>sp|B1XQI2|HIS4_PICP2 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Picosynechococcus sp. GN=hisA MEVIPAIDLLGGQCVRLYQGDYQQAQVFNNDPVQVARTWAEQGATRLHVVDLDGAKQGES VNLGAIAKIAAAIDIPVQVGGGLRTVESVAQLFDVGVERAILGTAAVDNPDLVTELCAKY PGRIAVGIDARDGKVATKGWLETSAVLATDLAKQMATQGVAAIIYTDIHRDGTMAGPNLE ALRELAATIEIPVIASGGVSSLADLVNLVALEGIGVTGAIVGRAIYTGDINLAEAVKAVG PQRLQDVFPDDGTAIA