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Publication Details
Year :

2014

Journal :

Hoda Mirsafian, Adiratna Mat Ripen, Aarti Singh, Phaik Hwan Teo, Amir Feisal Merican and Saharuddin Bin Mohamad (2014). A Comparative Analysis of Synonymous Codon Usage Bias Pattern in Human Albumin Superfamily. The Scientific World Journal Volume 2014, Articles ID 639682, 7 pages

Abstract :

Synonymous codon usage bias is an inevitable phenomenon in organismic taxa across the three domains of life. Though the frequency of codon usage is not equal across species and within genome in the same species, the phenomenon is non random and is tissue-specific. Several factors such as GC content, nucleotide distribution, protein hydropathy, protein secondary structure, and translational selection are reported to contribute to codon usage preference. The synonymous codon usage patterns can be helpful in revealing the expression pattern of genes as well as the evolutionary relationship between the sequences. In this study, synonymous codon usage bias patterns were determined for the evolutionarily close proteins of albumin superfamily, namely, albumin, α-fetoprotein, afamin, and vitamin D-binding protein. Our study demonstrated that the genes of the four albumin superfamily members have low GC content and high values of effective number of codons (ENC) suggesting high expressivity of these genes and less bias in codon usage preferences. This study also provided evidence that the albumin superfamily members are not subjected to mutational selection pressure.

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