1.7.7.1: ferredoxin-nitrite reductase
This is an abbreviated version!
For detailed information about ferredoxin-nitrite reductase, go to the full flat file.
Reaction
+ 2 H2O + 3 oxidized ferredoxin = + 3 reduced ferredoxin + 7 H+
Synonyms
aNiR, assimilatory NiR, assimilatory nitrite reductase, CYME_CMG021C, CYME_CMJ117C, ferredoxin-nitrite reductase, ferredoxin:nitrite oxidoreductase, ferredoxin:nitrite reductase, Nii1, nii3, nii4, NiR, NiR1, NirA, nitrite reductase, NrfA, NrfH, reductase, ferredoxin-nitrite, SiRA, SirB
ECTree
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Substrates Products
Substrates Products on EC 1.7.7.1 - ferredoxin-nitrite reductase
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REACTION DIAGRAM
hydroxylamine + reduced ferredoxin
ammonia + H2O + oxidized ferredoxin
hydroxylamine can serve as an electron-accepting substrate for the enzyme and the product of hydroxylamine reduction is ammonia. Hydroxylamine, bound to the enzyme, can serve as a late intermediate during the reduction of nitrite to ammonia catalyzed by the enzyme
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-
?
hydroxylamine + reduced ferredoxin
NH3 + H2O + oxidized ferredoxin
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-
-
-
?
nitrite + reduced 2,6-dichlorophenolindophenol
NH3 + oxidized 2,6-dichlorophenolindophenol + H2O
-
less than 35% of maximum activity compared to reduced methyl viologen as electron donor
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-
?
nitrite + reduced phenazine methosulphate
NH3 + oxidized phenazine methosulphate + H2O
-
less than 35% of maximum activity compared to reduced methyl viologen as electron donor
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?
nitrite + reduced ferredoxin + H+
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-
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r
NH3 + H2O + oxidized ferredoxin
nitrite + reduced ferredoxin + H+
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r
NH3 + H2O + oxidized ferredoxin
nitrite + reduced ferredoxin + H+
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r
NH3 + H2O + oxidized ferredoxin
nitrite + reduced ferredoxin + H+
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r
NH3 + H2O + oxidized ferredoxin
nitrite + reduced ferredoxin + H+
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-
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r
NH3 + H2O + oxidized ferredoxin
nitrite + reduced ferredoxin + H+
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r
ammonia + 2 H2O + 6 oxidized Fdx2
-
Fdx2 i.e. Chlamydomonas reinhardtii plant-type isoform ferredoxin 2. Fdx2 is a more specific electron donor to NiR than ferredoxin
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-
?
nitrite + 6 reduced Fdx2
ammonia + 2 H2O + 6 oxidized Fdx2
Fdx2 i.e. Chlamydomonas reinhardtii plant-type isoform ferredoxin 2
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?
ammonia + 2 H2O + 6 oxidized ferredoxin
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?
nitrite + 6 reduced ferredoxin
ammonia + 2 H2O + 6 oxidized ferredoxin
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-
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?
nitrite + 6 reduced ferredoxin
ammonia + 2 H2O + 6 oxidized ferredoxin
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?
NH3 + 2 H2O + 6 oxidized ferredoxin
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?
nitrite + 6 reduced ferredoxin + 7 H+
NH3 + 2 H2O + 6 oxidized ferredoxin
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?
nitrite + 6 reduced ferredoxin + 7 H+
NH3 + 2 H2O + 6 oxidized ferredoxin
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-
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?
nitrite + 6 reduced ferredoxin + 7 H+
NH3 + 2 H2O + 6 oxidized ferredoxin
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assimilatory nitrite reductase
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?
nitrite + 6 reduced ferredoxin + 7 H+
NH3 + 2 H2O + 6 oxidized ferredoxin
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ferredoxin is almost as efficient as methyl viologen as electron donor
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?
nitrite + 6 reduced ferredoxin + 7 H+
NH3 + 2 H2O + 6 oxidized ferredoxin
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assimilatory nitrite reductase
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?
nitrite + 6 reduced ferredoxin + 7 H+
NH3 + 2 H2O + 6 oxidized ferredoxin
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ferredoxin is almost as efficient as methyl viologen as electron donor
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?
NH3 + FAD + H2O
-
50% of maximum activity compared to reduced methyl viologen as electron donor
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?
nitrite + FADH2
NH3 + FAD + H2O
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50% of maximum activity compared to reduced methyl viologen as electron donor
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?
nitrite + NADPH + H+
NH3 + NADP+ + H2O
-
10% of maximum activity compared to reduced methyl viologen as electron donor
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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second enzyme of photosynthetic nitrate-reducing system
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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other electron donor: methyl viologen
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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enzyme forms a covalent adduct with ferredoxin
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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other electron donor: benzyl viologen
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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other electron donor: methyl viologen
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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other electron donors: flavodoxin
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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enzyme can also catalyze the reduction of hydroxylamine to ammonia, at lower rate
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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second enzyme of photosynthetic nitrate-reducing system
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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NADPH
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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other electron donor: methyl viologen
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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second enzyme of photosynthetic nitrate-reducing system
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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other electron donor: methyl viologen
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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other electron donors: flavodoxin
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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enzyme can also catalyze the reduction of hydroxylamine to ammonia, at lower rate
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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methyl viologen can serve as a less effective electron donor
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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NADPH
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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other electron donor: methyl viologen
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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other electron donors: flavodoxin
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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not: flavin
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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other electron donor: benzyl viologen
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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other electron donor: methyl viologen
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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electrostatic interactions between ferredoxin and nitrite reductase play an important role in the reaction mechanism
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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other electron donors: flavodoxin
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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enzyme can also catalyze the reduction of hydroxylamine to ammonia, at lower rate
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-
?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
-
methyl viologen can serve as a less effective electron donor
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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second enzyme of photosynthetic nitrate-reducing system
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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second step of nitrate assimilation
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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second enzyme of photosynthetic nitrate-reducing system
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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other electron donor: methyl viologen
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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other electron donors: flavodoxin
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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enzyme can also catalyze the reduction of hydroxylamine to ammonia, at lower rate
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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NADH or NADPH can not serve as electron donors
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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second enzyme of photosynthetic nitrate-reducing system
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?
nitrite + reduced ferredoxin
ammonia + oxidized ferredoxin
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second step of nitrate assimilation
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?
nitrite + reduced ferredoxin
NH3 + H2O + oxidized ferredoxin
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a severe suppression of nitrite reductase by antisense technology drastically reduces the growth and development of transformed tobacco plants
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nitrite + reduced ferredoxin
NH3 + H2O + oxidized ferredoxin
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?
nitrite + reduced ferredoxin
NH3 + H2O + oxidized ferredoxin
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electrons from ferredoxin are first transferred to the [4Fe-4S] cluster, then to the siroheme and finally to the substrate
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?
NH3 + H2O + oxidized methyl viologen
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?
nitrite + reduced methyl viologen
NH3 + H2O + oxidized methyl viologen
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?
nitrite + reduced methyl viologen
NH3 + H2O + oxidized methyl viologen
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?
nitrite + reduced methyl viologen
NH3 + H2O + oxidized methyl viologen
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?
nitrite + reduced methyl viologen
NH3 + H2O + oxidized methyl viologen
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ferredoxin is almost as efficient as methyl viologen as electron donor
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?
nitrite + reduced methyl viologen
NH3 + H2O + oxidized methyl viologen
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ferredoxin is almost as efficient as methyl viologen as electron donor
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?
nitrite + reduced methyl viologen
NH3 + H2O + oxidized methyl viologen
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?
nitrite + reduced methyl viologen
NH3 + H2O + oxidized methyl viologen
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?
nitrite + reduced methyl viologen
NH3 + H2O + oxidized methyl viologen
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?
nitrite + reduced methyl viologen
NH3 + H2O + oxidized methyl viologen
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?
?
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presence of two separate one-electron redox couples with Em values of -255 mV and -390 mV, respcetively
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additional information
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enzyme additionally shows activity of sulfite reductase, EC 1.8.7.1
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additional information
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enzyme additionally shows activity of sulfite reductase, EC 1.8.7.1
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additional information
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enzyme additionally shows activity of sulfite reductase, EC 1.8.7.1
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additional information
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no activity with NADH as electron donor
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?
additional information
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no activity with NADH as electron donor
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?