>sp|Q9X0X1|PURS_THEMA Phosphoribosylformylglycinamidine synthase subunit PurS OS=Thermotoga maritima GN=purS MPLFKFAIDVQYRSNVRDPRGETIERVLREEKGLPVKKLRLGKSIHLEVEAENKEKAYEI VKKACEELLVNPVVEEYEVREL