>sp|Q46IM4|PUR5_PROMT Phosphoribosylformylglycinamidine cyclo-ligase OS=Prochlorococcus marinus GN=purM MDYKTAGVDVTAGRAFVERIKSCVEKTHKSEVIGGLGGFGGCIRIPKGFESPVLVSGTDG VGTKLELAQQYGCHFGVGIDLVAMCVNDVITNGARPLFFLDYIASGTLTPDALAEVIEGI AAGCCQSDCSLLGGETAEMPGFYPIGRYDLAGFCVGIVENHHLIDGTKINCGDQIIGIKS NGVHSNGFSLVRKVLSMANVDENTLFGKDKRNLIQSLLEPTAIYVQLVEKLLRENLPIHG MTHITGGGLPENLPRIFPSGLSPHIDITTWEITEIFNWLQNAGDIPEIDLWNTFNMGIGF CLIVPKNEVNSALEICIKNDFEAWNIGQVVESQNNSKNIGIFGIPS