1.14.14.124 3alpha-hydroxy-3,5-dihydromonacolin L acid = monacolin L acid + H2O (1b), spontaneous 727702 1.14.14.124 dihydromonacolin L acid + O2 + [reduced NADPH-hemoprotein reductase] = 3alpha-hydroxy-3,5-dihydromonacolin L acid + [oxidized NADPH-hemoprotein reductase] + H2O (1a) 727702 1.14.14.124 dihydromonacolin L acid + O2 + [reduced NADPH-hemoprotein reductase] = monacolin L acid + [oxidized NADPH-hemoprotein reductase] + 2 H2O (overall reaction) 727702