Table 1.
Nucleotide and amino acid residues located in six segments of A(H1N1)pdm09 viruses specific for the two clusters
| Virus | Residue at the indicated positionsa |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| HA |
NA 742 (248) | M1 |
NP |
NS1 367 (123) | PB2 2163 (721) | ||||
| 658 (220) | 1480 (470) | 492 (164) | 600 (200) | 298 (100) | 1143 (381) | ||||
| Cluster I | T (S) | C (L) | A (N) | G (Q) | G (A) | G (V) | G (A) | A (I) | G (K) |
| Cluster II | A (T) | T (L) | G (D) | A (Q) | A (A) | A (I) | A (A) | G (V) | A (K) |
| Norway3487 | A (T) | T (L) | T (D) | A (Q) | T (A) | G (G) | T (D) | C (V) | A (K) |
| Norway3568 | A (T) | T (L) | T (D) | A (Q) | T (A) | G (G) | T (D) | C (V) | A (K) |
a
Fereidouni et al. (7) analyzed all complete genome sequences of A(H1N1)pdm09 viruses available as of 10 September 2009. Nucleotide positions and amino acid positions (in parentheses) for all genes are counted from the start codon. Sequences of Norway3487 and Norway3568 viruses are also shown.