>sp|A1S4C0|RISB_SHEAM 6,7-dimethyl-8-ribityllumazine synthase OS=Shewanella amazonensis GN=ribH MHIVEGHIEAKSAKVAIVVSRFNSFVVESLLSGAIDTLKRFGQVSEDNITVVRVPGAFEL PLAAKKVAASGKFDGIIALGAVIRGGTPHFDFVAGECNKGLAQVSLEFNTPVSFGVLTTD TIEQAIERSGTKAGNKGGEAALGLLEMVNVLNAIDKEL