An oxidoreductase that incorporates two atoms of oxygen (from one molecule of O2) into the (reduced) substrate.

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di·oxy·gen·ase (di-okґsə-jən-ās) a term used in the recommended names of oxygenases specifically catalyzing incorporation of both atoms of oxygen from O2 into a single substrate [EC 1.13.11]. A CC bond is frequently cleaved, and most of these enzymes require either iron or copper for activity.

Medical dictionary. 2011.

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