ATPAO3 (POLYAMINE OXIDASE 3); oxidoreductase. similar to ATPAO2 (POLYAMINE OXIDASE 2), amine oxidase [Arabidopsis thaliana] (TAIR:AT2G43020.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO69965.1); similar to amine oxidase family protein [Musa acuminata] (GB:ABF69974.1); similar to H0215F08.3 [Oryza sativa (indica cultivar-group)] (GB:CAH66792.1); contains InterPro domain Flavin-containing amine oxidase; (InterPro:IPR001613); contains InterPro domain Amine oxidase; (InterPro:IPR002937)