1.14.17.1 dopamine + 2 ascorbate + O2 = noradrenaline + 2 monodehydroascorbate + H2O - - 1.14.17.1 dopamine + 2 ascorbate + O2 = noradrenaline + 2 monodehydroascorbate + H2O during the reaction, an O atom from molecular O2 is inserted at the beta-carbon in dopamine with retention of configuration, and the second O atom goes to water. The reaction also requires two electrons provided by two ascorbate molecules that are oxidized to semihydroascorbate 746431 1.14.17.1 dopamine + 2 ascorbate + O2 = noradrenaline + 2 monodehydroascorbate + H2O mechanism 438608, 438612, 438613, 438617, 438620, 438626 1.14.17.1 dopamine + 2 ascorbate + O2 = noradrenaline + 2 monodehydroascorbate + H2O new mechanism of enzyme 438599 1.14.17.1 dopamine + 2 ascorbate + O2 = noradrenaline + 2 monodehydroascorbate + H2O ping pong mechanism 438604 1.14.17.1 dopamine + 2 ascorbate + O2 = noradrenaline + 2 monodehydroascorbate + H2O stoichiometry 438607, 438620 1.14.17.1 dopamine + 2 ascorbate + O2 = noradrenaline + 2 monodehydroascorbate + H2O uni-uni bi-uni ping pong mechanism 438603