TABLE 5.
Comparison of amino acid sequences of HA, NA, and M2 genes of representative viruses from southern China
| Virus | Genotype | Residue at RBSa
|
NA deletion (aa) | Connecting peptidec | M2 residue at amantadine resistance mutation position
|
||
|---|---|---|---|---|---|---|---|
| 226 | 228 | 27 | 31 | ||||
| Qa/HK/G1/97 | A0 | L | G | 38-39 | R-S-S-R | V | S |
| Dk/HK/Y280/97 | B0 | L | G | 62-64 | R-S-S-R | V | S |
| Dk/HK/Y439/97 | Korean | Q | G | A-S-N-R | V | S | |
| Dk/HK/289/78 | Q | G | A-S-N-R | ||||
| Dk/ST/163/04 | Korean | Q | G | A-S-D-R | V | S | |
| Dk/ST/7448/04 | Korean | Q | G | A-S-G-R | V | S | |
| Cu/ST/22116/05 | A4 | Q | G | 38-39 | R-S-S-R | V | S |
| Pa/ST/2063/00 | B1 | Qb | G | R-S-S-R | V | N | |
| Pa/ST/24/00 | B5 | L | G | R-S-S-R | V | S | |
| Gf/ST/1677/00 | B3 | L | G | 62-64 | R-S-S-R | V | S |
| Cu/ST/338/02 | B8 | L | G | R-S-S-R | V | S | |
| Pa/ST/4525/02 | B3 | L | G | R-S-S-R | V | S | |
| Ph/ST/443/03 | B7 | L | G | K-S-S-R | V | S | |
| Ck/ST/94/00 | B3 | L | G | 62-64 | R-S-S-R | V | S |
| Ck/ST/1579/00 | B3 | L | G | 62-64 | R-S-S-R | V | N |
| Ck/ST/4608/02 | B3 | L | G | R-S-S-R | A | S | |
| Ck/HN/774/02 | B17 | L | G | 62-64 | R-L-S-R | V | G |
| Ck/ST/3040/03 | B21 | L | G | R-S-I-R | V | S | |
| Ck/GX/1857/04 | B25 | L | G | 62-64 | R-A-S-R | V | S |
| Ck/GX/187/05 | B25 | L | G | 62-64 | R-A-S-K | V | S |
| Ck/ST/22504/05 | B14 | L | G | R-S-S-R | V | N | |
a
RBS, receptor binding site.
b
Representative of six viruses from other minor poultry species.
c
Connecting peptide from positions −4 to −1 of HA1. Italics represent newly identified motifs.