>sp|Q9HRM5|RISB_HALSA 6,7-dimethyl-8-ribityllumazine synthase OS=Halobacterium salinarum GN=ribH MTRLGLVVAEFNRSVTERMEAAAREAAADADAAITDTVHVPGAYDSPLAADRLARRDDID AVAVVGAIVTGDTDHDHVIASATADTLTDVSLERDTPVTFGVSGPGMSGAEARERVEKGA AAVESAVSLTQEL