title: [Succinate-ubiquinone reductase site of the respiratory chain].
abstract: Data on succinate-ubiquinone reductase are critically reviewed. The structural and catalytic properties of succinate dehydrogenase and succinate-ubiquinone reductase are compared. The redox components, active centers and proteins involved in the enzyme interaction with ubiquinone are described. Some structural and kinetic features of the succinate-ubiquinone reductase as the respiratory chain component and feasible mechanisms of regulation of the succinate-ubiquinone reductase activity are discussed.
mesh_terms: D000818:Animals; D001665:Binding Sites; D004579:Electron Transport; D042963:Electron Transport Complex II; D008931:Mitochondria, Muscle / Q000201:enzymology*; D009097:Multienzyme Complexes / Q000378:metabolism*; D010084:Oxidation-Reduction; D010088:Oxidoreductases / Q000378:metabolism*; D013379:Substrate Specificity; D013385:Succinate Dehydrogenase / Q000378:metabolism*
chemical_list: D009097:Multienzyme Complexes; D010088:Oxidoreductases; D042963:Electron Transport Complex II; D013385:Succinate Dehydrogenase
vernacular_title: Suktsinat-ubikhinon reduktaznyĭ uchastok dykhatel'noĭ tsepi.