Definition: Catalysis of an oxidation-reduction (redox) reaction in which a nitrogenous group, excluding NH and NH2 groups, acts as a hydrogen or electron donor and reduces a hydrogen or electron acceptor.
Note that enzymes of class EC:1.7.99.- should also be annotated to this term.
GO:0016491 - oxidoreductase activity
GO:0008940 - nitrate reductase activity (9) ,
GO:0016662 - oxidoreductase activity, acting on other nitrogenous compounds as donors, cytochrome as acceptor (10) ,
GO:0046857 - oxidoreductase activity, acting on other nitrogenous compounds as donors, with NAD or NADP as acceptor (6) ,
GO:0050418 - hydroxylamine reductase activity (1) ,
GO:0098809 - nitrite reductase activity (7)
Unification Links: GO:0016661
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