It actually requires a primer. And that primer has to be more than four glucose molecules long. So the question that I like to begin in this lecture is what exactly synthesizes that primer that allows the glycogen synthase to begin the elongation process, to begin building that glycogen molecule and creating the Alpha one four glycocity bond. So it's basically an enzyme known as glycogenin. So before glycogen synthase can begin glycogen synthesis, another enzyme called glycogenin must create a glycogen primer. And this primer is a short sequence of glucose molecules which are connected by Alpha one four glycocytic bonds.