In fact, it stops cleaving the alpha one four glycocitic bonds for residues for glucose molecules away from the branching point, the nearest alpha one six glycocitic bond. So glycogen phosphoralase, the enzyme that catalyzes step one of glycogen breakdown, can only cleave alpha one four glycocitic bonds. It does not cleave alpha one six glycocitic bonds that are found in glycogen. In fact, this enzyme stops four residues away from the nearest branching point. And we'll talk more about that in this particular diagram. Now, step number two can actually be broken down into two different steps and that's because step number two utilizes two different types of enzymes.