4-hydroxybenzoate + NADH + O2 + H(+) <=> 3,4-dihydroxybenzoate + NAD(+) + H2O
4-hydroxybenzoate + nadh + o2 + h(+) <=> 3,4-dihydroxybenzoate + nad(+) + h2o
4-hydroxybenzoate + NADH + O2 + H(+) <=> 3,4-dihydroxybenzoate + NAD(+) + H2O
4-hydroxybenzoate + nadh + o2 + h(+) <=> 3,4-dihydroxybenzoate + nad(+) + h2o