xanthine + 2-oxoglutarate + O2 => urate + succinate + CO2
xanthine + 2-oxoglutarate + o2 => urate + succinate + co2
xanthine + 2-oxoglutarate + O2 => urate + succinate + CO2
xanthine + 2-oxoglutarate + o2 => urate + succinate + co2