Preference of A/T ending codons in mitochondrial ATP6 gene under phylum Platyhelminthes: Codon usage of ATP6 gene in Platyhelminthes

Molecular and Biochemical Parasitology
Gulshana Akthar MazumderSupriyo Chakraborty

Abstract

Unequal usage of synonymous codons in the gene transcript for an amino acid is known as codon usage bias (CUB). It is a unique property of gene as well as genome. Mutation and natural selection are known to be the major factors that influence CUB. Other factors encompass gene expression level, GC content, codon position, recombination rate, RNA stability and gene length. CUB analysis helps in in-depth understanding of the molecular biology, genetics and genome evolution in a species. We used bioinformatic methods to explore the pattern of CUB in MT-ATP6 gene in different classes of platyhelminthes. The analysis is based on genetic code of translational table 14 of National Center of Biotechnology Information (NCBI) where the codon AAA codes for asparagine and TAA for tyrosine amino acid. The synonymous codon usage order (SCUO), an index of CUB, values in different classes namely cestoda, monogenea, rabditophora, trematoda and turbellaria of platyhelminths were found to be 0.43, 0.32, 0.49, 0.40 and 0.36, respectively which suggest that the codon usage bias of ATP6 gene was low (SCUO < 0.50). Highly significant correlation (p < 0.001) was found between SCUO and various GC contents indicating that GC composition had an influence ...Continue Reading

Citations

Feb 10, 2020·Archives of Virology·Bornali DebSupriyo Chakraborty
Jun 26, 2021·Virology·Bornali DebSupriyo Chakraborty

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