o-Aminophenol oxidase (EC 1.10.3.4, isophenoxazine synthase, o-aminophenol:O2 oxidoreductase, 2-aminophenol:O2 oxidoreductase, GriF) is an enzyme with systematic name 2-aminophenol:oxygen oxidoreductase.
[1][2][3][4] This enzyme catalyses the following chemical reaction o-Aminophenol oxidase is a flavoprotein.