Enzymes are classified according to the reaction they catalyze. There are the following types of enzymes:
Oxidoreductases or Dehydrogenases: catalyze the transfer of hydrogen and electrons from one redox system to another.
Transferases: catalyze the transfer of groups from one molecule to another.
Hydrolases: these cause cleavage of bonds using water.
Lyases: also known as synthases; catalyze reactions involving either the cleavage or formation of chemical bonds; cleavage of bond does not require water.
Isomerases: move groups within a molecule, without changing the gross composition of the substrate.
Ligases: these are energy-dependent and are therefore always coupled to the hydrolysis of nucleoside triphosphates
-Esterases are the types of hydrolases that cause cleavage of bonds using water.