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Copper amine oxidase, N2 domain This domain is the first or second structural domain in copper amine oxidases, it is known as the N2 domain. Its function is uncertain. The catalytic domain can be found in pfam01179. Copper amine oxidases are a ubiquitous and novel group of quinoenzymes that catalyze the oxidative deamination of primary amines to the corresponding aldehydes, with concomitant reduction of molecular oxygen to hydrogen peroxide. The enzymes are dimers of identical 70-90 kDa subunits, each of which contains a single copper ion and a covalently bound cofactor formed by the post-translational modification of a tyrosine side chain to 2,4,5-trihydroxyphenylalanine quinone (TPQ).
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Jiyao W et al.(2023). "The conserved domain database in 2023.",