And this protein has been ubiquitated with these ubiquitous molecules. So we have five here, we have five here and we have five here. So now that we marked this protein for degradation, the 19th as subunits not shown here for simplification purposes, these basically locate and bind to this polyubiquid protein. And only then can the 19th subunit begin to use its Atpa's activity to basically unfold the protein and insert the protein into this core. And inside this core, we'll find these catalytic units that basically have nuclear files. And these nuclear files attack the peptide bonds and begin to break down the protein into smaller peptides.