Now, what about the two types of allosteric effectors that our cells actually use to basically control and regulate the activity of this enzyme? So let's begin by focusing on CTP. So remember, this enzyme catalyzes the first step in the biosynthetic process of CTP citadine triphosphate. And it's the CTP that basically creates a negative feedback loop that goes back and binds onto the Alastairic sites found on these red regulatory chains. And by binding onto these red regulatory chains, it decreases and inhibits the activity of that enzyme. The question is, how does this actually take place?