Polyamine oxidase

In enzymology, a polyamine oxidase (EC 1.5.3.11) is an enzyme that catalyzes the chemical reaction

N1-acetylspermine + O2 + H2O N1-acetylspermidine + 3-aminopropanal + H2O2
polyamine oxidase
Identifiers
EC number1.5.3.11
CAS number294646-71-2
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO

The 3 substrates of this enzyme are N1-acetylspermine, O2, and H2O, whereas its 3 products are N1-acetylspermidine, 3-aminopropanal, and H2O2.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-NH group of donors with oxygen as acceptor. The systematic name of this enzyme class is N1-acetylspermidine:oxygen oxidoreductase (deaminating). This enzyme is also called 1-N-acetylspermidine:oxygen oxidoreductase (deaminating). It has 2 cofactors: FAD, and Iron. A similar enzyme in plants catalyzes non-acetylated polyamines.[1]

Structural studies

As of late 2007, 9 structures have been solved for this class of enzymes, with PDB accession codes 1B37, 1H81, 1H82, 1H83, 1H84, 1H86, 1RSG, 1YY5, and 1Z6L.

References

  1. Moschou, Panagiotis; Maite Sanmartin; Athina H Andriopoulou; Enrique Rojo; Jose J Sanchez-Serrano; Kalliopi A Roubelakis-Angelakis (1 August 2008). "Bridging the gap between plant and mammalian polyamine catabolism: a novel peroxisomal polyamine oxidase responsible for a full back-conversion pathway in Arabidopsis". Plant Physiology. 147 (4): 1845–1857. doi:10.1104/pp.108.123802. PMC 2492618. PMID 18583528.


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