“…At present, cerebion (CRBN) and VHL are the most common E3 ligases utilized in the development of PROTACs although other E3 ligases have been utilized to a lesser extent including MDM2, cIAP1, KEAP1, and RNF114 (Pettersson & Crews, ; Toure & Crews, ; Zou, Ma, & Wang, ). Both pharmaceutical companies and academic labs are seeking to identify new E3 ligases to serve as a platform for PROTAC lead generation.…”