The selective, often stoichiometric, interaction of a molecule with one or more specific sites on another molecule [goid 5488] [evidence IEA]; Interacting selectively with zinc (Zn) ions [goid 8270] [evidence IEA]; Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced [goid 16491] [evidence IEA]; Interacting selectively with any metal ion [goid 46872] [evidence IEA]; Catalysis of the reaction: an alcohol + NAD+ = an aldehyde or ketone + NADH + H+ requiring the presence of zinc [goid 4024] [pmid 7876099] [evidence IDA]; Catalysis of the reaction: an aldehyde + H2O + O2 = a carboxylic acid + H2O2 [goid 4031] [pmid 9600267] [evidence IDA]; Catalysis of the reaction: retinol + NAD+ = retinal + NADH + H+ [goid 4745] [pmid 11997393] [evidence IDA]; Catalysis of the reaction: retinol + NAD+ = retinal + NADH + H+ [goid 4745] [pmid 7876099] [evidence IDA]; The selective, often stoichiometric, interaction of a molecule with one or more specific sites on another molecule [goid 5488] [evidence IEA]; Interacting selectively with zinc (Zn) ions [goid 8270] [evidence IEA]; Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced [goid 16491] [evidence IEA]; Interacting selectively with retinol, vitamin A1, 2,6,6-trimethyl-1-(9'-hydroxy-3',7'-dimethylnona-1',3',5',7'-tetraenyl)cyclohex-1-ene, one of the three components that makes up vitamin A. Retinol is an intermediate in the vision cycle and it also plays a role in growth and differentiation [goid 19841] [pmid 9228021] [evidence IDA]; Interacting selectively with ethanol, CH(3)-CH(2)-OH [goid 35276] [pmid 9228021] [evidence IDA]; Interacting selectively with any metal ion [goid 46872] [evidence IEA]; Interacts with receptors to reduce the action of another ligand, the agonist [goid 48019] [pmid 9600267] [evidence IDA]