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Literature summary for 1.3.5.1 extracted from
- Electron-transfer complexes of Ascaris suum muscle mitochondria. III. Composition and fumarate reductase activity of complex II (1988), Biochim. Biophys. Acta, 935, 130-140.
Activating Compound
| Activating Compound | Comment | Organism | Structure |
|---|---|---|---|
| cytochrome b-558 | - |
Ascaris suum |
Localization
| Localization | Comment | Organism | GeneOntology No. | Textmining |
|---|---|---|---|---|
| mitochondrion | - |
Rattus norvegicus | 5739 | - |
| mitochondrion | inner membrane | Bos taurus | 5739 | - |
| mitochondrion | inner membrane | Ascaris suum | 5739 | - |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Ascaris suum | - |
succinate dehydrogenase | - |
| Bos taurus | - |
- |
- |
| Rattus norvegicus | - |
- |
- |
Source Tissue
| Source Tissue | Comment | Organism | Textmining |
|---|---|---|---|
| heart | - |
Bos taurus | - |
| liver | - |
Rattus norvegicus | - |
| muscle | - |
Ascaris suum | - |
Specific Activity [micromol/min/mg]
| Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
|---|---|---|---|
| 0.0547 | - |
egg mitochondria | Ascaris suum |
| 0.135 | - |
heart mitochondria | Bos taurus |
| 0.136 | - |
muscle mitochondria | Ascaris suum |
| 0.154 | - |
liver mitochondria | Rattus norvegicus |
| 2.04 | - |
isolated complex II | Ascaris suum |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| succinate + ubiquinone | - |
Bos taurus | fumarate + ubiquinol | - |
? |  |
| succinate + ubiquinone | - |
Ascaris suum | fumarate + ubiquinol | - |
? | |
Subunits
| Subunits | Comment | Organism |
|---|---|---|
| tetramer | - |
Bos taurus |
| tetramer | - |
Ascaris suum |
pH Range
| pH Minimum | pH Maximum | Comment | Organism |
|---|---|---|---|
| 6.5 | - |
decrease of activity below | Ascaris suum |
| 8.5 | - |
80% of maximal activity | Ascaris suum |
pH Stability
| pH Stability | pH Stability Maximum | Comment | Organism |
|---|---|---|---|
| 8.5 | - |
fumarate reductase activity decreases to 80% | Ascaris suum |
Cofactor
| Cofactor | Comment | Organism | Structure |
|---|---|---|---|
| cytochrome b | - |
Bos taurus | |
| cytochrome b | cytochrome b-558, composed of two hydrophobic polypeptides with molecular masses of 17.2 and 12.5 kDa, which correspond to the two small subunits of complex II | Ascaris suum |
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