Activating Compound | Comment | Organism | Structure |
---|---|---|---|
D-ascorbate | 99% activity with D-ascorbate as compared to L-ascorbate | Cyanidium caldarium | |
desferrioxamine | 6fold increase of activity in the presence of 2.5 mM desferrioxamine | Cyanidium caldarium | |
HClO4 | 134% activity at 5% (v/v) HClO4 | Cyanidium caldarium | |
L-ascorbate | required for activity | Cyanidium caldarium | |
additional information | not activated by EDTA, dehydroascorbate, and phenyledediamine | Cyanidium caldarium | |
Tiron | almost as effective as desferrioxamine | Cyanidium caldarium |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
soluble | - |
Cyanidium caldarium | - |
- |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
protoheme + reduced ferredoxin [iron-sulfur] cluster + O2 + H+ | Cyanidium caldarium | - |
biliverdin IXalpha + Fe2+ + CO + oxidized ferredoxin [iron-sulfur] cluster + H2O | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Cyanidium caldarium | - |
- |
- |
Purification (Comment) | Organism |
---|---|
ammonium sulfate precipitation, Blue 2-Sepharose column chromatography, DEAE column chromatography, ferredoxin-Sepharose column chromatography, and Sephadex G-75 gel filtration | Cyanidium caldarium |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
0.00069 | - |
unpurified enzyme, at pH 7.6 and 42°C | Cyanidium caldarium |
0.1403 | - |
after 203fold purification, at pH 7.6 and 42°C | Cyanidium caldarium |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
protoheme + reduced ferredoxin [iron-sulfur] cluster + O2 + H+ | - |
Cyanidium caldarium | biliverdin IXalpha + Fe2+ + CO + oxidized ferredoxin [iron-sulfur] cluster + H2O | - |
? |
Synonyms | Comment | Organism |
---|---|---|
heme oxygenase | - |
Cyanidium caldarium |
Ho1 | - |
Cyanidium caldarium |
HY1 | - |
Cyanidium caldarium |