Table 3. Count the number of H7N9 viruses with amino acid substitutions identified in this study
Segment | Position | Amino acid | Frequency of substitution (no. of strains with the substitution/total no. of strains) |
|---|---|---|---|
PB2 | 627 | E | 1351/2370 |
K | 915/2370 | ||
PB1 | 215 | W | 1/2358 |
R | 2007/2358 | ||
638 | D | 2197/2358 | |
G | 41/2358 | ||
PA | 97 | T | 2342/2357 |
I | 7/2357 | ||
HA | 229 | R | 2619/2647 |
G | 1/2647 | ||
235 | L | 2590/2647 | |
S | 10/2647 | ||
288 | G | 2276/2647 | |
R | 7/2647 | ||
503 | G | 12/2647 | |
R | 0/2647 | ||
NA | 3 | P | 2586/2620 |
Q | 1/2620 | ||
134 | R | 2337/2620 | |
I | 0/2620 |