Reaction catalyzed by nitrite reductase [NAD(P)H] (1.7.1.4)
NH3
+
3
NAD(P)+
+
2
H2O
=
+
3
NAD(P)H
+
5
NH3
+
3 NAD(P)+
+
2 H2O
=
nitrite
+
3 NAD(P)H
+
5 H+