E3 Ubiquitin-Protein Ligase Complex Recruitment (E3 Ligase Complex Recruitment)

E3 ubiquitin-protein ligase complex recruitment refers to the process by which E3 ubiquitin ligases, often as part of multi-protein complexes, are brought into proximity with specific substrate proteins. This recruitment is a critical step in the ubiquitination pathway—a post-translational modification system that tags proteins with ubiquitin for various cellular fates, most notably proteasomal degradation. The specificity of substrate recognition and recruitment is primarily determined by the E3 ligase or its associated adaptor/substrate receptor subunits. Ubiquitination regulates protein stability, localization, interactions, and activity—affecting nearly all aspects of eukaryotic cell biology including cell cycle progression, signal transduction, DNA repair, and immune responses. Dysregulation leads to diseases such as cancer. Therapeutic strategies such as PROTACs exploit this mechanism.

Other names

Ubiquitin Ligase RecruitmentE3 Ubiquitination Complex RecruitmentSubstrate Recruitment to E3 Ligase

Recruitment of E3 ligase complex to target protein, leading to ubiquitination and subsequent degradation or altered function.