Fig. 3

Similarity analysis of the nucleotide sequence of nine PDCoV full-length representative viruses. a Scheme of the ORF regions contained in the PDCoV full-length genome sequences: ORF1a/b, Spike ORF, envelope protein ORF, membrane protein ORF, NS6 ORF, nucleocapsid protein ORF and NS7 ORF from the 5′ terminus to the 3′ terminus of the genome. E, envelope protein ORF; M, membrane protein ORF; N, nucleocapsid protein ORF; NS6, NS6 protein ORF; NS7, NS7 protein ORF. b Similarity map of nine PDCoVs representing each subgenogroup with AH2019-H from GI-a (GenBank ID: MN520198.1) as a query strain using SimPlot ver. 3.5.1 software. Each different color line represents a PDCoV isolate. The horizontal axis represents the position of nucleotide sequences, and the vertical axis represents the nucleotide similarity percentage. The nucleotide position (nt) is relative to the strain CHN-GX81–2018 (GenBank ID: MN173781.1)