>tr|B3RE91|B3RE91_9INFA RNA-directed RNA polymerase catalytic subunit OS=Influenza A virus GN=PB1 MDVNPTLLFLKVPAQNAISTTFPYTGDPPYSHGTGTGYTMDTVNRTHQYSEKGKWTTNTE TGAPQLNPIDGPLPEDNEPSGYAQTDCVLEAMAFLEESHPGIFENSCLETMEVVQQTRVD RLTQGRQTYDWTLNRNQPAATALANTIEVFRSNGLTANESGRLIDFLKDVMESMDKEEME ITTHFQRKRRVRDNMTKKMVTQRTIGKKKQRVNKRSYLIRALTLNTMTKDAERGKLKRRA IATPGMQIRGFVYFVETLARSICEKLEQSGLPVGGNEKKAKLANVVRKMMTNSQDTELSF TITGDNTKWNENQNPRMFLAMITYITKNQPEWFRNVLSIAPIMFSNKMARLGKGYMFESK SMKLRTQIPAEMLASIDLKYFNESTRKKIEKIRPLLIDGTASLSPGMMMGMFNMLSTVLG VSILNLGQKRYTKTTYWWDGLQSSDDFALIVNAPNHEGIQAGVDRFYRTCKLVGINMSKK KSYINRTGTFEFTSFFYRYGFVANFSMELPSFGVSGINESADMSIGVTVIKNNMINNDLG PATAQMALQLFIKDYRYTYRCHRGDTQIQTRRSFELEKLWEQTRSKAGLLVSDGGPNLYN IRNLHIPEVCLKWELMDEDYQGRLCNPLNPFVSHKEIESVNNAVVMPAHGPAKSMEYDAV ATTHSWIPKRNRSILNTSQRGILEDEQMYQKCCNLFEKFFPSSSYRRPVGISSMVEAMVS RARIDARIDFESGRIKKEEFAEIMKICSTIEELRRQK