Catalog number: SBB-PS0034, 50 μgUbiquitin- Propargylamideis a potent and specific inhibitor of deubiquitinating enzymes (DUBs) based on a C-terminal electrophilic Propargylamidegroup. Ub- Propargylamidecan be used for activity profiling experiments and DUB inhibitor specificity determination. It targets four of the five major DUB families: UCH, USP, OUT, and MJD, while leaving JAMM metalloproteases uninhibited. Reaction conditions will need to be optimized for each specific application. We recommend an initial Recombinant Human Ubiquitin-Propargylamide concentration of 1-5 μM.