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Genetic evolution and codon usage analysis of NKX-2.5 gene governing heart development in some mammals

机译:一些哺乳动物NKX-2.5基因治疗心脏发育的遗传演化与密码子使用分析

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NKX-2.5 gene is responsible for cardiac development and its targeted disruption apprehends cardiac development at the linear heart tube stage. Bioinformatic analysis was employed to investigate the codon usage pattern and dN/dS of mammalian NKX-2.5 gene. The relative synonymous codon usage analysis revealed variation in codon usage and two synonymous codons namely ATA (Ile) and GTA (Val) were absent in NKX-2.5 gene across selected mammalian species suggesting that these two codons were possibly selected against during evolution. Parity rule 2 analysis of two and four fold amino acids showed CT bias whereas six-fold amino acids revealed GA bias. Neutrality analysis suggests that selection played a prominent role while mutation had a minor role. The dN/dS analysis suggests synonymous substitution played a significant role and it negatively correlated with p-distance of the gene. Purifying natural selection played a dominant role in the genetic evolution of NKX-2.5 gene in mammals.
机译:NKX-2.5基因负责心脏发育,其目标中断在线性心脏管阶段考虑心脏发育。使用生物信息分析来研究哺乳动物NKX-2.5基因的密码子使用模式和DN / DS。相对同义密码子使用分析显示了密码子使用的变化和两个同义密码子,即ATA(ILE)和GTA(VAL)横跨选定的哺乳动物物种中的NKX-2.5基因不存在,表明这两根密码子可能选择在进化期间。奇偶校长2分析两种和四个折叠氨基酸,显示CT偏置,而六倍的氨基酸揭示了GA偏差。中立分析表明,选择在突变具有轻微作用时发挥着突出的作用。 DN / DS分析表明同义替代发挥了重要作用,并且与基因的P距离负相关。纯化自然选择在哺乳动物NKX-2.5基因的遗传演化中发挥了显着作用。

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