And we're going to discuss blood clotting in much more detail when we get into biochemistry. Another example of enzymes that undergo proteolytic cleavage to basically activate themselves are digestive enzymes. So to look at an example, let's focus on a specific type of enzyme known as Chimotrypsin. So basically Chimetrypsin is a specific type of enzyme that is found in the small intestine and it plays a role in cleaving polypeptides in breaking them down so that we can ingest them into the cells of our body. So one important digestive enzyme that is formed in its zymogen form in the pancreas of our body is known as a Chimotrypsinogen. So Chimotripsynogen is a single polypeptide chain that is inactive.