Succinate Dehydrogenase

**Semantic type:** Amino Acid, Peptide, or Protein|Enzyme

**Definition:** A heterotetrameric enzyme complex found in the inner mitochondrial membrane. This protein complex catalyzes the oxidation of succinate and reduction of ubiquinone and plays a role in both the citric acid cycle and the electron transport chain.

**Synonyms:** - Complex II - EC 1.3.5.1 - Mitochondrial Complex II - Mitochondrial Respiratory Chain Complex II - Respiratory Complex II - SDH - SQR - Succinate-CoQ Reductase - Succinate-Coenzyme Q Reductase - Succinic Dehydrogenase