So at a low concentration of our glucose, we want to be able to break down lactose to actually form the glucose that we can use to break down and form our ATP molecules. And so at low concentration of glucose, we want to express the formation of our beta galacticidase so that we can use this betagalacticidase to actually break down our lactose molecule. So once again, when the glucose concentration is low and lactose concentration is high, the lactose can transform into another disaccharide known as allo lactose, which binds to the repressor protein allosterically and inactivates that repressive protein which then detaches from the operator side on our apron on our lac operon. Now, at the same exact time, because we have a low concentration of glucose, we're going to have a high concentration of cyclic adenosine monophosphate or camp. And then camp will go on and bind to a molecule known as the catabolite activated protein or cap. And the cap goes on to special site that is shown by site number three that is known as the capsite.