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CYP119 plus a Sulfolobus tokodaii strain 7 ferredoxin and 2-oxoacid:ferredoxin oxidoreductase constitute a high-temperature cytochrome P450 catalytic system.
- Source :
-
Journal of the American Chemical Society [J Am Chem Soc] 2002 Oct 30; Vol. 124 (43), pp. 12682-3. - Publication Year :
- 2002
-
Abstract
- The cytochrome P450 superfamily of enzymes catalyzes a broad range of oxidative processes involved in the metabolism of fatty acids, biosynthesis of sterols, and elimination of drugs and xenobiotics. Application of the unique properties of P450 enzymes as fine biocatalysts in biotechnology is limited due to their thermal instability and the requirement for auxiliary electron-donor proteins and cofactors. CYP119, a thermophilic P450 enzyme from Sulfolobus solfataricus, was characterized some time ago, but no high-temperature redox partners have been available for it. Here we report reconstitution of CYP119 with a novel high-temperature electron-donor system consisting of a ferredoxin and 2-oxoacid:ferredoxin oxidoreductase from Sulfolobus tokodaii strain 7 that, unlike all other known P450 electron-donor partners, utilizes coenzyme-A and pyruvic acid rather than NADH or NADPH as the source of electrons. The oxidation of lauric acid by the reconstituted system increased 16-fold as the temperature increased from 25 to 70 degrees C and was functional for more than 30 min at the higher temperature. This first in vitro high-temperature P450 catalytic system is a key step in the development of practical high-temperature monooxygenase systems.
- Subjects :
- Archaeal Proteins
Catalysis
Cytochrome P-450 Enzyme System genetics
Cytochrome P-450 Enzyme System metabolism
Ferredoxins metabolism
Ketone Oxidoreductases metabolism
Kinetics
Lauric Acids chemistry
Lauric Acids metabolism
NAD chemistry
NAD metabolism
NADP chemistry
NADP metabolism
Oxygenases genetics
Oxygenases metabolism
Pyruvic Acid chemistry
Pyruvic Acid metabolism
Sulfolobus chemistry
Cytochrome P-450 Enzyme System chemistry
Ferredoxins chemistry
Ketone Oxidoreductases chemistry
Oxygenases chemistry
Sulfolobus enzymology
Subjects
Details
- Language :
- English
- ISSN :
- 0002-7863
- Volume :
- 124
- Issue :
- 43
- Database :
- MEDLINE
- Journal :
- Journal of the American Chemical Society
- Publication Type :
- Academic Journal
- Accession number :
- 12392414
- Full Text :
- https://doi.org/10.1021/ja0282036