urate + NADPH + O2 + H(+) => 5-hydroxyisourate + NADP(+) + H2O
urate + nadph + o2 + h(+) => 5-hydroxyisourate + nadp(+) + h2o
urate + NADPH + O2 + H(+) => 5-hydroxyisourate + NADP(+) + H2O
urate + nadph + o2 + h(+) => 5-hydroxyisourate + nadp(+) + h2o