Home  |  Contact
Due to work on this service, it may not be fully operational on Wednesday March 20 between 1.30 pm and 2.30 pm CEST. Apologies for the incovenience.

A new class EC 7, Translocases, has been added to the EC list. It will be part of ENZYME from release 2018_10. Read more about EC 7 here.

ENZYME entry: EC

Accepted Name
Hydroxylamine oxidase (cytochrome).
Alternative Name(s)
Hydroxylamine oxidase.
Hydroxylamine oxidoreductase.
Reaction catalysed
Hydroxylamine + O(2) <=> nitrite + H(2)O + H(+)
Fe cation.
  • The enzyme from the heterotrophic nitrifying bacterium Paracoccus denitrificans contains three to five non-heme, non-iron-sulfur iron atoms and interacts with cytochrome c(556) and pseudoazurin.
  • Under anaerobic conditions in vitro only nitrous oxide is formed.
  • Presumably nitroxyl is released and combines with a second nitroxyl to give nitrous oxide and water.
  • When oxygen is present, nitrite is formed.
  • Formerly EC
PRIAM enzyme-specific profiles1.7.3.6
KEGG Ligand Database for Enzyme Nomenclature1.7.3.6
IUBMB Enzyme Nomenclature1.7.3.6
MEDLINEFind literature relating to

View entry in original ENZYME format
View entry in raw text format (no links)
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 1.7.3.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 1.7.-.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 1.-.-.-