ID 1.14.13.64 DE 4-hydroxybenzoate 1-hydroxylase. AN 4-hydroxybenzoate 1-monooxygenase. CA 4-hydroxybenzoate + NAD(P)H + O(2) = hydroquinone + NAD(P)(+) + H(2)O + CA CO(2). CF FAD. CC -!- The enzyme from Candida parapsilosis is specific for CC 4-hydroxybenzoate derivatives and prefers NADH to NADPH as electron CC donor. //