Oxygen activation by cytochrome P450 monooxygenase

Product autofluorescence activation in the cytochrome P450 monooxygenase system.

The relative increase of the 7-ethoxycoumarin-O-deethylase and the 6,7-dimethoxycoumarin-O-demethylase activities were found 93 and 236% using a reconstituted cytochrome P4502B1:NADPH-P450 reductase system by adding to the reaction mixtures their own products. The assays were irradiated during the reactions with the excitation wavelength maximum of their products umbelliferone (lambda E = 365 n...

Biosynthesis, Encodes a Putative Cytochrome P450 Monooxygenase

Phytoalexins are low molecular weight antimicrobial compounds that are synthesized in response to pathogen attack. The phytoalexin camalexin, an indole derivative, is produced by Arabidopsis in response to infection with the bacterial pathogen Pseudomonas syringae. The phytoalexin deficient 3 ( pad3 ) mutation, which causes a defect in camalexin production, has no effect on resistance to P. syr...

Cytochrome P450 Monooxygenase-Mediated Resistance to Insecticides

Insecticide resistance is one of the major obstacles to the control of agriculturally important arthropod pests. Resistance results in increased application frequencies, increased dosages, decreased yields, environmental damage, and outbreaks of human and animal diseases when vectors cannot be controlled. The World Health Organization has called insecticide resistance "the biggest single obstac...

Cytochrome P450 monooxygenase system in echinoderms.

The results of a limited number of studies on echinoderms provide evidence for the presence of a cytochrome P450 monooxygenase system in representatives of three classes of the phylum Echinodermata: the asteroids (sea stars), holothuroids (sea cucumbers) and echinoids (sea urchins). The monooxygenase system has been demonstrated to be involved in the metabolism of xenobiotic compounds, but is a...

Protein engineering of the cytochrome P450 monooxygenase from Bacillus megaterium.