1.1.3.17 betaine aldehyde + O2 + H2O = betaine + H2O2 - - 1.1.3.17 betaine aldehyde + O2 + H2O = betaine + H2O2 His466 is a catalytic residue involved in the oxidation but not the reduction, reaction mechanism 654773 1.1.3.17 betaine aldehyde + O2 + H2O = betaine + H2O2 reaction mechanism, the enzyme catalyzes the four-electron-oxidation of choline to glycine betaine via the intermediate betaine aldehyde in two sequential FAD-dependent reaction steps 672121 1.1.3.17 choline + 2 O2 + H2O = betaine + 2 H2O2 overall reaction - 1.1.3.17 choline + 2 O2 + H2O = betaine + 2 H2O2 reaction mechanism of reductive and oxidative half-reactions, determination of a mechanism of flavin oxidation that directly results in the formation of oxidized flavin and hydrogen peroxide without stabilization of reaction intermediates, overview -, 724368 1.1.3.17 choline + 2 O2 + H2O = betaine + 2 H2O2 two-step, four-electron oxidation (alcohol oxidation, aldehyd hydration, aldehyde oxidation) 696242 1.1.3.17 choline + O2 = betaine aldehyde + H2O2 - - 1.1.3.17 choline + O2 = betaine aldehyde + H2O2 choline hydroxyl proton is not in flight in the transition state for CH bond cleavage, steps of flavin reduction by choline and betaine aldehyde is rate rate limiting for the overall turnover 655800 1.1.3.17 choline + O2 = betaine aldehyde + H2O2 His466 is a catalytic residue involved in the oxidation but not the reduction, reaction mechanism 654773 1.1.3.17 choline + O2 = betaine aldehyde + H2O2 mechanism, carbon-hydrogen bond cleavage of choline is nearly irreversible and fully rate-limiting at low pH 654876