>sp|Q20MH0|PB1F2_I33A0 Protein PB1-F2 OS=Influenza A virus GN=PB1 MGQEQDTPWILSTGHISTQKGEDGQQTPKLEHRNSTRLMGHCQKTMNQVVMPKQIVYWKQ WPSLRNPILVSLKTRVLKRWRLFSKHEWTS