>sp|A1VEL0|RISB_NITV4 6,7-dimethyl-8-ribityllumazine synthase OS=Nitratidesulfovibrio vulgaris GN=ribH MLHIKTIEGQLDAKGLKFAIVATRFNDFIVDRLIGGACDYLQRHGCDRENLTIVRIPGAF EMPLVAKKLAHSGKYDGIIALGAVIRGATPHFDFVSNEASKGLAQACLESGVPLGFGLLT TDNIEQAIERAGSKAGNKGAEAAAAVLETVRVMEQL