| Synonyms |
bQR2, dihydronicotinamide riboside:quinone oxidoreductase, dihydronicotinamide riboside:quinone oxidoreductase 2, dihydronicotinamide riboside:quinone reductase 2, EC 1.10.99.2, melatonin-binding site MT3, MT3, MT3/NQO2, N-ribosyldihydronicotinamide dehydrogenase (quinone), N-ribosyldihydronicotinamide:quinone oxidoreductase 2, NQO2, NRH-oxidizing enzyme, NRH:QR2, NRH:quinone oxidoreductase, NRH:quinone oxidoreductase 2, NRH:quinone oxireductase 2, NRH:quinone reductase 2, QR2, quinone oxidoreductase 2, quinone reductase 2, quinone reductase type 2 |
| Comments |
A flavoprotein. Unlike EC 1.6.5.2, NAD(P)H dehydrogenase (quinone), this quinone reductase cannot use NADH or NADPH; instead it uses N-ribosyl- and N-alkyldihydronicotinamides. Polycyclic aromatic hydrocarbons, such as benz[a]anthracene, and the estrogens 17¦Â-estradiol and diethylstilbestrol are potent inhibitors, but dicoumarol is only a very weak inhibitor [2]. This enzyme can catalyse both 2-electron and 4-electron reductions, but one-electron acceptors, such as potassium ferricyanide, cannot be reduced [3]. |
