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. Author manuscript; available in PMC: 2019 Sep 16.
Published in final edited form as: J Med Chem. 2019 Mar 14;62(14):6469–6481. doi: 10.1021/acs.jmedchem.9b00101

Figure 3.

Figure 3.

Enhancement of proteasome by modulation of posttranslational modifications (PTMs): (A) Inhibition of USP14 prevents ubiquitin chain trimming, thereby promoting 26S-mediated protein degradation. (B) Phosphorylation of 19S Rpn6 subunit through activation of c-AMP PKA enhances 26S-mediated proteolysis.