tcep biotin

TCEP-biotin is biotinylated form of the reducing agent TCEP and an affinity probe for protein lysine crotonylation. Covalent addition of the TCEP moiety to crotonylated lysine residues results in adduct formation that allows for detection or immobilization of crotonylated proteins through interaction with the biotin ligand. It has been used in the detection and isolation of crotonylated histones in HEK293 cells.

DBCO-S-S-PEG3-biotin is a cleavable reagent for the introduction of a biotin moiety to azide-containing biomolecules using copper-free Click Chemistry. The disulfide bond in this linker can be cleaved with reducing agents such as DTT, BME, and TCEP to remove the biotin label. PEG linkers can also be used in the synthesis of PROTACs.