Abstract
Due to their selectivity biocatalytic hydroxylations catalysed by monooxygenases or dioxygenases arouse considerable interest. The most studied and distributed type of monooxygenases are cytochromes P-450, which are a supergene family of proteins that catalyse the oxidation of lipophilic compounds through the insertion of 1 oxygen atom of O2 into the substrate. For biocatalytic processes those cytochromes deserve attention, are involved in the catabolism of nutrients in microorganisms or in the metabolism of physiological substrates in higher eucaryotes. Mammalian cytochromes P-450, which catalyse the oxidation of xenobiotics (synthetic drugs, pesticides, hazardous waste compounds, are hardly suitable for this purpose. Processes with immobilized cytochromes P-450 can be excluded. The use of wild or genetically transformed strains of microorganisms is a suitable way.
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