>sp|C6BSE3|HIS4_MARSD 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Maridesulfovibrio salexigens GN=hisA MIVFPAVDIKDGVCVRLSQGQADAVTVFSSDPVAQAKYWETQGARYLHVVDLDGAFSGMP KNFELIRDICSQLSIPVQLGGGIRDIETASKYLEAGVRRLIIGTMALEDEETFAELCAKF PGQIGVSLDAVNGQLKSRGWVEDAGITVFDIIPRIEAAGAAFIIYTDISRDGMQTGVNVM ALSELCSKTKLPVIAAGGVATLEDVINLQPLVSKGLEGAVSGQAIYTGTLNFAEAMEWIE NN