Table 2. Pairwise amino acid identity in the P1, P2, and P3 regions between ferret kobuvirus 38 (MpKoV38; KF006985) and bovine kobuvirus (BKoV; AB084788), human aichivirus (AIV; FJ890523), porcine kobuvirus (PKoV; GU292559), and klassevirus (Klasse; GQ184145).
| Region and virus | BKoV | AIV | PKoV | Klasse |
| P1 | ||||
| MpKoV38 | 80.8 | 52.1 | 63.2 | 41.7 |
| BKoV | 52.2 | 63.1 | 41.7 | |
| AIV | 56.2 | 44.2 | ||
| PKoV | 41.9 | |||
| P2 | ||||
| MpKoV38 | 83.3 | 62.7 | 70.4 | 36.0 |
| BKoV | 62.4 | 72.0 | 35.5 | |
| AIV | 63.7 | 34.2 | ||
| PKoV | 35.4 | |||
| P3 | ||||
| MpKoV38 | 89.5 | 63.8 | 72.3 | 42.8 |
| BKoV | 64.5 | 74.0 | 42.5 | |
| AIV | 66.0 | 45.0 | ||
| PKoV | 43.3 | |||