Figure 1.

An alignment of Rep sequences from Banana bunchy top nanovirus Taiwanese isolate DNA1 (BBTV-T1), Coconut foliar decay nanovirus (CFDV), PCV type 1, and BFDV, together with the 2C-protein conserved region sequences from Norwalk calicivirus (NV) and the Feline calicivirus (FCV). The region in which the recombination probably occurred is marked with a solid-line box. Identities between the N-terminal sequences of circovirus and nanovirus Reps are marked with gray blocks, and those between calicivirus 2C-proteins and the C-terminal sequences of circovirus Reps are marked with black blocks. P-loop sequences are marked with dashed-line boxes.