dihydromonacolin L carboxylate + reduced [NADPH--hemoprotein reductase] + O2 <=> 3alpha-hydroxy-3,5-dihydromonacolin L carboxylate + oxidized [NADPH--hemoprotein reductase] + H2O + H(+)
dihydromonacolin l carboxylate + reduced [nadph--hemoprotein reductase] + o2 <=> 3alpha-hydroxy-3,5-dihydromonacolin l carboxylate + oxidized [nadph--hemoprotein reductase] + h2o + h(+)