4-hydroxy-3-(all-trans-hexaprenyl)benzoate + 2 reduced [2Fe-2S]-[ferredoxin] + O2 + 2 H(+) = 3,4-dihydroxy-5-(all-trans-hexaprenyl)benzoate + 2 oxidized [2Fe-2S]-[ferredoxin] + H2O
4-hydroxy-3-(all-trans-hexaprenyl)benzoate + 2 reduced [2fe-2s]-[ferredoxin] + o2 + 2 h(+) = 3,4-dihydroxy-5-(all-trans-hexaprenyl)benzoate + 2 oxidized [2fe-2s]-[ferredoxin] + h2o