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Information on EC 1.7.2.9 - hydroxylamine oxidase

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EC Tree
IUBMB Comments
The enzyme, characterized from the anaerobic ammonium-oxidizing (anammox) bacterium Kuenenia stuttgartiensis, is very similar to EC 1.7.2.6, hydroxylamine dehydrogenase. Both enzymes are homotrimeric enzymes in which each subunit contains seven c-type hemes and one specialized P460-type heme that is bound to a tyrosine residue in an adjacent subunit. However, this enzyme catalyses only the 3 electron oxidation of hydroxylamine, forming nitric oxide, and is not capable of performing further oxidation to form nitrite.
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Word Map
  • 1.7.2.9
  • heterotrophic
  • nitrification
  • nitrate
  • nitrify
  • nitrosomonas
  • wastewater
  • europaea
  • ammonia
  • sludge
  • n2o
  • anammox
  • nitrous
  • kuenenia
  • dinitrogen
  • stuttgartiensis
  • autotrophic
  • hydrazine
The expected taxonomic range for this enzyme is: Bacteria
Synonyms
hydroxylamine oxidase, kustc1061, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
hydroxylamine + 3 ferricytochrome c = nitric oxide + 3 ferrocytochrome c + 3 H+
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PATHWAY SOURCE
PATHWAYS
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