Table 4.
Amino acid substitutions in the PRRSV PL97-1 strain relative to PRRSV strains RespPRRS MLV and VR-2332
| Protein | Amino acid positiona | PL97-1b | RespPRRS MLV | VR-2332 |
|---|---|---|---|---|
| ORF1a | 199 | I | I | V |
| 321 |  |
L | L | |
| 331 | S | F | S | |
| 349 | |
S | S | |
| 361 |  |
P | P | |
| 668 | F | F | S | |
| 720 | |
Y | Y | |
| 741 |  |
K | K | |
| 951 | N | N | D | |
| 1042 |  |
T | T | |
| 1090 | D | N | D | |
| 1248 |  |
Y | Y | |
| 1263 |  |
F | F | |
| 1487 | N | T | N | |
| 1498 | A | A | S | |
| 1505 |  |
K | K | |
| 1506 | A | T | A | |
| 1756 |  |
L | L | |
| 1876 |  |
I | I | |
| 2162 | L | L | P | |
| 2296 |  |
I | I | |
| ORF1b | 754 | E | E | G |
| 946 | Y | H | Y | |
| 982 | |
V | V | |
| 1036 | R | R | C | |
| 1097 | |
Y | Y | |
| 1120 | T | T | S | |
| 1175 | E | E | G | |
| 1178 | L | L | V | |
| 1211 | A | A | G | |
| ORF2a | 10 | L | F | L |
| 122 | S | S | A | |
| 128 | K | R | K | |
| 130 | V | M | V | |
| ORF2b | 9 | D | Y | D |
| ORF3 | 83 | E | E | G |
| 94 | |
I | I | |
| 106 | S | S | G | |
| 251 | A | T | A | |
| ORF4 | 69 | C | Y | C |
| 125 | V | A | V | |
| ORF5 | 13 | Q | Q | R |
| 151 | R | G | R | |
| ORF6 | 16 | Q | E | Q |
| 121 | G | G | R |
a
The amino acid residue is numbered based on the PL97-1.
b
The amino acid residues that are not represented by either RespPRRS MLV or VR-2332 are circled.