|Superclasses:||Reactions Classified By Conversion Type → Simple Reactions → Chemical Reactions|
|Reactions Classified By Substrate → Small-Molecule Reactions|
Enzymes and Genes:
non-specific polyamine oxidase : FMS1 ( Saccharomyces cerevisiae )
non-specific polyamine oxidase : PAO3 ( Arabidopsis thaliana col )
spermine oxidase : PAO4 ( Arabidopsis thaliana col )
spermine oxidase : PAO1 ( Arabidopsis thaliana col )
polyamine oxidase 1 (spermidine-forming) : SMOX ( Homo sapiens )
The reaction direction shown, that is, A + B ↔ C + D versus C + D ↔ A + B, is in accordance with the direction in which it was curated.
Mass balance status: Balanced.
Enzyme Commission Primary Name for 220.127.116.11: spermine oxidase
Enzyme Commission Synonyms for 18.104.22.168: PAOh1/SMO, PAOh1 (ambiguous), AtPAO1, AtPAO4, SMO, mSMO, SMO(PAOh1), SMO/PAOh1, SMO5, mSMOmu
Enzyme Commission Primary Name for 22.214.171.124: non-specific polyamine oxidase
Enzyme Commission Synonyms for 126.96.36.199: polyamine oxidase (ambiguous), Fms1, AtPAO3
Standard Gibbs Free Energy (ΔrG'° in kcal/mol): -21.580688 [Latendresse13]
Enzyme Commission Summary for 188.8.131.52:
The enzyme from Arabidopsis thaliana (PAO1) oxidizes norspermine to norspermidine with high efficiency. The mammalian enzyme, encoded by the SMOX gene, is a cytosolic enzyme that catalyses the oxidation of spermine at the exo (three-carbon) side of the tertiary amine. No activity with spermidine. Weak activity with N1-acetylspermine. A flavoprotein (FAD). Differs in specificity from EC 184.108.40.206 (N1-acetylpolyamine oxidase), EC 220.127.116.11 (polyamine oxidase (propane-1,3-diamine-forming)), EC 18.104.22.168 (N8-acetylspermidine oxidase (propane-1,3-diamine-forming) and EC 22.214.171.124 (non-specific polyamine oxidase).
Enzyme Commission Summary for 126.96.36.199:
A flavoprotein (FAD). The non-specific polyamine oxidases may differ from each other considerably. The enzyme from Saccharomyces cerevisiae shows a rather broad specificity and also oxidizes N8-acetylspermidine [Landry03]. The enzyme from Ascaris suum shows high activity with spermine and spermidine, but also oxidizes norspermine [Muller92]. The enzyme from Arabidopsis thaliana shows high activity with spermidine, but also oxidizes other polyamines [Moschou08]. The specific polyamine oxidases are classified as EC 188.8.131.52 (N1-acetylpolyamine oxidase), EC 184.108.40.206 (polyamine oxidase (propane-1,3-diamine-forming)), EC 220.127.116.11 (N8-acetylspermidine oxidase (propane-1,3-diamine-forming)) and EC 18.104.22.168 (spermine oxidase).
Moschou08: Moschou PN, Sanmartin M, Andriopoulou AH, Rojo E, Sanchez-Serrano JJ, Roubelakis-Angelakis KA (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 Physiol 147(4);1845-57. PMID: 18583528
MurrayStewart08: Murray-Stewart T, Wang Y, Goodwin A, Hacker A, Meeker A, Casero RA (2008). "Nuclear localization of human spermine oxidase isoforms - possible implications in drug response and disease etiology." FEBS J 275(11);2795-806. PMID: 18422650
Tavladoraki06: Tavladoraki P, Rossi MN, Saccuti G, Perez-Amador MA, Polticelli F, Angelini R, Federico R (2006). "Heterologous expression and biochemical characterization of a polyamine oxidase from Arabidopsis involved in polyamine back conversion." Plant Physiol 141(4);1519-32. PMID: 16778015
Wang03a: Wang Y, Murray-Stewart T, Devereux W, Hacker A, Frydman B, Woster PM, Casero RA (2003). "Properties of purified recombinant human polyamine oxidase, PAOh1/SMO." Biochem Biophys Res Commun 304(4);605-11. PMID: 12727196
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