Ubiquitination is a highly complex type of post-translational modification. Through the coordinated action of ubiquitin molecules, ubiquitin chain structures, the E1-E2-E3 enzymatic cascade, and deubiquitinating enzymes, this system regulates substrate protein stability, subcellular ...
The UPS is the primary pathway for protein degradation within cells. It tags specific substrate proteins with ubiquitin (Ub), which are then recognized by the 26S proteasome and degraded into small peptides. This system maintains protein homeostasis and regulates processes such as the cell ...