>4en7_A mol:protein length:224 Hemagglutinin components HA-22/23/53ISEFDYKDHDIDYKDDDDKWIMSLSIKELYYTKDKSINNVNLADGNYVVNRGDGWILSRQNQNLGGNISNNGCTAIVGDLRIRETATPYYYPTASFNEEYIKNNVQNVFANFTEASEIPIGFEFSKTAPSNKSLYMYLQYTYIRYEIIKVLQNTVTERAVLYVPSLGYVKSIEFNSEEQIDKNFYFTSQDKCILNEKFIYKKIDDTITVKESKNSNNNINFNTS