These are enzymes that catalyze oxidations or reductions. Enzymes such as dehyrogenases, oxidases, and peroxidases. These enzymes catalyze the transfer of a group from one molecule to another. Examples such as Phosphatases, transaminases, and transmethylases. Hydrolases-These enzymes catalyze hydrolysis reactions.
Examples are the digestive enzymes such as sucrase, amylase, maltase, and lactase.
These enzymes catalyze the removal of groups in non-aqueous media. An example would be the decarboxylases. Enzymes that catalyze the isomerization of molecules. Examples are racemases, and cis-trans isomerases. These are also called synthetases which are enzymes that catalyze condensation reactions where smaller molecules are connected with the resulting removal of a water molecule.