>4NRL_1|Chains A, C, E|Hemagglutinin HA1 chain|Influenza B virus (518987) DRICTGITSSNSPHVVKTATQGEVNVTGVIPLTTTPTRSHFANLKGTQTRGKLCPNCFNCTDLDVALGRPKCMGNIPSAKVSILHEVKPVTSGCYPIMHDRTKIRQLPNLLRGYENIRLSTSNVINTETAPGGPYKVGTSGSCPNVTNGNGFFNTMAWVIPKDNNKIAINPVTVEVPYICSEGEDQITVWGFHSDDKTQMERLYGDSNPQKFTSSANGVTTHYVSQIGGFPNQTEDEGLKQSGRIVVDYMVQKPGKTGTIVYQRGILLPQKVWCASGRSKVIKGSLPLIGEADCLHEKYGGLNKSKPYYTGEHAKAIGNCPIWVKTPLKLANGTKYRPPAKLLKER >4NRL_2|Chains B, D, F|Hemagglutinin HA2 chain|Influenza B virus (518987) GFFGAIAGFLEGGWEGMIAGWHGYTSHGAHGVAVAADLKSTQEAINKITKNLNSLSELEVKNLQRLSGAMNELHDEILELDEKVDDLRADTISSQIELAVLLSNEGIINSEDEHLLALERKLKKMLGPSAVEIGNGCFETKHKCNQTCLDRIAAGTFNAGDFSLPTFDSLNITAASGALVPR