Cloned (Comment) | Organism |
---|---|
gene katA, DNA and amino acid sequence determination, comparison, and analysis | Bifidobacterium asteroides |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
cytoplasm | - |
Bifidobacterium asteroides | 5737 | - |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
55000 | - |
2 * 55000, SDS-PAGE | Bifidobacterium asteroides |
110000 | - |
about, gel filtration | Bifidobacterium asteroides |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
2 H2O2 | Bifidobacterium asteroides | - |
O2 + 2 H2O | - |
? | |
2 H2O2 | Bifidobacterium asteroides JCM 8230 | - |
O2 + 2 H2O | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Bifidobacterium asteroides | L8B3D7 | originally isolated from honeybee intestine, gene katA | - |
Bifidobacterium asteroides JCM 8230 | L8B3D7 | originally isolated from honeybee intestine, gene katA | - |
Purification (Comment) | Organism |
---|---|
active native enzyme by ultracentrifugation, streptomycin sulfate treatment, by drophobic interaction, anion exchange, and hydroxyapatite chromatography, gel filtration, followed by another step of anion exchange chromatography | Bifidobacterium asteroides |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
additional information | catalase activity absolutely depends on exposure to O2 and occurs in cells grown in medium containing a heme source, these cells show higher viability on exposure to H2O2, growth optimum 37°C | Bifidobacterium asteroides | - |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
6400 | - |
purified enzyme, pH 6,5, 37°C | Bifidobacterium asteroides |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
2 H2O2 | - |
Bifidobacterium asteroides | O2 + 2 H2O | - |
? | |
2 H2O2 | - |
Bifidobacterium asteroides JCM 8230 | O2 + 2 H2O | - |
? |
Subunits | Comment | Organism |
---|---|---|
homodimer | 2 * 55000, SDS-PAGE | Bifidobacterium asteroides |
Synonyms | Comment | Organism |
---|---|---|
haem catalase | - |
Bifidobacterium asteroides |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
40 | - |
- |
Bifidobacterium asteroides |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
6.5 | - |
- |
Bifidobacterium asteroides |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
heme | - |
Bifidobacterium asteroides |
Organism | Comment | Expression |
---|---|---|
Bifidobacterium asteroides | expression of the katA gene is induced in response to O2 exposure | up |