Table 3.
Comparison of amino acid homologies
| Number of nt or aa residues (% homology) | ||||
|---|---|---|---|---|
| 3′-NTR | 3Dpol | 3A–3Cpro | Partial 2Cb | |
| CHK1 | 309 | 477 | 302 | 177 |
| CHK168 | 310 | 478 (84) | NA | NA |
| TRK24 | 311 | 477 (80) | NA | NA |
| Aichi virus | 240 | 468 (54) | 311 (21) | 140 (35) |
| Bovine kobuvirus | 177 | 469 (55) | 316 23) | 140 (35) |
| Procine kobuvirus | 170 | 468 (55) | 316 (25) | 173 (24) |
| Turdivirus 1 | 320 | 475 (64) | 326 (28) | 154 (41) |
| Turdivirus 2 | 224 | 470 (49) | 314 (19) | 134 (36) |
| Turdivirus 3 | 242 | 470 (47) | 307 (20) | 134 (38) |
| Human salivirus | 151 | 474 (47) | 301 (24) | 148 (29) |
| Human klassevirus | 161 | 473 (46) | 301 (23) | 148 (29) |
| THV 0091a | 137 | 472 (35) | 379 (15) | 174 (24) |
| THV 2993D | 172 | 472 (35) | 379 (15) | 173 (24) |
| CHK148 | 641 | 472 (36) | NA | NA |
| TRK22 | 654 | 472 (35) | NA | NA |
The 3′-NTRs of CHK165, CHK175, TRK90, and TRK91 strains are 310, 308, 314, and 312 nt long, respectively. The 3′-NTR of CHK178 is 641 nt long
aComplete 3′-NTRs of turkey hepatitis viruses were not available
bLength of partial 2Cs represent compatible regions to the 177 nt partial 2C of CHK1 starting from the deduced 2C/3A cleavage sites