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Bioinformatic analysis based on the complete coding region of the MSTN gene within and among different species

机译:基于不同物种内和物种间MSTN基因完整编码区的生物信息学分析

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Myostatin, encoded by the MSTN gene (previously GDF8), is a member of the transforming growth factor-β superfamily, which normally acts to limit skeletal muscle mass by regulating the number and growth of muscle fibers. In this study, a total of 84 myostatin gene sequences with known complete coding regions (CDS) and corresponding amino acid sequences were analyzed from 17 species, and differentiation within and among species was studied using comparative genomics and bioinformatics. Characteristics of the nucleotide and amino acid sequences were also predicted. The results indicated that a total of 569 polymorphic sites, including 53 singleton variable sites and 516 parsimony informative sites, which could be sorted into 44 haplotypes, were detected from 17 species. Observed genetic diversity was higher among species than within species, and Vulpes lagopus was more polymorphic than other species. There was clear differentiation of the myostatin gene among species and the reconstructed phylogenetic tree was consistent with the NCBI taxonomy. The myostatin gene was 375-aa long in most species, except for Mus musculus (376 aa) and Danio rerio (373 aa). The amino acid sequences of myostatin were deemed hydrophilic, and had theoretical pI values of Ovis aries myostatin gene was 150-220 bp upstream of the start codon.
机译:由MSTN基因(以前为GDF8)编码的肌生长抑制素是转化生长因子β超家族的成员,该家族通常通过调节肌肉纤维的数量和生长来限制骨骼肌质量。在这项研究中,从17个物种中分析了总共84个具有已知完整编码区(CDS)的肌肉生长抑制素基因序列和相应的氨基酸序列,并使用比较基因组学和生物信息学研究了物种内部和物种之间的分化。还预测了核苷酸和氨基酸序列的特征。结果表明,从17个物种中共检测到569个多态性位点,其中包括53个单态可变位点和516个简约信息位点,可分为44个单倍型。物种间观察到的遗传多样性高于物种内,而狐狸比其他物种更具多态性。肌肉生长抑制素基因在物种之间有明显的分化,并且重建的系统发育树与NCBI分类法一致。除小家鼠(376 aa)和达尼奥里奥(373 aa)外,大多数物种的myostatin基因长375-aa。肌生长抑制素的氨基酸序列被认为是亲水的,并且Ovisaries肌生长抑制素基因的理论pI值为起始密码子上游150-220bp。

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