The protein degradation/ubiquitination pathway involves the regulated post-translational modification of substrate proteins via the addition of ubiquitin. Ubiquitination of substrate proteins signals the protein for degradation by the proteasome. Ubiquitination can also alter protein activity and interactions. The addition of ubiquitin is carried out by specific ubiquitin enzymes. [1]

Figure 1. Protein ubiquitination is carried out by enzyme complexes such as ubiquitin-E1, ubiquitin-E2, and ubiquitin-E3. Once the protein has been tagged with ubiquitin, it is recognized for degradation by the proteasome. The proteasome degrades the substrate protein into peptide subunits.

Pathways upstream of protein degradation/ubiquitination pathway:


1. All assertions and clinical trial landscape data are curated from primary sources. You can read more about the curation process here.