>sp|Q21V18|RISB_ALBFT 6,7-dimethyl-8-ribityllumazine synthase OS=Albidiferax ferrireducens GN=ribH MLDANQGTLAASDSRLNGKKLRIGIVQARFNEPITNTLAQACKAELLALGVAEKHIDLVQ VPGALEVPVALLALAEKLEYDALVAVGCIIRGETYHFELVANESGAGVSRVALDYQIPIA NAILTTENLAQAIARQTEKGRDAARVAVEMANLLSDI