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. And that's because the active side and the oxyanion whole of this particular Zymogen is not yet formed. It's not in the proper confirmation to be able to actually fit this substrate molecule. So what has to happen is this Chimotrypcinogen has to actually be activated proteolytically.