Definition: Catalysis of an oxidation-reduction (redox) reaction in which hydrogen acts as an electron donor.
Note that enzymes of class EC:1.12.99.- should also be annotated to this term.
GO:0016491 - oxidoreductase activity
GO:0016699 - oxidoreductase activity, acting on hydrogen as donor, iron-sulfur protein as acceptor (5) ,
GO:0033748 - hydrogenase (acceptor) activity (9) ,
GO:0046994 - oxidoreductase activity, acting on hydrogen as donor, with a quinone or similar compound as acceptor (2)
Unification Links: GO:0016695
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