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Literature summary for 7.1.1.8 extracted from
- The small molecular mass ubiquinone-binding protein (QPc-9.5 kDa) in mitochondrial ubiquinol-cytochrome c reductase: isolation, ubiquinone-binding domain, and immunoinhibition (1990), Biochemistry, 29, 4618-4626.
KM Value [mM]
| KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|
| 0.038 | - |
ubiquinol-10 | - |
Bos taurus |  |
Localization
| Localization | Comment | Organism | GeneOntology No. | Textmining |
|---|---|---|---|---|
| mitochondrion | mitochondrial membrane, transmembranous subunit QPc-9.5 kDa, more mass on the matrix side of the membrane | Bos taurus | 5739 | - |
Molecular Weight [Da]
| Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
|---|---|---|---|
| 9500 | - |
subunit ubiquinone-binding protein QPc, SDS-PAGE | Bos taurus |
Natural Substrates/ Products (Substrates)
| Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| ubiquinone-10 + ferricytochrome c | Bos taurus | - |
ubiquinol-10 + ferrocytochrome c + 2 H+ | - |
? | |
| ubiquinone-10 + ferricytochrome c | Cereibacter sphaeroides | - |
ubiquinol-10 + ferrocytochrome c + 2 H+ | - |
? | |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Bos taurus | - |
- |
- |
| Cereibacter sphaeroides | - |
formerly Rhodopseudomonas sphaeroides | - |
Purification (Commentary)
| Purification (Comment) | Organism |
|---|---|
| ubiquinone-binding protein QPc-9.5 kDa | Bos taurus |
Source Tissue
| Source Tissue | Comment | Organism | Textmining |
|---|---|---|---|
| heart | - |
Bos taurus | - |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| ubiquinol + 2 ferricytochrome c | - |
Bos taurus | ubiquinone + 2 ferrocytochrome c + 2 H+ | - |
? | |
| ubiquinol + 2 ferricytochrome c | - |
Cereibacter sphaeroides | ubiquinone + 2 ferrocytochrome c + 2 H+ | - |
? | |
| ubiquinol 10 + cytochrome c | - |
Bos taurus | ubiquinone 10 + reduced cytochrome c | - |
? | |
| ubiquinone-10 + ferricytochrome c | - |
Bos taurus | ubiquinol-10 + ferrocytochrome c + 2 H+ | - |
? | |
| ubiquinone-10 + ferricytochrome c | - |
Cereibacter sphaeroides | ubiquinol-10 + ferrocytochrome c + 2 H+ | - |
? | |
Subunits
| Subunits | Comment | Organism |
|---|---|---|
| heptamer | - |
Bos taurus |
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Release 2023.1 (January 2023)
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