Characterization of ecdysone 20-monooxygenase activity in wandering stage larvae of Drosophilamelanogaster: Evidence for mitochondrial and microsomal cytochrome P-450 dependent systems

@article{Mitchell1986CharacterizationOE,
  title={Characterization of ecdysone 20-monooxygenase activity in wandering stage larvae of Drosophilamelanogaster: Evidence for mitochondrial and microsomal cytochrome P-450 dependent systems},
  author={M. J. Mitchell and Stan L. Smith},
  journal={Insect Biochemistry},
  year={1986},
  volume={16},
  pages={525-537}
}
Ecdysone 20-monooxygenase, the enzyme system that hydroxylates ecdysone to 20-hydroxyecdysone, was characterized in wandering stage larvae of Drosophila melanogaster using an in vitro radioassay in conjunction with analytical thin layer chromatography. 20-Hydroxyecdysone was confirmed to be the product of the enzyme radioassay system by high pressure liquid chromatography. The 20-monooxygenase was found to be most active in a 0.10 M phosphate buffer, pH 7.5, was inhibited by Ca2+, Mg2+ and Se4… Expand
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