Table 2. Analysis of relationships among the protein sequences of PARV4-like viruses*†.
| Sequence | PARV4-p | PHoV | BHoV | PARV4-g1 | PARV4-g2 | PARV4-g3 |
|---|---|---|---|---|---|---|
| PARV4-p | ||||||
| NS | 99–100 | (99) | (80) | (68) | (68) | (68) |
| VP | 99–100 | (99) | (79) | (77) | (78) | (77) |
| SAT |
100 |
|
|
|
|
|
| PHoV | ||||||
| NS | 97–98 | 98–99 | (79) | (68) | (68) | (68) |
| VP | 99 | 99 | (79) | (77) | (77) | (77) |
| SAT |
98–100 |
98–100 |
|
|
|
|
| BHoV | ||||||
| NS | 67–68 | 67 | 99 | (70) | (70) | (70) |
| VP | 66 | 66 | NA | (78) | (78) | (78) |
| SAT |
79 |
79 |
100 |
|
|
|
| PARV4-g1 | ||||||
| NS | 53–55 | 53–54 | 56–57 | 96–99 | (99) | (98) |
| VP | 65 | 65 | 65 | 99 | (99) | (98–99) |
| SAT |
59 |
59 |
59 |
100 |
|
|
| PARV4-g2 | ||||||
| NS | 54–55 | 53–54 | 56 | 96–97 | 98–99 | (98) |
| VP | 65 | 65 | 64–65 | 98 | 98–99 | (98) |
| SAT |
59 |
59 |
59 |
100 |
100 |
|
| PARV4-g3 | ||||||
| NS | 54 | 53–54 | 56 | 96–97 | 96–97 | NA |
| VP | 65 | 65 | 64 | 98 | 97–98 | NA |
| SAT | 59 | 59 | 59 | 100 | 100 |
*PARV4, parvovirus type 4; PARV4-p, porcine PARV-4; PHoV, porcine hokovirus; BHoV, bovine hokovirus; PARV4-g1, PARV4 genotype 1; PARV4-g2, PARV4 genotype 2; PARV4-g3, PARV4 genotype 3; NS, nonstructural protein; VP, viral protein; NA, no alignment; SAT, small alternatively translated proteins. †Numbers indicate percentages of amino acid sequence identity; numbers in parentheses indicate percentages of amino acid similarity (preserved physicochemical properties). Sequence similarity was not calculated for the SAT proteins, because of their relatively smaller size. When only 1 sequence was available (e.g., VP of BHoV), no alignment was performed.