Hemagglutinin molecules of Hong Kong, equine-2, and duck/Ukraine influenza viruses lack N-terminal aspartic acid.
D000818:Animals; D001224:Aspartic Acid / Q000032:analysis; D006389:Hemagglutinins, Viral / Q000032:analysis*; D006736:Horses; D009980:Influenza A virus / Q000276:immunology*; D012328:RNA Viruses / Q000276:immunology*; D011995:Recombination, Genetic
D006389:Hemagglutinins, Viral; D001224:Aspartic Acid