>sp|A3PCK5|HIS4_PROM0 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Prochlorococcus marinus GN=hisA MNLIPAIDLMNGKCVRLFKGDFNKRKDFTKEPHEQAKFWESEGAKCIHIVDLDAAKTGSP TNDKSIKKIAKTVNIPIQIGGGIRSQERIEQLFSYGIEKVIMGTSAIENKELVKDLSNKY PGRIIVGIDAKNGKVSTRGWLEQSNIFATDLVKEFSSFKIASFIVTDINTDGTLEGTNEE FIKSILEITDIPVIASGGVGSISDLLSLVKFENSGLFGVIVGKALYENKFTIKEANNVLS SERLNDFDLNRNYYA