Enzymes are dynamic proteins that accelerate biochemical reactions.
Each enzyme acts on a specific reactant, the substrate.
Enzymes are characterized by greater activity, specificity and susceptibility to the influence of pH, temperature and other environmental changes.
Enzymes act in the presence of non-peptide cofactors or coenzymes.
An enzyme lacking its cofactor is called apoenzyme and the active enzyme with its co-factor, the holoenzyme.