1.7.7.2: ferredoxin-nitrate reductase
This is an abbreviated version!
For detailed information about ferredoxin-nitrate reductase, go to the full flat file.
Reaction
Synonyms
assimilatory ferredoxin-nitrate reductase, Assimilatory nitrate reductase, C452_13229, dissimilatory nitrate reductase, EC 1.7.99.4, Fd-dependent nitrate reductase, Fd-NAS, NaR, narB, NarGH, NAS, NasB, nitrate (ferredoxin) reductase, nitrate reductase, reductase, nitrate (ferredoxin), respiratory nitrate reductase
ECTree
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Metals Ions
Metals Ions on EC 1.7.7.2 - ferredoxin-nitrate reductase
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Iron
iron-sulfur centre
KCl
Mn2+
-
stimulates activity about 50%, stimulates reaction rate and level of nitrite formation
Molybdenum
NaCl
Iron
-
enzyme contains Fe-S clusters. NarB codes for a 219-amino-acid-residue iron Rieske protein.
Iron
-
3Fe-4S cluster, cyclic voltammetry studies using enzyme protein films
Iron
-
contains 4 iron and 4 acid-labile sulfur atoms per enzyme molecule
Iron
-
the enzyme contains 3.6 moles iron per mole of enzyme
iron-sulfur centre
-
contains 4 iron and 4 acid-labile sulfur atoms per enzyme molecule, presence of iron-sulfur cluster
up to 2 M, the highest the salt concentration, the highest the activity value. Activity is significantly higher in the presence of KCl than in the presence of NaCl
KCl
-
maximum activity occurrs in the absence of NaCl and decreases with increasing concentrations of NaCl so that the activity is 46% of maximum when the enzyme is assayed in the presence of 4 M NaCl. Replacing NaCl with KCl does not significantly change the response
Molybdenum
-
enzyme contains 0.95 atom of molybdenum per enzyme molecule
Molybdenum
-
essential role in catalytic activity
Molybdenum
-
the enzyme contains 0.93 moles molybdenum per mole of enzyme
Molybdenum
1 atom of Mo and 2 molecules of ribonucleotide-conjugated molybdopterin per molecule of protein
Molybdenum
-
enzyme probably contains a bis-molybdopterin guanine dinucleotide
up to 2 M, the highest the salt concentration, the highest the activity value. Activity is significantly higher in the presence of KCl than in the presence of NaCl
NaCl
-
maximum activity occurrs in the absence of NaCl and decreases with increasing concentrations of NaCl so that the activity is 46% of maximum when the enzyme is assayed in the presence of 4 M NaCl. Replacing NaCl with KCl does not significantly change the response