cholest-4,6-dien-3-one + A + H2O <=> 25-hydroxycholest-4,6-dien-3-one + AH2
cholest-4,6-dien-3-one + a + h2o <=> 25-hydroxycholest-4,6-dien-3-one + ah2
cholest-4,6-dien-3-one + A + H2O <=> 25-hydroxycholest-4,6-dien-3-one + AH2
cholest-4,6-dien-3-one + a + h2o <=> 25-hydroxycholest-4,6-dien-3-one + ah2