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At present, copper/quinone-containing amine oxidases (EC 1.4.3.6) are very intensively studied group of enzymes. They are contained in most of living organisms, taking part in significant physiological processes. They use copper and topa quinone (2,4,5-trihydroxyphenylalanine quinone) derived from its tyrosine precursor as the redox cofactor. Substantial progress in the study of these enzymes has...
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