So this is our preexisting branching point. Now what the glycogen branching enzyme requires is the segment that it detaches must be around seven residues in length. So usually seven or more. So we have 123-4567 and one of these, this one here at the end is a terminal non reducing residue. What that means is on the fourth carbon it contains a free hydroxyl group. And so now what this enzyme does is it cleaves this Alpha One four glycocitic bond and it basically detaches this entire segment.