4-aminobenzoate + AH2 + 2 O2 <=> 4-nitrobenzoate + A + 2 H2O
4-aminobenzoate + ah2 + 2 o2 <=> 4-nitrobenzoate + a + 2 h2o
4-aminobenzoate + AH2 + 2 O2 <=> 4-nitrobenzoate + A + 2 H2O
4-aminobenzoate + ah2 + 2 o2 <=> 4-nitrobenzoate + a + 2 h2o