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Polygenic expression of somatostatin in orange-spotted grouper (Epinephelus coioides): Molecular cloning and distribution of the mRNAs encoding three somatostatin precursors

文献类型: 外文期刊

作者: Ying, Y 1 ; Li, WS 2 ; Lin, HR 2 ;

作者机构: 1.Zhongshan Univ, Inst Aquat Econ Anim, Guangzhou 510275, Peoples R China

2.Zhongshan Univ, Inst Aquat Econ Anim, Guangzhou 510275, Peoples R China; Zhongshan Univ, Guangdong Prov Key Lab Aquat Econ Anim, Guangzhou 510275, Peoples R China; CAFS, Pearl River Fisheries Res Inst, Guangzhou 510380, Peoples R China; CAFS, Key Lab Trop & Subtrop Fish Breeding & Cultivat, Guangzhou 510380, Peoples R China

关键词: Epinephelus coioides;preprosomatostatin;cDNA cloning;mRNA distribution pattern

期刊名称:MOLECULAR AND CELLULAR ENDOCRINOLOGY ( 影响因子:4.102; 五年影响因子:4.226 )

ISSN: 0303-7207

年卷期: 2005 年 241 卷 1-2 期

页码:

收录情况: SCI

摘要: In the present study, three preprosomatostatin (PSS) cDNAs were characterized from hypothalamus of orange-spotted grouper Epinephelus coioides. The first cDNA encodes a 123-amino acid protein (PSSI) that contains the SS14 sequence at its C-terminal extremity and that is identical to that of PSSI of human and other vertebrates. The second cDNA encodes a 127-amino acid protein (PSSII) that contains the SS28 sequence with [Tyr(7), Gly(10)]-SS14 at its C-terminus. The third cDNA encodes a 110-amino acid protein (PSSIII) that contains the somatostatin variant [Pro(2)]-SS14 at its C-terminal extremity. All these three PSS mRNAs were expressed in brain and pituitary with different mRNA levels. In peripheral tissues, PSSII was more widely distributed than PSSI and PSSIII. High mRNA levels of PSS were found in stomach, intestine and ovary. PSS mRNAs were detected throughout embryogeny and early larval development. Its levels increased with the embryonic development and maintained a higher level during larva developing. The mRNA distribution suggests that the three grouper PSS products play important physiological functions in adult fish as well as in cell growth and organ differentiation in embryo and larva development. (C) 2005 Elsevier Ireland Ltd. All rights reserved.

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