MeSH definition : 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 1.6.6.2.;
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 1.6.6.2.