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Catalytic Amine Oxidation under Ambient Aerobic Conditions: Mimicry of Monoamine Oxidase B

The flavoenzyme monoamine oxidase (MAO) regulates mammalian behavioral patterns by modulating neurotransmitters such as adrenaline and serotonin. The mechanistic basis which underpins this enzyme is far from agreed upon. Reported herein is that the combination of a synthetic flavin and alloxan gener...

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Published in:Angewandte Chemie 2015-07, Vol.127 (31), p.9125-9128
Main Authors: Murray, Alexander T., Dowley, Myles J. H., Pradaux-Caggiano, Fabienne, Baldansuren, Amgalanbaatar, Fielding, Alistair J., Tuna, Floriana, Hendon, Christopher H., Walsh, Aron, Lloyd-Jones, Guy C., John, Matthew P., Carbery, David R.
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cited_by cdi_FETCH-LOGICAL-c2784-830220b2528e27fafc861d4b0887296242616b5fa93bcd67658bf85e6bfcc85d3
cites cdi_FETCH-LOGICAL-c2784-830220b2528e27fafc861d4b0887296242616b5fa93bcd67658bf85e6bfcc85d3
container_end_page 9128
container_issue 31
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container_title Angewandte Chemie
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creator Murray, Alexander T.
Dowley, Myles J. H.
Pradaux-Caggiano, Fabienne
Baldansuren, Amgalanbaatar
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Hendon, Christopher H.
Walsh, Aron
Lloyd-Jones, Guy C.
John, Matthew P.
Carbery, David R.
description The flavoenzyme monoamine oxidase (MAO) regulates mammalian behavioral patterns by modulating neurotransmitters such as adrenaline and serotonin. The mechanistic basis which underpins this enzyme is far from agreed upon. Reported herein is that the combination of a synthetic flavin and alloxan generates a catalyst system which facilitates biomimetic amine oxidation. Mechanistic and electron paramagnetic (EPR) spectroscopic data supports the conclusion that the reaction proceeds through a radical manifold. This data provides the first example of a biorelevant synthetic model for monoamine oxidase B activity. MAO‐Nachahmer: Ein Modellflavin wird als Mimetikum der Monoaminoxidase B (MAO‐B) unter aeroben und Umgebungsbedingungen eingeführt. Kinetik‐ und EPR‐Studien geben Einblick in den Mechanismus: Ein geschwindigkeitsbestimmender Wasserstoffatomtransfer vom Amin zum Flavinakzeptor wird sowohl für das Modellsystem als auch für MAO‐B vorgeschlagen.
doi_str_mv 10.1002/ange.201503654
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subjects Amine
Enzyme
EPR-Spektroskopie
Oxidation
Reaktionsmechanismen
title Catalytic Amine Oxidation under Ambient Aerobic Conditions: Mimicry of Monoamine Oxidase B
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