Types of Enzymes

Oxidoreductases: Catalyze redox reactions; Transferases: Transfer a group (other than hydrogen) between substrates; Hydrolases: Catalyze hydrolysis of bonds (ester, peptide, glycosidic); Lyases: Removal of groups without hydrolysis, leaving double bonds; Isomerases: Conversion of isomers; Ligases: Catalyze joining together of two molecules (e.g., DNA ligase).