>sp|Q31B81|HIS4_PROM9 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Prochlorococcus marinus (strain MIT 9312) OX=74546 GN=hisA PE=3 SV=1 MELIPAIDLMNGKCVRLFKGDFNKRKDFTKEPHEQAKYWESEGAKYIHIVDLDAAKTGSP TNDKSIKDIAKTVNIPIQIGGGIRSQERIEQLFSYGIEKVIMGTSAIENKELVKDLSNKF PGRIIVGIDAKDGKVSTRGWLEQSNILATDLVREFSSFKIASFIVTDINTDGTLEGTNEE FIKRILEITDIPVIASGGVGSISDLLSLVKLENSGLFGVIVGKALYENKFKISEAINVLS SERLTDFDLNNNYYA