>sp|B3DQA4|HIS4_BIFLD 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Bifidobacterium longum GN=hisA MSLTLLPAVDVRDGKAVRLRQGESGSETDYGSPFEAARTWVEAGAEWIHLVDLDAAFGTG NNRDQLREIVHELGDRVNIELSGGVRDDASLDAALEAGAARVNIGTAALENPDWTASVIK KYGDRVAVGLDVRGHTLAARGWTREGGDLFETMKFLDSVGCLRYVVTDVAKDGMMSGPNI QLLSEVAERTDAKVTASGGISKLDDLRAIKELAEIGVDSAILGKSLYARAFTLQEALEVA K