
Keywords: DTT, dithiothreitol; DUB, deubiquitinase; K48-Ub, K48-linked polyubiquitin; K63-Ub, K63-linked polyubiquitin; MTSL, (1-oxy-2,2,5,5-tetramethyl-d-pyrroline-3-methyl)-methanethiosulfonate; OTU, ovarian tumor protease; PRE, paramagnetic relaxation enhancemen