Peroxidase

Peroxidase converts hydrogen peroxide into water and oxygen, as well as hydrolyzes per-ox (hydroperoxides). Typical substrates for peroxidases are hydrogen peroxide, perhydrol, and sodium hypochlorite, but in different sources these enzymes can react with a number of other compounds (for example, superoxide anion). Therefore, it would be more correct to call the entire group of oxidoreductases that catalyze the overall transformations of peroxides and peroxide compounds as peroxidases. P.'s name is due to the initial discovery of groups of peroxidase enzymes. The synthesis of peroxidase systems is ensured by the action of protein (heme, iron, manganese, copper, cobalt or molybdenum residues) - an enzymatic catalyst located in the active center of the enzyme molecule. In the case of peroxides, the oxygen atoms are linked by covalent bonds; in the case of peroxide compounds, they are “located” between the oxygen atom and the hydroxyl group atom. The above functional groups of organic compounds are formed as a result of the oxidation of secondary alcohols; hydroquinone, formed during the oxidation of secondary alcohol, under the influence of iron protein becomes a red solvent (the color can be red-violet, reddish-brown, yellow-pink, GM-yucin, green, etc.). The formation of a color reagent is possible due to the formation of an oxidation product - peroxide or perhydrol. Two atomic groups of oxygen-acceptor groups in the peroxide molecule become easily accessible for metal oxidation and, ultimately, when water is eliminated, they can turn into water and an oxygen molecule.