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The Oxygen Dilemma: A Severe Challenge for the Application of Monooxygenases?
Author(s) -
Holtmann Dirk,
Hollmann Frank
Publication year - 2016
Publication title -
chembiochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.05
H-Index - 126
eISSN - 1439-7633
pISSN - 1439-4227
DOI - 10.1002/cbic.201600176
Subject(s) - monooxygenase , chemistry , oxygen , dilemma , catalysis , biochemical engineering , combinatorial chemistry , enzyme , biochemistry , organic chemistry , cytochrome p450 , philosophy , epistemology , engineering
Monooxygenases are promising catalysts because they in principle enable the organic chemist to perform highly selective oxyfunctionalisation reactions that are otherwise difficult to achieve. For this, monooxygenases require reducing equivalents, to allow reductive activation of molecular oxygen at the enzymes' active sites. However, these reducing equivalents are often delivered to O 2 either directly or via a reduced intermediate (uncoupling), yielding hazardous reactive oxygen species and wasting valuable reducing equivalents. The oxygen dilemma arises from monooxygenases' dependency on O 2 and the undesired uncoupling reaction. With this contribution we hope to generate a general awareness of the oxygen dilemma and to discuss its nature and some promising solutions.