>tr|K9JTB1|K9JTB1_9INFA RNA-directed RNA polymerase catalytic subunit OS=Influenza A virus GN=PB1 MDVNPTLLFLKVPAQNAISTTFPYTGDPPYSHGTGTGYTMDTVNRTHQYSERGKWTINTE TGAPQLNPIDGPLPEDNEPTGYAQTDCVLEAMAFLEKSHPGIFENSCLETMEVIQQTRVD KLTQGRQTFDWTLNRNQPAATALANTIEVFRLNGLTTSESGRLIDFLKDVMESMDKEEME IVTHFQRKRRVRDNMTKKMVTQRTIGKKKQKLNKRGYLIRALTLNTMTKDAERGKLKRRA IATPGMQIRGFVYFVETLARSICEKLEQSGLPVGGNEKKAKLANVVRKMMTNSQDTELSF TITGDNTKWNENQNPRMFLAMITYITRNQPEWFRNVLSVAPIMFSNKMARLGKGYMFESK NMKLRTQIPAEMLSGIDLRYFNDSTRKKIEKIRPLLIEGAASLSPGMMMGMFNMLSTVLG VSILNLGQKEYTKTAYWWDGLQSSDDFALIVNAPNHEGIQAGVDRFYRTCKLLGINMSKK KSYINRTGTFEFTSFFYRYGFVANFSMELPSFGVSGINESADMSIGVTVIKNNMINNDLG PATAQMALQLFIKDYRYTYRCHRGDTQIQTRRSFEIKKLWDQTRSKAGLLVSDGGPNLYN IRNLHIPEVCLKWELMDKDYQGRLCNPLNPFVSHKEIESVNNAVVMPSHGPAKTMEYDAV ATTHSWVPKRNRSILNTSQRGILEDEQMYQKCCNLFEKFFPSSSYRRPVGISSMVEAMVS RARIDARIDFESGRIKKEDFAEIMKICSTIEDLRRQK