Figure 4.

Multiple alignments of the three conserved domains of SsDFV2 and corresponding regions in reference members of the order Tymovirales. (a) methyltransferase; (b) helicase; (c) RdRp. Motif positions are indicated by lines above the sequences numbered from I to VI. Identical residues are indicated by asterisks, and conserved and semi-conserved amino acid residues by colons and dots, respectively. Numbers in brackets correspond to the number of amino acid residues separating the motifs. Abbreviations of virus names and sequence accession numbers are as indicated in Table 2.