Compositional properties and codon usage pattern of mitochondrial cytochrome c oxidase I gene among potamidids

Codon usage bias (CUB) refers to an unequal occurrence of specific synonymous codons in a genome with variations within and among species. Findings suggest that CUB is significant interpreting evolutionary trends species and/or genes. However, information remained unclear for organisms the family Potamididae. This study examined compositional features codon patterns coI gene potamidids identify factors shaping CUB. Quantification identification causative were performed by assessing nucleotide composition, effective number (ENC), relative (RSCU), parity rule (PR2) analysis neutrality plot as well correspondence (CoA). Results from suggested natural selection dominant factor different genera potamidids. In contrast, CoA, PR2 ENC analyses indicated existence mutational pressure minor contribution. Nucleotide composition investigations most are AT rich; T nucleotides count being highly presented. Thus, restraint was also reasons behind pattern Although, present involved one mitochondrial gene, coI, findings have demonstrated various differentially adapted environment, may be expressed remain elucidated.