Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Fe | several ironsulfur clusters | Pseudomonas chlororaphis | |
Mo | the enzyme possesses a molybdopterin guanine dinucleotide active center. Two forms of the molybdenum center, high- and low-pH, are detectable by electron paramagnetic resonance spectroscopy | Pseudomonas chlororaphis |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
24000 | - |
x * 129000 (alpha) + x * 66000 (beta) + x * 24000 (gamma), SDS-PAGE | Pseudomonas chlororaphis |
66000 | - |
x * 129000 (alpha) + x * 66000 (beta) + x * 24000 (gamma), SDS-PAGE | Pseudomonas chlororaphis |
129000 | - |
x * 129000 (alpha) + x * 66000 (beta) + x * 24000 (gamma), SDS-PAGE | Pseudomonas chlororaphis |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Pseudomonas chlororaphis | - |
DSM 50135 | - |
Purification (Comment) | Organism |
---|---|
- |
Pseudomonas chlororaphis |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
2.6 | - |
- |
Pseudomonas chlororaphis |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
nitrate + menaquinol | only the membrane-bound, not the solubilized form of the enzyme, can accept electrons from a menaquinone analog, menadione, whereas both forms can accept electrons from methylviologen. In vivo quinol interacts directly with the gamma subunit that is lost during solubilization | Pseudomonas chlororaphis | nitrite + menaquinone + H2O | - |
? | |
nitrate + reduced methyl viologen | - |
Pseudomonas chlororaphis | nitrite + oxidized methyl viologen + H2O | - |
? |
Subunits | Comment | Organism |
---|---|---|
? | x * 129000 (alpha) + x * 66000 (beta) + x * 24000 (gamma), SDS-PAGE | Pseudomonas chlororaphis |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
bis(molybdopterin guanine dinucleotide)molybdenum cofactor | the enzyme possesses a molybdopterin guanine dinucleotide active center. Two forms of the molybdenum center, high- and low-pH, are detectable by electron paramagnetic resonance spectroscopy | Pseudomonas chlororaphis | |
cytochrome c | the isolated preparation contains heme c in a sub-stoichiometric amount with the ability to relay electrons to the molybdenum center, suggesting that this nitrate reductase may contain heme c instead of the heme b usually found in this class of enzymes | Pseudomonas chlororaphis |