Nitrate reductase (quinone)

Nitrate reductase (quinone) (, nitrate reductase A, nitrate reductase Z, quinol/nitrate oxidoreductase, quinol-nitrate oxidoreductase, quinol:nitrate oxidoreductase, NarA, NarZ, NarGHI) is an enzyme with systematic name nitrite:quinone oxidoreductase. This enzyme catalyses the following chemical reaction


 * nitrate + a quinol $$\rightleftharpoons$$ nitrite + a quinone + H2O

This is a membrane-bound enzyme which supports [anaerobic respiration] on nitrate.