Linked from
The 11 pages that link to Monoamine oxidase, each with the reason it gives.
SerotoninRelated: Its metabolism is one route by which serotonin signaling is terminated.
CatecholamineRelated: It helps break down catecholamines after their signaling or reuptake.
PhenethylamineRelated: It rapidly metabolizes phenethylamine, limiting its persistence in the body.
TryptamineRelated: Monoamine oxidases help break down tryptamine and related amines.
DimethyltryptamineRelated: Rapid oxidative breakdown helps make inhaled DMT’s effects brief.