>sp|Q8ZTE3|RISB_PYRAE 6,7-dimethyl-8-ribityllumazine synthase OS=Pyrobaculum aerophilum GN=ribH MVRLAIVVAEFNYDITQLMLQKAVEHAKFLGAEITYIVKTPGVYDIPMILKELVAKEEVD AVATLGAVIQGATKHDELVATQAARKILDIAVESGKPITLGIIGHGANRIQALERVEEYA RRAVEAAVKMARRKKALREAKYNGSTVYID