Most Enzymes are named with an “ase” in the end, except the initially studied ones such as trypsin pepsin and rennin. It is stated by the International Union of Biochemistry (I.U.B.) originated standards of enzyme nomenclature, which suggest that an enzyme’s name should contain upon not only substrate but also the reactions.
According to this arrangement, enzyme-glutamic-oxaloacetic-transaminase (GOT) is known as L-aspartate 2-oxoglutarate aminotransferase while the enzyme uricase is called urate O2 oxidoreductase.
The classification of enzymes is as follows –
1. Oxidoreductases: Oxidoreductases catalyze some reactions that are related to the reduction of oxidation. Most used names are catalase, oxidase, dehydrogenase, and oxidase.
2. Transferases: Transferases catalyze relocations of groups such as phosphate, acetyl, and methyl. Most common names include polymerase, acetyltransferase, protein kinase and methylase. The last three subclasses the primary roles in the regulation of the cellular process. The polymerase is essential when it comes to the synthesis of RNA and DNA.
3. Hydrolases: Hydrolases catalyze reactions directly related to hydrolysis. Here a molecule is parted in two or more molecules by the adding water.
4. Lyases: Lyases catalyze the cleavage of C-N, C –C, C –O bonds through other ways than oxidation and hydrolysis. Most used names include aldolase and decarboxylase.
5. Isomerases : Isomerases catalyze the atomic reshuffles inside the molecule itself. Most common examples include racemase and protein disulfide isomerase (PDI).
6. Ligases: Ligases catalyze the reaction that joins two molecules, examples – RNA ligase, peptide synthase, and DNA ligase and aminoacyl-tRNA synthases.