Cloned (Comment) | Organism |
---|---|
expression in Escherichia coli | Aeropyrum pernix |
Crystallization (Comment) | Organism |
---|---|
purified recombinant apo, Mn-bound and Fe-bound enzyme, in presence of PEG, 2-3 days, X-ray diffraction structure determination and analysis at 1.56 A, 1.35 A, and 1.48 A, respectively | Aeropyrum pernix |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Fe2+ | the SOD is active with Fe2+ and Mn2+, Fe2+ activates 6fold, binding structure, overview | Aeropyrum pernix | |
Mn2+ | the SOD is active with Fe2+ and Mn2+, Mn2+ activates 20fold, binding structure, overview | Aeropyrum pernix |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
24577 | - |
in crystals, 4 * 24577, sequence calculation and gel filtration | Aeropyrum pernix |
24577 | - |
in solution, 2 * 24577, sequence calculation and gel filtration | Aeropyrum pernix |
57000 | - |
in solution, gel filtration | Aeropyrum pernix |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
2 O2.- + 2 H+ + | Aeropyrum pernix | the SOD-catalyzed reaction proceeds through a redox cycle of metal ions, active site geometry, overview | O2 + H2O2 | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Aeropyrum pernix | Q9Y8H8 | - |
- |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
27.5 | - |
apoenzyme, pH not specified in the publication, 37°C | Aeropyrum pernix |
160 | - |
Fe2+-bound enzyme, pH not specified in the publication, 37°C | Aeropyrum pernix |
230 | - |
Fe2+-bound enzyme, pH not specified in the publication, 70°C | Aeropyrum pernix |
550 | - |
Mn2+-bound enzyme, pH not specified in the publication, 37°C | Aeropyrum pernix |
2700 | - |
Mn2+-bound enzyme, pH not specified in the publication, 70°C | Aeropyrum pernix |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
2 O2.- + 2 H+ + | - |
Aeropyrum pernix | O2 + H2O2 | - |
? | |
2 O2.- + 2 H+ + | the SOD-catalyzed reaction proceeds through a redox cycle of metal ions, active site geometry, overview | Aeropyrum pernix | O2 + H2O2 | - |
? |
Subunits | Comment | Organism |
---|---|---|
homodimer | in solution, 2 * 24577, sequence calculation and gel filtration | Aeropyrum pernix |
homotetramer | in crystals, 4 * 24577, sequence calculation and gel filtration | Aeropyrum pernix |
Synonyms | Comment | Organism |
---|---|---|
cambialistic superoxide dismutase | - |
Aeropyrum pernix |
SOD | - |
Aeropyrum pernix |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
70 | - |
- |
Aeropyrum pernix |
Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|
85 | - |
the enzyme is stable in aqueous solution at temperatures up to 85°C | Aeropyrum pernix |
General Information | Comment | Organism |
---|---|---|
physiological function | superoxide dismutases play a protective role against oxidative stress by catalyzing disproportionation of the superoxide anion radical to hydrogen peroxide and dioxygen | Aeropyrum pernix |