>tr|A0A841HA68|A0A841HA68_HALSI 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Halobacterium salinarum GN=hisA MTFESFTVLPAVDMQDGQVVQLVQGERGTERTYGDPVDAATDWVAAGAEALHLVDLDGAF EGARANATAVEDILDATDVSVQVGGGIRSAEDATALLDRGVDRVILGTAAIETPDIVGEI AAAYSDGVLVSLDAKDGEVVVEGWTEGTGMDPVAAAQRYADLGAAGILFTDVDVEGKQEG VRTDPVRDLVDSVDIPVIASGGVATVDDVRALEAAGAAGAVVGTALYEGNFTLADAQAAV ED