purM PUR5_BIFLS 345 AIRS Blon_1959 BLIJ_2031 Phosphoribosylformylglycinamidine cyclo-ligase MPKAYENAGVSVEAGYEVVKRIKSHVARTNRPGVVGGIGGFGGLFDLASLGYKEPVLISGTDGVGTKLMVAKLANKHNTIGIDCVAMCVNDIAAQGAEPLFFLDYIACGKNDPALLEQVVAGVADGCVQAGSALVGGETAEMPGMYDEDEYDLAGFSIGVAEKSAIVDGSTIVEGDVLIGLPSTGVHSNGFSLVRKALFEQAGYTVDTKLDELGGEKLGDVLLTPTKIYVKALSPLFKAGVVKGVAHITGGGFIENIPRMIPDGLAAEIELGTWPVLPIFDVLEKAGNIDHKEMYNIFNMGIGMVLAIDPARKDEALKLLADNNEPAYVLGQITADTTGTQIVLK Phosphoribosyl-aminoimidazole synthetase AIR synthase