Determine the fuction of Monomeric enzymes

Monomeric enzymes include, pepsin, like the pancreatic serine proteases, plays a role in the digestion of proteins eaten by mammals. It is called an acid protease because it functions at the low pH values found in  the stomach. Peptide fragments are removed from the inactive form, pepsinogen, by the action of acid or other pepsin molecules to produce the active enzyme. Another acid protease found in the stomach is  chymosin