Dioxygenation | definition of Dioxygenation by Medical dictionary
dioxygenases (redirected from Dioxygenation)
enzymes which incorporate both atoms of O2 into one substrate. Less common than mono-oxygenases. Important example is the 15-15′-dioxygenase enzyme in the small intestine which cleaves plant carotenoids containing provitamin A activity, such as β-carotene, into retinal. This enzyme is absent from felines, such as the cat, and is the reason cats are dependent on animal sources of vitamin A.
References in periodicals archive
The catabolism of phenanthrene by bacteria has been extensively studied, and, in general, phenanthrene is metabolized by initial dioxygenation
at the 3,4-position.
Arene hydroxylases: metalloenzymes catalyzing dioxygenation
of aromatic compounds.
2] arising from the dioxygenation
of arachidonic acid (1).