label: intramolecular oxidoreductase activity, interconverting keto- and enol-groups
label_lc: intramolecular oxidoreductase activity, interconverting keto- and enol-groups
description: "Catalysis of an oxidation-reduction (redox) reaction in which the hydrogen donor and acceptor, which is a keto- or an enol-group, are the same molecule, and no oxidized product appears."