TABLE 3.
Nucleotide homology between the gene segments of H6 viruses and human virus HK/156/97 (H5N1)
| Virus | % Homology to gene segments of HK/156/97a
|
||||||
|---|---|---|---|---|---|---|---|
| NS | M | NAb | NP | PA | PB1 | PB2 | |
| Tl/HK/W312/97 | 98.8 | 99.1 | 97.0 | 98.4 | 98.1 | 98.1 | 98.6 |
| Ph/HK/SH39/99 | 98.4 | 98.6 | 96.6 | 97.9 | 98.3 | 97.9 | 98.2 |
| Qa/HK/1721-20/99 | 98.5 | 98.9 | 96.7 | 97.6 | 97.8 | 98.1 | 98.1 |
| Qa/HK/1721-30/99 | 99.0 | 98.9 | 96.6 | 97.3 | 97.8 | 98.2 | 98.1 |
| Qa/Hk/SF550/00 | 98.2 | 98.4 | 96.0 | 97.6 | 97.2 | 98.0 | 97.5 |
| Qa/HK/SF595/00 | 98.8 | 98.4 | 96.4 | 97.4 | 97.2 | 98.0 | 98.0 |
| Ph/HK/NT261/00 | 98.4 | 98.4 | 96.1 | 97.8 | 97.5 | 98.2 | 97.5 |
| Cu/HK/FY295/00 | 98.2 | 98.1 | 96.1 | 97.5 | 97.1 | 97.9 | 97.4 |
| Dk/HK/3461/99 | 92.4 | 92.3 | 90.0 | 93.2 | 91.5 | 90.3 | 86.3 |
| Dk/HK/3096/99 | 92.4 | 91.3 | —c | 93.1 | NTd | 91.4 | 90.0 |
| Dk/HK/175/77 | 93.0 | NT | 90.2 | NT | NT | NT | 88.7 |
a
Calculation based on the nucleotide sequences of PB2 (nucleotides [nt] 988 to 2289), PB1 (nt 67 to 1428), PA (nt 25 to 1677), NP (nt 46 to 1398), NA (nt 66 to 1373), M (nt 50 to 784) and NS (nt 39 to 719) genes.
b
Dk/HK/3461/99 and Dk/HK/175/77 do not have the characteristic deletion of 19 amino acids in the stalk region.
c
—, different subtype.
d
NT, not tested.