Fig. 5

Linear B cell epitope distribution map of the predicted PDCoV S glycoprotein. A Domain structure of PDCoV S glycoprotein, including S1 domain (aa51–419), S2 domain (aa569–1081), and transmembrane domain (TM, aa1099–1121). B Predicted linear B cell epitopes in the S glycoprotein of representative strain AH2019-H in the GI and CHN-GX81–2018 in the GII using the BepiPred-2.0 server. The horizontal axis represents the corresponding position of the S glycoprotein amino acid sequence, and the vertical axis represents the residue scores. The potential epitopes are residue scores above the threshold of 0.5 and are represented by yellow color. Regions with large epitope differences between the two representative strains are boxed in red