Response of a Mu-class glutathione S-transferase from black tiger shrimp Penaeus monodon to aflatoxin B1 exposure

文献类型： 外文期刊

第一作者： Wang, Yun

作者： Wang, Yun;Huang, Jianhua;Duan, Yafei;Wang, Jun;Fu, Mingjun;Lin, Heizhao;Liu, Lihui

作者机构：

关键词： Penaeus monodon;Mu-class glutathione S-transferase;Aflatoxin B1 exposure;cDNA cloning

期刊名称：SPRINGERPLUS （ 影响因子：1.13； 五年影响因子：1.29 ）

ISSN： 2193-1801

年卷期： 2016 年 5 卷

页码：

收录情况： SCI

摘要： Glutathione S-transferases (GSTs) are a family of multifunctional phase II enzymes that are involved in the detoxification of exogenous and endogenous compounds. In this study, a full-length cDNA of Mu-class GST (PmMuGST) was isolated from the hepatopancreas of Penaeus monodon using rapid amplification of cDNA ends method. The full length cDNA of PmMuGST is 867 bp, contains an open read frame of 660 bp, and encodes a polypeptide of 219 amino acids with a molecular mass of 25.61 kDa and pI of 6.15. Sequence analysis indicated that the predicted protein sequence of PmMuGST was very similar to (86 %) that of Litopenaeus vannamei. A conserved domain of GST_N_Mu_like (PSSM: cd03075) and GST_C_family_superfamily_like (PSSM: cl02776) was indentified in PmMuGST. Real time quantitative RT-PCR analysis indicated that PmMuGST was present in all of the tested tissues. PmMuGST transcripts both in the hepatopancreas and in the muscle were significantly induced after 14 days of treatment with a low dosage of AFB1 (50 mu g/kg) exposure and were significantly inhibited after 42 and 56 days of a high dosage of AFB1 (1000, 2500 mu g/kg AFB1) exposure. Taken together, the Mu-class GST from P. monodon was inducible and was involved in the response to AFB1 exposure.

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