(25R)-3-oxocholest-4-en-26-ol + 2 reduced [2Fe-2S]-[ferredoxin] + O2 + 2 H(+) <=> (25R)-3-oxocholest-4-en-26-al + 2 oxidized [2Fe-2S]-[ferredoxin] + 2 H2O
(25r)-3-oxocholest-4-en-26-ol + 2 reduced [2fe-2s]-[ferredoxin] + o2 + 2 h(+) <=> (25r)-3-oxocholest-4-en-26-al + 2 oxidized [2fe-2s]-[ferredoxin] + 2 h2o