The Classification of Enzyme. Based on the work site, enzyme can be distinguished into two types, endoenzyme (enzyme that works inside the cell/extracellular enzyme) and exoenzyme (enzyme that works outside the cell/extracellular enzyme)' Meanwhile, based on the work method, enzyme can be classified into six
- Oxidoreductase is necessary to catalyze oxidation or to reduce reaction of a substance. For examples are the enzymes of dehydrogenase and oxidase.
- Transferase is necessary to catalyze the transfer of one molecule to another. For examples are the enzymes of transaminase and kinase.
- Hydrolase catalyzes product formation with the help of water (hydrolysis). For examples axe the enzymes of lipase, amylase, and peptidase.
- Lyase catalyzes the removal or formation of C-C, C-N, C-O, or C-S bonds from a substrate by means other than hydrolysis. For examples are the enzymes of pyruvate dekarboxylase and oxalate dekarboxylase.
- Somerase catalyzes the structural rearrangement of a molecule due to the isomeration in the molecule. For examples are the enzymes of isomerase and mutase.
- Ligase catalyzes the joining of two molecules by forming a new chemical bond of C-O, C- S, C-N, or C-C and it requires the breaking down of ATP. For example is the enzyme of synthetase.
Each enzyme has its specific name. The naming of enzyme is done:
- based on the substrate or reaction that is catalyzed by the enzyme and
- by giving-ase suffix for the name of the enzyme
source: Essential, Biology, 2006.