Nitrate reductase (NAD(P)H)

Nitrate reductase (NAD(P)H) (EC 1.7.1.2, assimilatory nitrate reductase, assimilatory NAD(P)H-nitrate reductase, NAD(P)H bispecific nitrate reductase, nitrate reductase (reduced nicotinamide adenine dinucleotide (phosphate)), nitrate reductase NAD(P)H, NAD(P)H-nitrate reductase, nitrate reductase [NAD(P)H₂], NAD(P)H₂:nitrate oxidoreductase) is an enzyme with systematic name nitrite:NAD(P)⁺ oxidoreductase.^[1][2][3][4] This enzyme catalises the following chemical reaction

nitrite + NAD(P)⁺ + H₂O ${\displaystyle \rightleftharpoons }$ nitrate + NAD(P)H + H⁺

Nitrate reductase is an iron-sulfur molybdenum flavoprotein.