Table 2. Comparison of the specific amino acid sequences of H7 AIV isolates

Virus HA cleavage site RBS NA deletion (69-73) PB2 (E627K) PB1 (I368V) NS deletion (218-230) M2 (S31N)
235/2261 237/228
A/common teal/Korea/KNU12-15/2012(H7N1) PEIPKGR/G Q G No E I No S
A/mallard/Korea/KNU13-3/2013(H7N1) PELPKGR/G Q G No E I No S
A/mallard/Korea/KNU10-3/2010(N7N7) PELPKGR/G Q G No E I No S
A/mallard/Korea/KNU11-12/2011(H7N7) PELPKGR/G Q G No E I No S
A/common teal/Korea/KNU13-1/2013(H7N7) PEIPKGR/G Q G No E I No S
A/common teal/Korea/KNU13-7/2013(H7N7) PELPKGR/G Q G No E I No S
A/Hangzhou/1/2013 (H7N9) PEIPKGR/G L G Yes K V Yes N
A/chicken/Shanghai/S1053/2013(H7N9) PEIPKGR/G L G Yes E V Yes N
A/turkey/Italy/4617/1999 (H7N1) KGSRVRR/G Q G Yes E I No S
H7/H3 numbering.