What is an enzyme made of?
Enzymes are proteins comprised of amino acids linked together in one or more polypeptide chains.
This sequence of amino acids in a polypeptide chain is called the primary structure.
This, in turn, determines the three-dimensional structure of the enzyme, including the shape of the active site.
Some enzymes are not produced by certain cells, and others are formed only when required. Enzymes are not always found uniformly within a cell; often they are compartmentalized in the nucleus, on the cell membrane, or in subcellular structures.
The Role of Enzymes in the Digestive System
- Amylase, produced in the mouth
- Pepsin, produced in the stomach
- Trypsin, produced in the pancreas
- Pancreatic lipase is produced in the pancreas
- Deoxyribonuclease and ribonuclease, are produced in the pancreas.