Figure 3.

Partial nucleotide sequences of the P3 cistron of the infectious cDNA clones of Soybean mosaic virus strains N, G7 and G7d harbouring codons expressing amino acids of P3 and the overlapping pipo‐encoded protein. The square brackets above and below the nucleotide sequences show the codons encoding P3 and the unique PIPO amino acids, respectively. The unique nucleotide of each strain not shared with the others is highlighted. It should be noted that the genomic positions of pipo of G7 and G7d differ from that of N because of the presence of one additional codon upstream of the P3 cistron (GenBank accession numbers AY216010, AY216987 and D00507, respectively).