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

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Abstract

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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Acknowledgments

This study was supported by National nature foundation of China (No.30571447), National “863” Project of China (No. 2003 AA603120 ) and Agriculture Department Project of China(06–05-01B).

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Authors and Affiliations

  1. Biotechnology and Aquiculture Laboratory, The South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 231 Xingangxi Road, Guangzhou, 510300, P.R. China

    Lihua Qiu, Shigui Jiang, Falin Zhou, Dianchang Zhang, Jianhua Huang & Yihui Guo

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  1. Lihua Qiu
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  2. Shigui Jiang
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  3. Falin Zhou
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  4. Dianchang Zhang
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  5. Jianhua Huang
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  6. Yihui Guo
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Correspondence to Shigui Jiang.

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Qiu, L., Jiang, S., Zhou, F. et al. Molecular cloning of the black tiger shrimp (Penaeus monodon) elongation factor 2 (EF-2): sequence analysis and its expression on the ovarian maturation stage. Mol Biol Rep 35, 431–438 (2008). https://doi.org/10.1007/s11033-007-9103-5

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  • DOI: https://doi.org/10.1007/s11033-007-9103-5

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