Electron Transport Complex III

A multisubunit enzyme complex that contains CYTOCHROME B GROUP; CYTOCHROME C1; and iron-sulfur centers. It catalyzes the oxidation of ubiquinol to UBIQUINONE, and transfers the electrons to CYTOCHROME C. In MITOCHONDRIA the redox reaction is coupled to the transport of PROTONS across the inner mitochondrial membrane.

Also Known As:

Coenzyme Q-Cytochrome-c Reductase; Complex III; Coenzyme QH2-Cytochrome-c Reductase; Core I Protein, UCCreductase; Core I Protein, Ubiquinol-Cytochrome c Reductase; Core II Protein, UCCreductase; Core II Protein, Ubiquinol-Cytochrome c Reductase; Cytochrome b-c2 Oxidoreductase; Cytochrome bc1; Dihydroubiquinone-Cytochrome-c Reductase; QH(2)-Cytochrome-c Reductase; QH(2)-Ferricytochrome-c Oxidoreductase; Ubihydroquinone-Cytochrome-c Reductase; Ubiquinol-Cytochrome c Reductase; Ubiquinone-Cytochrome b-c2 Oxidoreductase; Coenzyme Q Cytochrome c Reductase; Coenzyme QH2 Cytochrome c Reductase; Core I Protein, Ubiquinol Cytochrome c Reductase; Core II Protein, Ubiquinol Cytochrome c Reductase; Cytochrome b c2 Oxidoreductase; Dihydroubiquinone Cytochrome c Reductase; Reductase, Ubiquinol-Cytochrome c; Ubihydroquinone Cytochrome c Reductase; Ubiquinol Cytochrome c Reductase; Ubiquinone Cytochrome b c2 Oxidoreductase; Cytochrome bc1 Complex; Ubiquinol-Cytochrome-c Reductase; Ubiquinol-ferricytochrome-c oxidoreductase

Macromolecular Substances: 97
- Multiprotein Complexes: 125
  - Multienzyme Complexes: 8
    - Succinate Cytochrome c Oxidoreductase: 31
      - Electron Transport Complex III: 458
Enzymes and Coenzymes: 1
- Enzymes: 152586
  - Oxidoreductases: 13671
    - Succinate Cytochrome c Oxidoreductase: 31
      - Electron Transport Complex III: 458
  - Multienzyme Complexes: 8
    - Electron Transport Chain Complex Proteins
      - Succinate Cytochrome c Oxidoreductase: 31
        Electron Transport Complex III: 458
Amino Acids, Peptides, and Proteins: 1
- Proteins: 484843
  - Carrier Proteins: 12999
    - Membrane Transport Proteins: 589
      - Ion Pumps: 61
        Cation Transport Proteins: 22
        Proton Pumps: 415
        Electron Transport Complex III: 458
    - Iron-Binding Proteins: 172
      - Nonheme Iron Proteins
        Iron-Sulfur Proteins: 42
        Electron Transport Complex III: 458
  - Membrane Proteins: 10078
    - Membrane Transport Proteins: 589
      - Ion Pumps: 61
        Cation Transport Proteins: 22
        Proton Pumps: 415
        Electron Transport Complex III: 458
    - Electron Transport Chain Complex Proteins
      - Succinate Cytochrome c Oxidoreductase: 31
        Electron Transport Complex III: 458
  - Metalloproteins: 164
    - Iron-Binding Proteins: 172
      - Nonheme Iron Proteins
        Iron-Sulfur Proteins: 42
        Electron Transport Complex III: 458

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