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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

Reaction

NH3
+ 2 H2O + 6 ferricytochrome c =
nitrite
 + 6 ferrocytochrome c + 7 H+

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 Oxidoreductases
         1.7 Acting on other nitrogenous compounds as donors
             1.7.2 With a cytochrome as acceptor
                1.7.2.2 nitrite reductase (cytochrome; ammonia-forming)

Specific Activity

Specific Activity on EC 1.7.2.2 - nitrite reductase (cytochrome; ammonia-forming)

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SPECIFIC ACTIVITY [µmol/min/mg]
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
0.03
purified recombinant MBP-tagged wild-type enzyme, substrate hydroxylamine, oxidation, pH 7.0, 37°C
0.04
below, purified recombinant MBP-tagged enzyme mutant W434Y, substrate hydroxylamine, oxidation, pH 7.0, 37°C
0.07
-
purified recombinant MBP-tagged wild-type enzyme, substrate hydroxylamine, oxidation, pH 7.0, 37°C
0.1
-
purified recombinant MBP-tagged wild-type enzyme, substrate hydroxylamine, oxidation, pH 7.0, 37°C
1
-
purified recombinant MBP-tagged wild-type enzyme, substrate nitrite, pH 7.0, 37°C
1.2
-
purified recombinant MBP-tagged wild-type enzyme, substrate nitrite, pH 7.0, 37°C
1050
-
nitrite, monomeric form
149
-
purified recombinant MBP-tagged wild-type enzyme, substrate hydroxylamine, reduction, pH 7.0, 37°C
150
Q5F2I3
purified native enzyme
158
-
purified recombinant MBP-tagged wild-type enzyme, substrate hydroxylamine, reduction, pH 7.0, 37°C
16.7
-
purified recombinant MBP-tagged enzyme mutant W434Y, substrate nitrite, pH 7.0, 37°C
181
-
purified recombinant MBP-tagged wild-type enzyme, substrate nitrite, pH 7.0, 37°C
1851
-
pH not specified in the publication, temperature not specified in the publication
2.9
-
purified recombinant MBP-tagged enzyme mutant W434Y, substrate nitrite, pH 7.0, 37°C
225
-
purified recombinant MBP-tagged enzyme mutant W434Y, substrate hydroxylamine, reduction, pH 7.0, 37°C
25
-
nitrite reduction
2690
-
hydroxylamine
27
purified recombinant MBP-tagged wild-type enzyme, substrate nitrite, pH 7.0, 37°C
29
-
purified recombinant MBP-tagged wild-type enzyme, substrate hydroxylamine, reduction, pH 7.0, 37°C
68
purified recombinant MBP-tagged wild-type enzyme, substrate hydroxylamine, reduction, pH 7.0, 37°C
682
-
nitrite
77
purified recombinant MBP-tagged enzyme mutant W434Y, substrate hydroxylamine, reduction, pH 7.0, 37°C
8
purified recombinant MBP-tagged enzyme mutant W434Y, substrate nitrite, pH 7.0, 37°C
810
-
nitrite, oligomeric form
850
-
nitrite, monomeric form
970
-
nitrite, oligomeric form
98
-
purified recombinant MBP-tagged enzyme mutant W434Y, substrate hydroxylamine, reduction, pH 7.0, 37°C
additional information
-
quantitation of steady-state NrfA reduction of NO radical, nitrite, and hydroxylamine