And this pocket is only created when the green substrate binds into the pocket of this blue enzyme. So before the binding took place, we did not have that allosteric site. But once the binding takes place, we create this pocket, the crevice, that can now bind some type of inhibitor molecule. And if that red inhibitor molecule is in close proximity, it can bind onto that pocket. And once it binds, it forms the enzyme substrate inhibitor complex. And notice that once the inhibitor is bound, it will basically prevent that green structure from exiting that active site, and that will will ultimately prevent that product from actually being formed.