EC Number | KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|---|
1.8.7.1 | 0.011 | - |
sulfite | 63K enzyme, reduced methyl viologen as electron donor | Spinacia oleracea | |
1.8.7.1 | 0.012 | - |
sulfite | 69K enzyme, reduced methyl viologen as electron donor | Spinacia oleracea | |
1.8.7.1 | 0.019 | - |
reduced ferredoxin | 69K enzyme | Spinacia oleracea | |
1.8.7.1 | 0.021 | - |
sulfite | 63K enzyme, ferredoxin als electeron donor | Spinacia oleracea | |
1.8.7.1 | 0.021 | - |
reduced ferredoxin | 63K enzyme | Spinacia oleracea | |
1.8.7.1 | 0.025 | - |
sulfite | 69K enzyme, ferredoxin as electron donor | Spinacia oleracea |
EC Number | Metals/Ions | Comment | Organism | Structure |
---|---|---|---|---|
1.8.7.1 | 4Fe-4S | 1 mol per mol subunit | Spinacia oleracea |
EC Number | Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|---|
1.8.7.1 | 63000 | - |
2 * 63000, 63K form of the enzyme, 50 mM phosphate buffer pH 7.7, 20°C, SDS-PAGE | Spinacia oleracea |
1.8.7.1 | 69000 | - |
2 * 69000, 69K form of the enzyme, probably partially processed to a 63000 Da species, 50 mM phosphate buffer pH 7.7, 20°C, SDS-PAGE | Spinacia oleracea |
1.8.7.1 | 112000 | 119000 | 63K enzyme, equilibrium sedimentation, gel filtration | Spinacia oleracea |
1.8.7.1 | 134000 | - |
69K enzyme, equilibrium sedimentation | Spinacia oleracea |
EC Number | Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|---|
1.8.7.1 | sulfite + reduced ferredoxin | Spinacia oleracea | - |
hydrogen sulfide + oxidized ferredoxin + H2O | - |
? |
EC Number | Organism | UniProt | Comment | Textmining |
---|---|---|---|---|
1.8.7.1 | Spinacia oleracea | - |
- |
- |
EC Number | Purification (Comment) | Organism |
---|---|---|
1.8.7.1 | - |
Spinacia oleracea |
EC Number | Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|---|
1.8.7.1 | 8.9 | - |
69K enzyme | Spinacia oleracea |
1.8.7.1 | 10.3 | - |
63K enzyme | Spinacia oleracea |
EC Number | Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|---|
1.8.7.1 | sulfite + reduced ferredoxin | - |
Spinacia oleracea | hydrogen sulfide + oxidized ferredoxin + H2O | - |
? | |
1.8.7.1 | sulfite + reduced ferredoxin | reduced methyl viologen as electron donor also | Spinacia oleracea | hydrogen sulfide + oxidized ferredoxin + H2O | - |
? | |
1.8.7.1 | sulfite + reduced ferredoxin + H+ | - |
Spinacia oleracea | hydrogen sulfide + oxidized ferredoxin + H2O | - |
r |
EC Number | Subunits | Comment | Organism |
---|---|---|---|
1.8.7.1 | dimer | 2 * 69000, 69K form of the enzyme, probably partially processed to a 63000 Da species, 50 mM phosphate buffer pH 7.7, 20°C, SDS-PAGE | Spinacia oleracea |
1.8.7.1 | dimer | 2 * 63000, 63K form of the enzyme, 50 mM phosphate buffer pH 7.7, 20°C, SDS-PAGE | Spinacia oleracea |
EC Number | Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|---|
1.8.7.1 | 22 | - |
enzyme assay, reduced methyl viologen as electron donor | Spinacia oleracea |
EC Number | Cofactor | Comment | Organism | Structure |
---|---|---|---|---|
1.8.7.1 | siroheme | 1 mol per mol subunit, in the high-spin Fe3+ state in the reduced enzyme | Spinacia oleracea |