2,5-diketocamphane 1,2-monooxygenase (, 2,5-diketocamphane lactonizing enzyme, ketolactonase I, 2,5-diketocamphane 1,2-monooxygenase oxygenating component, 2,5-DKCMO, camphor 1,2-monooxygenase, camphor ketolactonase I) is an enzyme with systematic name (+)-bornane-2,5-dione,NADH:oxygen oxidoreductase (1,2-lactonizing). This enzyme catalyses the following chemical reaction
2,5-diketocamphane 1,2-monooxygenase is a flavoprotein (FMN) which requires Fe<sup>2+</sup>.