ID   1.6.5.5
DE   NADPH:quinone reductase.
AN   Quinone oxidoreductase.
AN   Zeta-crystallin.
CA   NADPH + quinone = NADP(+) + semiquinone.
CF   Zinc.
CC   -!- Specific for NADPH.
CC   -!- Catalyzes the one-electron reduction of certain quinones;
CC       orthoquinones are the best substrates.
CC   -!- Dicoumarol (cf. EC 1.6.5.2) and nitrofurantoin are competitive
CC       inhibitors with respect to the quinone substrate.
CC   -!- Abundant in the lens of the eye of some mammalian species.
PR   PROSITE; PDOC00058;
DR   P11415, QOR_CAVPO  ;  P28304, QOR_ECOLI  ;  Q08257, QOR_HUMAN  ;
DR   Q28452, QOR_LAMGU  ;  P42865, QOR_LEIAM  ;  P47199, QOR_MOUSE  ;
DR   Q0MVN8, QOR_PIG    ;  Q5R4S7, QOR_PONAB  ;  P43903, QOR_PSEAE  ;
DR   Q6AYT0, QOR_RAT    ;  P40783, QOR_SALTY  ;  O74489, QOR_SCHPO  ;
DR   P38230, QOR_YEAST  ;
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