Schematic presentation of the structural region of Ark DPI genome. Entire genome of Ark DPI was analyzed for its similarity with other IBV strains. Top panel: 5'UTR & ORF1. Shadowed regions were used for comparative analysis. 5'UTR-5'-untranslated region; PL1-papain like proteinase1; Mpro-main or 3C-like proteinase; RdRp-RNA-dependent-RNA polymerase. Bottom panel: ORF2 to 3'UTR. Structural genes and their ORFs are marked by (●). Conserved sequence TGTGTTGATTATAAT in S1 gene is shown; ◆ denotes plausible recombination site in Ark DPI.