Canadian Medical Guide > Chemicals and Drugs > Enzymes and Coenzymes > Enzymes > Oxidoreductases > Oxidoreductases Acting on CH-CH Group Donors Terms and Definitions

Oxidoreductases Acting on CH-CH Group Donors

Medical Definition:	A subclass of enzymes which includes all dehydrogenases acting on carbon-carbon bonds. This enzyme group includes all the enzymes that introduce double bonds into substrates by direct dehydrogenation of carbon-carbon single bonds.
Guide Notes:	GEN; prefer specifics
CAS Number:	EC 1.3.-
Previously Indexed:	Oxidoreductases (1963-2003)

Oxidoreductases Acting on CH-CH Group Donors Categories.

	15-Oxoprostaglandin 13-Reductase - (5Z)-(15S)-11 alpha-Hydroxy-9,15-dioxoprostanoate:NAD(P)+ delta(13)-oxidoreductase. An enzyme active in prostaglandin E and F catabolism. It catalyzes the reduction of the double bond at the 13-14 position of the 15-ketoprostaglandins and uses NADPH as cofactor. EC 1.3.1.48.
	Acyl-CoA Dehydrogenases - Enzymes that catalyze the first step in the beta-oxidation of FATTY ACIDS.
	Cholestenone 5 alpha-Reductase - An oxidoreductase that catalyzes the the conversion of compounds that contain 5-alpha-cholestan-3-one into the cholest-4-en-3-one dervative. It plays an important role in the conversion of TESTOSTERONE into DIHYDROTESTOSTERONE and PROGESTERONE into DIHYDROPROGESTERONE.
	Coproporphyrinogen Oxidase - One of the enzymes active in heme biosynthesis. It catalyzes the oxidative decarboxylation of coproporphyrinogen III to protoporphyrinogen III by the conversion of two propionic acid groups to two vinyl groups. It can act under both aerobic and anaerobic conditions. EC 1.3.3.3.
	Dihydroorotate Oxidase - An enzyme that in the course of pyrimidine biosynthesis, catalyzes the oxidation of dihydro-orotic acid to orotic acid utilizing oxygen as the electron acceptor. This enzyme is a flavoprotein which contains both FLAVIN-ADENINE DINUCLEOTIDE and FLAVIN MONONUCLEOTIDE as well as iron-sulfur centers. EC 1.3.3.1.
	Dihydrouracil Dehydrogenase (NADP) - An oxidoreductase involved in pyrimidine base degradation. It catalyzes the catabolism of THYMINE; URACIL and the chemotherapeutic drug, 5-FLUOROURACIL.
	Squalene Synthetase - Catalyzes the rearrangement and reduction of the cyclopropane compound, presqualene pyrophosphate to form squalene, with NADPH as the coenzyme.
	Testosterone 5-alpha-Reductase

Oxidoreductases Acting on CH-CH Group Donors Medical Definitions and Terms

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