Bivalent Ligand Types and Descriptions

Type Description
PROTAC Proteolysis Targeting Chimera; structured as E3 binding moiety–linker–target binding moiety; target degraded via UPS
SNIPER Specific and Non-genetic Inhibitor-of-apoptosis proteins (IAPs)-dependent Protein Eraser; structured as IAP ligand–linker–target binding moiety; target degraded via UPS
HaloPROTAC PROTAC variant that induces degradation of HaloTag fusion proteins; structured as E3 binding moiety–linker–HaloTag binding moiety; target degraded via UPS
CLIPTAC PROTAC variant formed in cells by click chemistry; structured as E3 binding moiety–linker–target binding moiety; target degraded via UPS
LYTAC Lysosome Targeting Chimera; structured as glycopeptide ligand–linker–target binding moiety; target degraded via endosome-lysosome system
AUTAC/ATTEC Autophagosome Tethering Compound; structured as an LC3 binding moiety or cGMP-based degradation tag–linker–target binding moiety; target degraded via autophagic degradation
Molecular Glue Single chemical moiety that contacts both the E3 and the target in a ternary complex; structured as a single chemical entity without linkers; target degraded via UPS or otherwise inactivated in the ternary complex
opto-PROTAC PROTAC variant in which a light-inducible degradation tag can be used to regulate target degradation activity; structured as E3 binding moiety with a photolabile caging group–linker–target binding moiety; target degraded via UPS
bioPROTAC Engineered intracellular proteins consisting of a target-binding domain directly fused to an E3 ubiquitin ligase; target degraded via UPS
nano-PROTAC Proteolysis Targeting Chimera with a nano-particle based delivery system, allowing for enhanced delivery targeting; structured as E3 binding moiety–linker–target binding moiety, which is activatable in the presence of a specific stimulus; target degraded via UPS
AbTAC Antibody-based PROTACs, in which bispecific antibodies bind to two proteins simultaneously, typically a transmembrane E3 and POI; target usually degraded via lysosomal system
RIBOTAC Ribonuclease Targeting Chimera for targeted RNA degradation; structured as a ribonuclease recruiting moiety–linker–RNA binding moiety
DUBTAC Deubiquitinase Targeting Chimera; structured as DUB binding moiety–linker–target binding moiety; target deubiquitinated via recruited deubiquitinase (DUB)
 
bivalent_ligand_types_and_definitions.txt · Last modified: 2025/03/24 09:10 by jenn