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    Fibroblast growth factors (FGFs) are a large family of polypeptide growth factors, which are found in organisms ranging from nematodes to humans. In vertebrates, a number of FGFs have been shown to play important roles in developing embryos and adult organisms. Among the vertebrate species, FGFs are highly conserved in both gene structure and amino-acid sequence. However, studies on teleost FGFs are mainly limited to model species, hence we investigated FGFs in the common carp genome. We identified 35 FGFs in the common carp genome. Phylogenetic analysis revealed that most of the FGFs are highly conserved, though recent gene duplication and gene losses do exist. By examining the copy number of FGFs in several vertebrate genomes, we found that eight FGFs in common carp have undergone gene duplications, including FGF6a, FGF6b, FGF7, FGF8b, FGF10a, FGF11b, FGF13a, and FGF18b. The expression patterns of all FGFs were examined in various tissues, including the blood, brain, gill, heart, intestine, muscle, skin, spleen and kidney, showing that most of the FGFs were ubiquitously expressed, indicating their critical role in common carp. To some extent, examination of gene families with detailed phylogenetic or orthology analysis verified the authenticity and accuracy of assembly and annotation of the recently published common carp whole genome sequences. Gene families are also considered as a unique source for evolutionary studies. Moreover, the whole set of common carp FGF gene family provides an important genomic resource for future biochemical, physiological, and phylogenetic studies on FGFs in teleosts. Copyright © 2015 Elsevier B.V. All rights reserved.


    Likun Jiang, Songhao Zhang, Chuanju Dong, Baohua Chen, Jingyan Feng, Wenzhu Peng, Shahid Mahboob, Khalid A Al-Ghanim, Peng Xu. Genome-wide identification, phylogeny, and expression of fibroblast growth genes in common carp. Gene. 2016 Mar 10;578(2):225-31

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    PMID: 26691502

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