期

页码：

收录情况： SCI

摘要： The techniques of homology cloning and anchored PCR were used to clone the elongation factor 2 (EF-2) gene from black tiger shrimp (Penaeus monodon). The full length cDNA of black tiger shrimp EF-2 (btsEF-2) contained a 5' untranslated region (UTR) of 73 bp, an ORF of 2541 bp encoding a polypeptide of 846 amino acids with an estimated molecular mass of 95 kDa, and a 3( UTR of 112 bp. The searches for protein sequence similarities with BLAST analysis indicated that the deduced amino acid sequence of btsEF-2 was homological to the EF-2 of other species and even the mammalians. The conserved signature sequence of EF-2 gene family, GTPase effector domain and ADP-ribosylation domain were found in the btsEF-2 deduced amino acid sequence. The temporal expressions of gene in the different ovarian stages were measured by real time PCR. The mRNA expressions of the gene were constitutively expressed in ovary and different during the maturation stages. The result indicated that EF-2 gene was constitutively expressed and could play a critical role in the ovarian maturation stage.

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