>tr|M1RXN2|M1RXN2_9INFA Protein PB1-F2 OS=Influenza A virus GN=PB1-F2 MEREQDTPWTQSTEHINIQKRGNGQQTQKLEHPNLTQLMDHYLRIMSQVDMHKQTVSWKQ WLSLKSPTQESLKTRVLKRWKLFNKQEWTS