>sp|Q8PPD6|RISB_XANAC 6,7-dimethyl-8-ribityllumazine synthase OS=Xanthomonas axonopodis pv. citri GN=ribH MTHYEGDLRPTTARFAIIASRWNARITDVLVAGARQSLAGNGIGEDAIDVIRVPGAWEIP IAANRVAQSGQHGAIIALGCVIRGDTRHYEHVADLCAEGLMSVQLQTGVPVLNGVLAVER VEDAEARAGGSHGNKGEECALAALELVNLMELLP