1.7.2.2: nitrite reductase (cytochrome; ammonia-forming)
This is an abbreviated version!
For detailed information about nitrite reductase (cytochrome; ammonia-forming), go to the full flat file.
Word Map on EC 1.7.2.2
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1.7.2.2
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six-electron
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desulfovibrio
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dissimilatory
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succinogenes
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wolinella
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nitrosomonas
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ammonification
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thioalkalivibrio
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nitratireducens
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desulfuricans
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chromatium
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flavorubredoxin
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deleyianum
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menaquinol
-
hydrogenobacter
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pentahaem
-
hildenborough
-
sulfurospirillum
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ferrocytochrome
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flavohemoglobins
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cxxch
-
analysis
- 1.7.2.2
-
six-electron
- desulfovibrio
-
dissimilatory
- succinogenes
-
wolinella
- nitrosomonas
-
ammonification
- thioalkalivibrio
- nitratireducens
- desulfuricans
- chromatium
- flavorubredoxin
- deleyianum
- menaquinol
- hydrogenobacter
-
pentahaem
- hildenborough
- sulfurospirillum
- ferrocytochrome
- flavohemoglobins
-
cxxch
- analysis
Reaction
Synonyms
ammonia-forming cytochrome c nitrite reductase, ccNiR, CcuHao, CfHao, CmHao, cNiR, cytochrome c NiR, cytochrome c nitrite reductase, cytochrome c nitrite reductase complex, cytochrome c-552, epsilonHao, epsilonproteobacterial hydroxylamine oxidoreductase, Glov_1042, haoA, hexaheme c-type cytochrome, More, multihaem c NiR, multiheme cytochrome c nitrite reductase, multiheme nitrite reductase, NiR, NiR cytochrome c552, nirB, NirC, nitrite reductase, NpHao, NrfA, NrfA2NrfH complex, NrfHA, octahaem cytochrome c nitrite reductase, SCO2486, SCO2488, TvNiR, WS0969
ECTree
1.7.2.2 nitrite reductase (cytochrome; ammonia-forming)Advanced search results
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results (Natural Substrates Products
Natural Substrates Products on EC 1.7.2.2 - nitrite reductase (cytochrome; ammonia-forming)
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NATURAL SUBSTRATE 
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate)
(Substrate)
LITERATURE
(Substrate)
(Substrate)
COMMENTARY
(Product)
(Product)
LITERATURE
(Product)
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
r=reversible
ir=irreversible
?=not specified
nitrite + 4 ferrocytochrome c + 5 H+
hydroxylamine + H2O + 4 ferricytochrome c
-
cf. EC 1.7.2.6
-
-
?
nitrite + acceptor
NH3 + oxidized acceptor + H2O
Q5F2I3
-
-
-
?
NO + 5 ferrocytochrome c + 5 H+
NH3 + H2O + 5 ferricytochrome c
-
important role for the enzyme in nitric oxide management in oxygen-limited environments. Nitric oxide is a key element in host defense against invasive pathogens
-
-
?
sulfite + 6 ferrocytochrome c + 6 H+
H2S + 3 H2O + 6 ferricytochrome c
-
-
-
?
hydroxylamine + ferricytochrome c
nitrite + ferrocytochrome c
-
-
-
-
r
hydroxylamine + ferricytochrome c
nitrite + ferrocytochrome c
-
-
-
r
hydroxylamine + ferricytochrome c
nitrite + ferrocytochrome c
-
-
-
-
r
hydroxylamine + ferricytochrome c
nitrite + ferrocytochrome c
-
-
-
-
r
hydroxylamine + ferrocytochrome c
NH3 + H2O + ferricytochrome c
-
cf. EC 1.7.99.1
-
-
?
hydroxylamine + ferrocytochrome c
NH3 + H2O + ferricytochrome c
-
cf. EC 1.7.99.1
-
-
r
hydroxylamine + ferrocytochrome c
NH3 + H2O + ferricytochrome c
cf. EC 1.7.99.1
-
-
r
hydroxylamine + ferrocytochrome c
NH3 + H2O + ferricytochrome c
-
cf. EC 1.7.99.1
-
-
r
hydroxylamine + ferrocytochrome c
NH3 + H2O + ferricytochrome c
-
cf. EC 1.7.99.1
-
-
r
nitrite + 6 ferrocytochrome c + 7 H+
NH3 + 2 H2O + 6 ferricytochrome c
-
-
-
-
?
nitrite + 6 ferrocytochrome c + 7 H+
NH3 + 2 H2O + 6 ferricytochrome c
-
-
-
?
nitrite + 6 ferrocytochrome c + 7 H+
NH3 + 2 H2O + 6 ferricytochrome c
-
-
-
-
?
nitrite + 6 ferrocytochrome c + 7 H+
NH3 + 2 H2O + 6 ferricytochrome c
-
-
-
-
?
nitrite + 6 ferrocytochrome c + 7 H+
NH3 + 2 H2O + 6 ferricytochrome c
-
-
-
-
?
nitrite + 6 ferrocytochrome c + 7 H+
NH3 + 2 H2O + 6 ferricytochrome c
-
-
-
?
nitrite + ferrocytochrome c + H+
NH3 + H2O + ferricytochrome c
-
-
-
?
nitrite + ferrocytochrome c + H+
NH3 + H2O + ferricytochrome c
the periplasmic cytochrome c nitrite reductase, Nrf, system of Escherichia coli utilizes nitrite as a respiratory electron acceptor by reducing it to ammonium. NO is a proposed intermediate in this six-electron reduction and NrfA can use exogenous NO as a substrate
-
-
?
nitrite + ferrocytochrome c + H+
NH3 + H2O + ferricytochrome c
-
protection against NO may involve reductive detoxification in low-oxygen environments, and three enzymes, flavorubredoxin, flavohaemoglobin and cytochrome c nitrite reductase: Determination of a combined role for NorV and NrfA in NO detoxification under anaerobic conditions, overview
-
-
?
nitrite + ferrocytochrome c + H+
NH3 + H2O + ferricytochrome c
-
-
-
?
nitrite + ferrocytochrome c + H+
NH3 + H2O + ferricytochrome c
ccNiR catalyzes the six-electron reduction of nitrite to ammonia as the final step in the dissimilatory pathway of nitrate ammonification
-
-
?
additional information
?
-
-
the recombinant enzyme is able to catalyze reduction of nitrite (yielding ammonium) and hydroxylamine, EC 1.7.99.1, whereas hydroxylamine oxidation is negligible
-
-
?
additional information
?
-
the recombinant enzyme is able to catalyze reduction of nitrite (yielding ammonium) and hydroxylamine, EC 1.7.99.1, whereas hydroxylamine oxidation is negligible
-
-
?
additional information
?
-
-
the recombinant enzyme is able to catalyze reduction of nitrite (yielding ammonium) and hydroxylamine, EC 1.7.99.1, whereas hydroxylamine oxidation is negligible
-
-
?
additional information
?
-
-
the recombinant enzyme is able to catalyze reduction of nitrite (yielding ammonium) and hydroxylamine, EC 1.7.99.1, whereas hydroxylamine oxidation is negligible
-
-
?
additional information
?
-
-
NrfA from Escherichia coli has a well established role in the respiratory reduction of nitrite to ammonium, it might also participate in NO radical detoxification, detoxifying exogenously generated NO radical encountered during invasion of a human host, overview
-
-
?
additional information
?
-
-
the recombinant enzyme is able to catalyze reduction of nitrite (yielding ammonium) and hydroxylamine, EC 1.7.99.1, whereas hydroxylamine oxidation is negligible
-
-
?
additional information
?
-
-
the enzyme catalyzes the last step in the metabolic pathway of nitrate dissimilation
-
-
?
additional information
?
-
ccNiR also reduces sulfite to sulfide linking the biogeochemical cycles of nitrogen and of sulfur
-
-
?
additional information
?
-
-
ccNiR also reduces sulfite to sulfide linking the biogeochemical cycles of nitrogen and of sulfur
-
-
?
