Abstract

KREBS, B.; MERKEL, M.  and  ROMPEL, A.. Catechol oxidase and biomimetic approaches. An. Asoc. Quím. Argent. [online]. 2004, vol.92, n.1-3, pp.1-15. ISSN 0365-0375.

Transport, activation, and metabolism of dioxygen are very important processes in many living organisms. These functions are often assigned to metalloproteins containing iron or copper. Especially the iron containing heme proteins present the most well-known examples like hemoglobin and myoglobin (oxygen transport), cytochrome c oxidase (activation of dioxygen and oxidation) or peroxidase (elimination of radical intermediates). Apart from heme species metalloproteins with a dinuclear metal center containing iron or copper serve as biological alternatives. Examples for oxygen transport are hemerythrin containing iron and hemocyanin containing copper. These dinuclear centers also appear in proteins with enzymatic activity. The copper containing species are called copper-type 3 proteins.

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