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1.7.2.6: hydroxylamine dehydrogenase

This is an abbreviated version!
For detailed information about hydroxylamine dehydrogenase, go to the full flat file.

Word Map on EC 1.7.2.6

Reaction

hydroxylamine
+
H2O
 + 4 ferricytochrome c =
nitrite
 + 4 ferrocytochrome c + 5 H+

Synonyms

EC 1.7.3.4, HAO, haoA, HCR, HOA, hydroxylamine cytochrome c554 oxidoreductase, hydroxylamine oxidase, hydroxylamine oxidoreductase, hydroxylamine-cytochrome c reductase, hydroxylamine:oxygen oxidoreductase, mHAO, NeHAO, NirK, NoHAO

ECTree

     1 Oxidoreductases
         1.7 Acting on other nitrogenous compounds as donors
             1.7.2 With a cytochrome as acceptor
                1.7.2.6 hydroxylamine dehydrogenase

Specific Activity

Specific Activity on EC 1.7.2.6 - hydroxylamine dehydrogenase

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SPECIFIC ACTIVITY [µmol/min/mg]
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
0.000903
-
with NAD+ as electron acceptor, at pH 8.0 and 30°C
0.001546
-
with 2,6-dichlorophenolindophenol as electron acceptor, at pH 8.0 and 30°C
0.001662
-
with phenazine methosulfate as electron acceptor, at pH 8.0 and 30°C
0.00201
-
with horse heart cytochrome c as electron acceptor, at pH 8.0 and 30°C
0.003
-
at pH 9.0 and 30°C
0.006
-
at pH 8.0 and 40°C
0.008
-
at pH 7.0 and 30°C
0.01
-
crude lysate, in 0.1 M sodium glycine buffer at pH 8.8, temperature not specified in the publication
0.014
-
at pH 8.0 and 25°C
0.015
0.022
-
at pH 8.0 and 30°C
0.02375
-
cell-free extract, with ferricyanide as electron acceptor, at pH 8.0 and 30°C
0.09204
-
after 3.9fold purification, with ferricyanide as electron acceptor, at pH 8.0 and 30°C
0.6
-
after 60fold purification, in 0.1 M sodium glycine buffer at pH 8.8, temperature not specified in the publication
1
-
nitrite reduction, pH 7.0, 37°C
1.2
-
nitrite reduction, pH 7.0, 37°C
11.63
-
supernatant obtained by centrifugation
149
-
hydroxylamine reduction, pH 7.0, 37°C
158
-
hydroxylamine reduction, pH 7.0, 37°C
181
-
nitrite reduction, pH 7.0, 37°C
25.6
-
supernatant obtained by centrifugation
27
-
nitrite reduction, pH 7.0, 37°C
29
-
hydroxylamine reduction, pH 7.0, 37°C
68
-
hydroxylamine reduction, pH 7.0, 37°C
8.94
-
supernatant obtained by centrifugation
additional information