>tr|D2C4H2|D2C4H2_THEP2 Phosphoribosylformylglycinamidine synthase subunit PurS OS=Thermotoga petrophila GN=purS MPLFKFAIDVQYRSNVRDPRGETIERVLREEKGLPVKKLRLGKSIHLEVEAENKEKAYEI VKKACEELLVNPVVEEYEVREL