Cloning and organisation analysis of a hepcidin-like gene and cDNA from Japan sea bass, Lateolabrax japonicus

Fish & Shellfish Immunology
Hong-Lin RenMing Yang

Abstract

A hepcidin gene was amplified from the liver of Lateolabrax japonicus challenged with a mixed bacterial suspension. Using RT-PCR and RACE, a full length cDNA sequence of the hepcidin like antimicrobial peptide was determined. The complete hepcidin cDNA Hepc2 is 581 bases and contains an ORF of 258 bases with a coding capacity of 86 amino acids. The deduced amino acid sequence, which shares eight cysteines at the identical conserved positions, and gene organisation are conserved between Japan sea bass and other fish species. The predicted molecular weight of the peptide is 9.4 kDa. The 3'-untranslated region is composed of 225 bp with a polyadenylation signal AATAAA sequence appearing at 189 nt and the poly(A) tail at 212 nt downstream of stop codon TGA. The predicted signal peptide cleavage site of its deduced peptide is between codons 24 and 25. Japan sea bass hepcidin-like genomic DNA hepc2 sequence including upstream and downstream regions was composed of two introns and three exons. The cloned 173-bp upstream sequence of Japan sea bass hepcidin-like gene contains putative regulatory elements and several binding motifs for transcription factors. High homologies with hepcidin cDNAs and peptides of white bass (Morone chrysops)...Continue Reading

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Citations

Mar 4, 2008·Molecular Biology and Evolution·Qianghua XuLiangbiao Chen
Mar 7, 2014·Pharmaceuticals·Jorge A Masso-Silva, Gill Diamond
Apr 17, 2012·Developmental and Comparative Immunology·Lv-yun ZhuJian-zhong Shao
May 6, 2014·Fish & Shellfish Immunology·Claudio A AlvarezLuis Mercado

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