Small-molecule-induced protein degradation has been demonstrated to possess the potential to drug a broader range of proteinaceous biological targets. It involves the selective recruitment of the body’s inherent protein degradation pathways, to eliminate disease causing / associated proteins, using bifunctional small molecule drugs. Presently, the most popular and promising class of interventions in this field of research, is proteolysis targeting chimeras (PROTACs); these can simultaneously bind a target protein and an E3-ubiquitin ligase, and thereby, facilitate the selective ubiquitination and eventual proteasome-mediated degradation of the target protein. The most interesting feature of this mechanism of drug action is the fact that PROTACs and other targeted protein degraders can eliminate protein targets regardless of their function.

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