And what our liver cells will try to do is they will try to maintain the proper level of glucose in our blood and they will uptake that glucose into the cell. Now what will also happen is the beta cells of the pancreas will begin to produce and secrete a small peptide hormone known as insulin. And insulin will travel through the bloodstream and eventually will make its way into a special receptor protein found on the membrane of liver cells known as the insulin receptor. And once the insulin binds onto the insulin receptor that initiates a signal transduction pathway. Now what this signal transduction pathway does is it ultimately stimulates protein kinases. So let's see how that takes place.