Oxidoreductases enzymes
Oxidoreductases are the group/ class of enzymes that catalyze the oxidation-reduction reaction which involves the transfer of electrons/ H+ from one molecule to another. In these reactions, one compound is oxidised and the other is reduced.
A reduced + A' oxidised → A oxidised + A' reduced
Few examples of oxidoreductase enzymes are dehydrogenase, peroxidase etc.
Example
Alcohol + NAD+ → Aldehyde + NADH2
Final answer
A reduced + A' oxidised → A oxidised + A' reduced