DBCO-NHCO-PEG4-NHS ester is a PEG/Alkyl/ether-based PROTAC linker can be used in the synthesis of PROTACs. DBCO-NHCO-PEG4-NHS ester is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[1].
PROTACs contain two different ligands connected by a linker; one is a ligand for an E3 ubiquitin ligase and the other is for the target protein. PROTACs exploit the intracellular ubiquitin-proteasome system to selectively degrade target proteins.
ADCs are comprised of an antibody to which is attached an ADC cytotoxin through an ADC linker.
[1]. Thornlow DN, et al. Dual Site-Specific Antibody Conjugates for Sequential and Orthogonal Cargo Release. Bioconjug Chem. 2019 Jun 19;30(6):1702-1710.