Figure 2: Alignment of H5 protein of the high pathogenicity A/Viet Nam/1203/2004 (H5N1) virus (designated h5) to the H7 protein of the low pathogenicity A/Shanghai/2/2013 (H7N9) virus (designated h7). Alignment was done using ClustalW2 software with default parameters. Furin protease cleavage site between HA1 and HA2 in the H5 is indicated in gray colour.