4-methoxybenzoate + AH2 + O2 = 4-hydroxybenzoate + formaldehyde + A + H2O
4-methoxybenzoate + ah2 + o2 = 4-hydroxybenzoate + formaldehyde + a + h2o
"4-methoxybenzoate monooxygenase (O-demethylating)"
"4-methoxybenzoate monooxygenase (o-demethylating)"