1.7.3.6: hydroxylamine oxidase (cytochrome)
This is an abbreviated version!
For detailed information about hydroxylamine oxidase (cytochrome), go to the full flat file.
Word Map on EC 1.7.3.6
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1.7.3.6
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nitrosomonas
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europaea
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ammonia-oxidizing
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nh2oh
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nitrify
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nitrification
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anammox
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multiheme
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c-hemes
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chemoautotrophic
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stuttgartiensis
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heme-like
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tetraheme
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kuenenia
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nitrosococcus
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brocadia
- 1.7.3.6
- nitrosomonas
- europaea
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ammonia-oxidizing
- nh2oh
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nitrify
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nitrification
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anammox
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multiheme
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c-hemes
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chemoautotrophic
- stuttgartiensis
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heme-like
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tetraheme
- kuenenia
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nitrosococcus
- brocadia
Reaction
+ = + 2 ferrocytochrome c + 2 H+
Synonyms
EC 1.7.3.4, HAO, hydroxylamine oxidase, hydroxylamine oxidoreductase, hydroxylamine-cytochrome c oxidoreductase, hydroxylamine-cytochrome c reductase, oxidase, hydroxylamine HAO, protein NE1300
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Substrates Products
Substrates Products on EC 1.7.3.6 - hydroxylamine oxidase (cytochrome)
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REACTION DIAGRAM
hydroxylamine + 2 ferricytochrome c
nitroxyl + 2 ferrocytochrome c + 2 H+
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hydroxylamine + ferricytochrome c550
nitroxyl + ferrocytochrome c550 + H+
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under aerobic assay conditions nitrite is the major reaction product but N2O is also detected at low levels. Under anaerobic conditions no nitrite is produced but N2O is detected, though at non-stoichiometric levels. The production of nitrite by Paracoccus denitrificans hydroxylamine oxidase is an oxygen-dependent reaction
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hydroxylamine + ferricytochrome c551
nitroxyl + ferrocytochrome c551 + H+
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hydroxylamine + horse heart ferricytochrome c
nitroxyl + horse heart ferrocytochrome c + H+
nitroxyl + 2 ferrocytochrome c + O2 + H+
nitrite + 2 ferricytochrome c + H2O
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nitroxyl + horse heart ferrocytochrome c + H+
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hydroxylamine + horse heart ferricytochrome c
nitroxyl + horse heart ferrocytochrome c + H+
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hydroxylamine + O2
nitrite + H2O + H+
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horse heart cytochrome. Under aerobic assay conditions nitrite is the major reaction product but N2O is also detected at low levels. Under anaerobic conditions no nitrite is produced but N2O is detected, though at non-stoichiometric levels. The production of nitrite by Paracoccus denitrificans hydroxylamine oxidase is an oxygen-dependent reaction
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nitrite + reduced pseudoazurin
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hydroxylamine + pseudoazurin
nitrite + reduced pseudoazurin
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under aerobic assay conditions nitrite is the major reaction product but N2O is also detected at low levels. Under anaerobic conditions no nitrite is produced but N2O is detected, though at non-stoichiometric levels. The production of nitrite by Paracoccus denitrificans hydroxylamine oxidase is an oxygen-dependent reaction
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the enzyme utilizes horse-heart cytochrome c as an electron acceptor but is unable to donate electrons to purified Pseudomonas denitrificans cytochrome c550 or pseudoazurin, or to Pseudomonas aeruginosa azurin
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additional information
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the enzyme utilizes horse-heart cytochrome c as an electron acceptor but is unable to donate electrons to purified Pseudomonas denitrificans cytochrome c550 or pseudoazurin, or to Pseudomonas aeruginosa azurin
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