FIG. 4.
The pVP2-specific domain of different birnavirus polyproteins. A sequence alignment with the IBDV, IPNV, and DXV pVP2-specific domains is shown. The alignment is anchored to the multiple cleavage sites identified on BSNV and IBDV or proposed for IPNV and DXV (shown as DrXV) (12). Residues conserved in the four sequences are indicated at the consensus sequence line (Cons).