Electron Transport Complex II

**Definition:** A flavoprotein oxidase complex that contains iron-sulfur centers. It catalyzes the oxidation of SUCCINATE to fumarate and couples the reaction to the reduction of UBIQUINONE to ubiquinol.

**Tree numbers:** - D05.500.562.750.249 - D08.811.600.250.500.750 - D08.811.600.250.875.249 - D08.811.682.660.385 - D08.811.682.830.249 - D12.776.157.427.374.375.909 - D12.776.331.199.750 - D12.776.543.277.500.750 - D12.776.543.277.875.249 - D12.776.556.579.374.375.141

**Synonyms:** - Succinate-Ubiquinone Oxidoreductase - Succinate-Ubiquinone Reductase - Succinate Dehydrogenase (Ubiquinone) - Succinate Dehydrogenase-Coenzyme Q Reductase - Succinate Dehydrogenase-CoQ Reductase - Succinate-Coenzyme Q Reductase - Succinate-Quinone Oxidoreductase - Succinate-Q Oxidoreductase