>sp|Q8PCM7|RISB_XANCP 6,7-dimethyl-8-ribityllumazine synthase OS=Xanthomonas campestris pv. campestris GN=ribH MTHYEGDLRPTTARFVIIASRWNARITDALVTGARQSLAGNGIGEDAIDVVRVPGAWEIP MAANRVAQGGQHAAIIALGCVIRGDTRHYEHVADLCAEGLMSVQLQTGVPVLNGVLAVER VEDAEARAGGSHGNKGEECALAALELVNLMELLP