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Literature summary for 7.1.1.9 extracted from
- Cytochrome aa3 from the aerobic photoheterotroph Erythrobacter longus: purification, and enzymatic and molecular features (1987), J. Biochem., 102, 777-784.
Inhibitors
| Inhibitors | Comment | Organism | Structure |
|---|---|---|---|
| CN- | - |
Erythrobacter longus |  |
KM Value [mM]
| KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|
| 0.0047 | - |
ferrocytochrome c549 | Candida krusei cytochrome c | Erythrobacter longus | |
| 0.0065 | - |
ferrocytochrome c549 | - |
Erythrobacter longus | |
| 0.008 | - |
ferrocytochrome c550 | - |
Erythrobacter longus | |
| 0.011 | - |
ferrocytochrome c | horse heart cytochrome c | Erythrobacter longus | |
Metals/Ions
| Metals/Ions | Comment | Organism | Structure |
|---|---|---|---|
| additional information | enzyme does not contain Zn | Erythrobacter longus |
Molecular Weight [Da]
| Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
|---|---|---|---|
| 43000 | - |
2 * 43000, SDS-PAGE, 0.5% 2-mercaptoethanol | Erythrobacter longus |
| 92000 | - |
SDS-PAGE, no mercaptoethanol | Erythrobacter longus |
| 116000 | - |
gel filtration | Erythrobacter longus |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Erythrobacter longus | - |
aerobic photoheterotroph | - |
Purification (Commentary)
| Purification (Comment) | Organism |
|---|---|
| DEAE-cellulose, Sephacryl S-300 | Erythrobacter longus |
Specific Activity [micromol/min/mg]
| Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
|---|---|---|---|
| 8.4 | - |
oxidation of horse ferrocytochrome c | Erythrobacter longus |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| ferrocytochrome c + O2 | horse ferrocytochrome c | Erythrobacter longus | ferricytochrome c + H2O | - |
? | |
| ferrocytochrome c + O2 | cytochrome c550 and cytochrome c549 | Erythrobacter longus | ferricytochrome c + H2O | - |
? | |
| ferrocytochrome c + O2 | Candida krusei ferrocytochrome c | Erythrobacter longus | ferricytochrome c + H2O | - |
? | |
| ferrocytochrome c + O2 + H+ | - |
Erythrobacter longus | ferricytochrome c + H2O | - |
r | |
| ferrocytochrome c549 + O2 + H+ | - |
Erythrobacter longus | ferricytochrome c549 + H2O | - |
r | |
| ferrocytochrome c550 + O2 + H+ | - |
Erythrobacter longus | ferricytochrome c550 + H2O | - |
r | |
Subunits
| Subunits | Comment | Organism |
|---|---|---|
| dimer | 2 * 43000, SDS-PAGE, 0.5% 2-mercaptoethanol | Erythrobacter longus |
Turnover Number [1/s]
| Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|
| 1.3 | - |
ferrocytochrome c550 | - |
Erythrobacter longus | |
| 8 | - |
ferrocytochrome c549 | - |
Erythrobacter longus | |
| 24 | - |
ferrocytochrome c | Candida krusei cytochrome c | Erythrobacter longus | |
| 66 | - |
ferrocytochrome c | horse heart cytochrome c | Erythrobacter longus | |
Cofactor
| Cofactor | Comment | Organism | Structure |
|---|---|---|---|
| heme a | - |
Erythrobacter longus | |
| Heme a3 | - |
Erythrobacter longus | |
Ki Value [mM]
| Ki Value [mM] | Ki Value maximum [mM] | Inhibitor | Comment | Organism | Structure |
|---|---|---|---|---|---|
| 0.0007 | - |
CN- | horse cytochrome c as electron donor | Erythrobacter longus | |
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