And that Lysine will contain this nitrogen atom that will be able to form a bond in the same fashion that we show here. And so we'll form an isoppeptide bond, and we'll attach a second ubiquitous, then a third ubiquitous, a fourth ubiquitous. And at that point, we target that protein for degradation. But this process can happen many more times than just four times. And in fact, this process happens on different Lysine residues on that target protein. So essentially, once we undergo the process of Ubiquit nation, it's that then that we can actually target that particular protein for breakdown.