In enzymology, a hyponitrite reductase is an enzyme that catalyzes the oxidation of hydroxylamine H 2NOH by the nicotinamide adenine dinucleotide cation (NAD+) into hyponitrous acid HON=NOH:
2 H 2NOH + 2 NAD+ HON=NOH + 2 NADH + 2 H+
This systematic name of this enzyme class hydroxylamine:NAD+ oxidoreductase. It is also called NADH2:hyponitrite oxidoreductase.
This enzyme belongs to the family of oxidoreductases, specifically those acting on other nitrogenous compounds as donors with NAD+ or NADP+ as acceptor. It employs one cofactor, metal.
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