TABLE 5.
Comparison of amino acid sequences of pig and avian H9N2 HAs
| Virus | Amino acid residue relevant in receptor for binding
|
Other amino acid change
|
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 183 | 190 | 226 | 227 | 228 | 32 | 174 | 205 | 274 | 279 | 286 | |
| Ck/Beijing/1/94 | N | V | Q | Q | G | T | S | T | N | V | H |
| Ck/HK/739/94 | H | A | •a | • | • | • | • | • | S | • | • |
| Sw/HK/9/98 | • | • | L | H | • | • | • | • | • | • | • |
| Sw/HK/10/98 | • | • | L | H | • | • | • | • | • | • | • |
| Qa/HK/NT/28/99 | • | • | L | • | • | N | N | A | • | • | • |
| Ck/HK/G9/97 | • | A | L | • | • | N | • | A | • | • | • |
| Dk/HK/Y280/97 | • | T | L | • | • | N | N | A | • | • | • |
| Ck/HK/FY20/99 | • | A | L | • | • | N | N | A | • | • | • |
| SCk/HK/SF43/99 | • | A | L | • | • | N | N | A | • | • | • |
| Sw/HK/2106/98 | • | A | L | • | • | N | N | A | • | • | • |
| Sw/HK/3297/98 | • | A | L | • | • | N | N | A | K | A | Q |
a
•, amino acid is conserved relative to Ck/Beijing/1/94.