Hydrolase
Hydrolyzes chemical bonds includes ATPase protease and others
Isomerase
Rearranges bonds within a molecule to form an isomer
Ligase
Forms a chemical bond
Lyase
Breaks chemical bonds by means other than oxidation or hydrolysis
Kinase
Transfers a phosphate group to a molecule from a high energy carrier such as ATP
Oxidoreductase
Runs redox reactions
Polymerase
Polymerization such as the addition of nucleotides to the leading strand of DNA
Phosphatase
Removes a phosphate group from a molecule
Phosphorylase
Transfers a phosphate group to a molecule from inorganic phosphate
Protease
Hydrolyzes peptide bonds