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. 2021 Apr 20;9:672267. doi: 10.3389/fchem.2021.672267

Figure 1.

Figure 1

Targeted protein degradation by PROTACs. A PROTAC simultaneously binds a target of interest (TOI) and an E3 ubiquitin ligase complex, leading to ubiquitination and degradation of the TOI via the UPS. E2, Ubiquitin-conjugating enzyme; Ub, Ubiquitin.