And we said that Chimotrypsin is actually an example of a serene protease that breaks peptide bonds on the carboxyl side of specific amino acids, those amino acids that contain bulky hydrophobic aromatic side chains. Now, Chimetrypsin is initially synthesized in a Zymogen form in the inactive form. And the Zymogen form of China trypsin is known as Chimotrypcinogen. And Chimitripcinogen is a single polypeptide chain that consists of 245 individual amino acids. Now, the Chimitripcinogen is not fully functional. In fact, it's not functional at all.