Assimilatory NAD(P)H Nitrate Reductase

An Iron-Sulfur and Molybdenum containing FLAVOPROTEIN that catalyzes the oxidation of nitrite to nitrate. This enzyme can use either NAD or NADP as cofactors. It is a key enzyme that is involved in the first step of nitrate assimilation in Plants; Fungi; and Bacteria. This enzyme was formerly classified as EC