Protein-coding variations unique to the virulent strain PRV Becker, in comparison to strains PRV Bartha and Kaplan.

aProteins are listed in order of occurrence along the genome (see Figure 3 for full list and functions).
bSingle AA residues changes are written in standard format, including the Kaplan reference strain AA, its position, and the AA residue found in the PRV Becker protein sequence, e.g. S100P. Insertions are indicated by the AA position in Kaplan followed by “+” and the new AAs, e.g. 100(+RR). Deletions are indicated by the symbol Δ. Sequential changes are combined and shown with the Kaplan strain AA positions first, followed by the relevant Kaplan AA residues, then “>”, and finally the new alternative AA residues, e.g. 100–102(RAR>EDA).