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Primary structure of a novel gonadotropin-releasing hormone (GnRH) in the ovary of red swamp crayfish Procambarus clarkii

文献类型： 外文期刊

作者： Guan, Zheng-Bing 1 ; Shui, Yan 2 ; Liao, Xiang-Ru 1 ; Xu, Zeng-Hong 2 ; Zhou, Xin 2 ;

作者机构： 1.Jiangnan Univ, Minist Educ, Key Lab Ind Biotechnol, Wuxi 214122, Peoples R China

2.Chinese Acad Fishery Sci, Key Lab Freshwater Fisheries & Germplasm Resource, Minist Agr, Freshwater Fisheries Res Ctr, Wuxi 214081, Peoples R China

3.Nanjing Agr Univ, Wuxi Fishery Coll, Wuxi 214081, Peoples R China

关键词： Gonadotropin-releasing hormone;Procambarus clarkii;Ovary;Reverse-phase HPLC;Ovarian maturation

期刊名称：AQUACULTURE （ 影响因子：4.242； 五年影响因子：4.723 ）

ISSN： 0044-8486

年卷期： 2014 年 418 卷

页码：

收录情况： SCI

摘要： Gonadotropin-releasing hormone (GnRH) is a neuropeptide known to regulate and maintain reproductive functions and conserved in both vertebrate and invertebrate species. In this study, a GnRH peptide was isolated from the ovaries of red swamp crayfish, Procambarus clarkii, by using chromatographic and immunological methods. The form was proven to be a novel form of GnRH by determining its primary structure by chemical sequencing and mass spectrometry, and was designated as P. clarkii GnRH (pcGnRH). The primary structure of pcGnRH is pQSYHFSLGWKP-NH2, which is different from the known forms of the vertebrate and invertebrate GnRH family. Synthetic pcGnRH was biologically active, as it showed stimulative effects on ovarian maturation to crayfish. Our data supported the hypothesis that in crustacean there is GnRH synthesized locally in the ovary and playing an important role in the regulation of oocyte development. This is the first report on the isolation and characterization of GnRH-like peptide in crustacean. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.

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