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. 2023 Mar 7;13(3):e1204. doi: 10.1002/ctm2.1204

FIGURE 4.

FIGURE 4

The mechanism of PROTAC‐mediated target protein degradation. PROTACs simultaneously recruit POI and E3 ligase into a ternary complex where ubiquitin is transferred from the E2–E3 complex to POI. Ubiquitinated proteins are attracted to the 26S proteasome system for degradation while PROTAC is recycled to recruit new targets.