Analysis of codon usage pattern of infectious laryngotracheitis virus immunogenic glycoproteins and its biological
1Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam Pin-781039, India.
Abstract:
Infectious laryngotracheitis virus (ILTV) is a highly contagious acute respiratory poultry pathogen. Modified live ILTV vaccines are the only control against ILT infections. Reversions and establishment of latent infections are the major concerns imparting the need to develop safer vaccines against ILTV infection. ILTV glycoprotein B and D (gB and gD) are major protective immunogens. The factors shaping synonymous codon usage bias and nucleotide composition in ILTV glycoprotein genes have not yet been reported. In the present study, we have analyzed the synonymous codon usage indices of ILTV gB and gD genes. Variation in the codon usage was seen in both the glycoproteins majorly by mutational pressure. The pattern was determined using the correspondence analysis, effective number of codon (Nc), GC3 plot and correlation analyses among different indices. The study is a comprehensive analysis of the codon usage patterns of ILTV glycoprotein genes. This will be helpful in understanding the codon usage bias of ILTV and related DNA viruses which could further explore its biology.
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