succinate dehydrogenase (ubiquinone)

succinate dehydrogenase (ubiquinone)
suc·ci·nate de·hy·dro·gen·ase (ubiq·ui·none) (sukґsin-āt de-hiґdro-jən-ās u-bikґwin-ōn″) [EC 1.3.5.1] an enzyme of the oxidoreductase class that catalyzes the oxidation of succinate to fumarate, using ubiquinone as an electron acceptor. It occurs in mitochondria as a membrane-bound complex, an iron-containing flavoprotein (FAD) with an associated iron-sulfur protein. The reaction is part of the tricarboxylic acid cycle (see illustration under cycle).

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  • Succinate dehydrogenase — (ubiquinone) Subunits: SdhA, SdhB, SdhC and SdhD Identifiers EC number …   Wikipedia

  • succinate dehydrogenase — n an iron containing flavoprotein enzyme that catalyzes often reversibly the dehydrogenation of succinic acid to fumaric acid in the presence of a hydrogen acceptor and that is widely distributed esp. in animal tissues, bacteria, and yeast called …   Medical dictionary

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  • Oxidative phosphorylation — The electron transport chain in the mitochondrion is the site of oxidative phosphorylation in eukaryotes. The NADH and succinate generated in the citric acid cycle are oxidized, releasing energy to power the ATP synthase. Oxidative… …   Wikipedia

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  • Citric acid cycle — Overview of the citric acid cycle The citric acid cycle also known as the tricarboxylic acid cycle (TCA cycle), the Krebs cycle, or the Szent Györgyi Krebs cycle[1] …   Wikipedia

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  • metabolism — /meuh tab euh liz euhm/, n. 1. Biol., Physiol. the sum of the physical and chemical processes in an organism by which its material substance is produced, maintained, and destroyed, and by which energy is made available. Cf. anabolism, catabolism …   Universalium

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