title: An evidence of the peroxidase-dependent oxygen transfer from hydrogen peroxide to sulfides.
abstract: Horseradish- and chloro-peroxidase catalyzed oxidation of sulfides have been investigated. Thioanisoles were oxygenated to the corresponding sulfoxides by such peroxidases at the expense of H2O2. Dealkylation was observed only in the chloroperoxidase-dependent oxidations of p-methoxy- and p-iso-propoxy-thioanisoles. The experiments with 18O-labeled H2O2 indicated that an oxygen atom of H2O2 is incorporated into the sulfoxides. These research lead to the conclusion that compound I or II is capable of acting as an oxygen donor as well as an electron acceptor.
mesh_terms: D003577:Cytochrome P-450 Enzyme System / Q000378:metabolism; D006861:Hydrogen Peroxide / Q000378:metabolism*; D010100:Oxygen / Q000378:metabolism*; D010544:Peroxidases / Q000378:metabolism*; D013440:Sulfides / Q000378:metabolism*
chemical_list: D013440:Sulfides; D003577:Cytochrome P-450 Enzyme System; D006861:Hydrogen Peroxide; D010544:Peroxidases; D010100:Oxygen