>sp|B7GQ51|HIS4_BIFLS 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Bifidobacterium longum subsp. infantis GN=hisA MSLTLLPAVDVRDGKAVRLRQGESGSETDYGSPFEAARTWVEAGAEWIHLVDLDAAFGTG NNRDQLREIVHELGDRVNIELSGGVRDDASLDAALEAGAARVNIGTAALENPDWTASVIK KYGDRVAVGLDVRGHTLAARGWTREGGDLFETMKFLDSVGCSRYVVTDVAKDGMMSGPNI QLLREVAERTDAKVTASGGISKLDDLRAIKELAEIGVDSAILGKSLYARAFTLQEALAVA K