>tr|M1SID8|M1SID8_9INFA Protein PB1-F2 OS=Influenza A virus GN=PB1-F2 MEREQDTPWTQSTEHINIQKRGNGQQTQKLEHPNLTQLMDHYLRIMSQVDMHKQTVSWKQ WLSLKSPTQESLKTRVLKRWKLFNKQEWTS