oxidases

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oxidases, in biochemistry, enzymes that catalyze reactions that directly involve molecular oxygen (see oxidation and reduction). Some utilize flavin coenzymes derived from riboflavin (see vitamin B2). Others oxidize compounds by the removal of hydrogen, such as alcohol dehydrogenase's catalysis of ethanol to acetaldehyde. Copper-containing oxidases catalyze a variety of biological oxidations.

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oxidases (oxygenases) Enzymes that oxidize compounds by removing hydrogen and reacting directly with oxygen to form water or hydrogen peroxide. They thus differ from dehydrogenases, which transfer the hydrogen to a coenzyme.

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oxidase An enzyme that catalyses reactions involving the oxidation of a substrate using molecular oxygen as an electron acceptor.

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oxidase An enzyme that catalyses reactions involving the oxidation of a substrate using molecular oxygen as an electron acceptor.

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oxidase Any enzyme that catalyses oxidation–reduction reactions that involve the transfer of electrons to molecular oxygen.

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oxidase (oks-i-dayz) n. see oxidoreductase.