Now, the purpose of this was to create this high energy bond that is very reactive because as we'll see in just a moment, this is able to actually undergo the reaction which we attach it onto that growing glycogen chain. Now, the pyrophosphate that is formed in the presence of water, which is basically found in the cytoplasma baristalis, will undergo a hydrolysis reaction in which this bond will be cleaved and will form two orthophosphate molecules. Now, this is the reaction that actually drives the formation of UDP glucose. It's because of this reaction, because this is continually being depleted, that this reaction actually takes place in the product favor direction. So this is an important reaction because it ensures that we continually produce the UDP glucose molecules. Now, once we produce the UDP glucose molecules, the next step is to basically generate a primer molecule.