SI4804: K48-Linked Tetra-Ubiquitin

Poly-ubiquitylation of target proteins through linkage at K48 is the most thoroughly studied of the various ubiquitin chain linkages. It is now clear that many, if not all, poly-Ub chain topologies are likely to play distinct and important roles in regulating cellular processes. Nevertheless, K48 linkages remain a critical pathway for cells to maintain protein homeostasis and remain intriguing for the study of DUBs that play a role in regulating degradation, as well as the proteasome itself. These tetra-ubiquitin chains generated from the enzymatic linkage (E2-25K) of wild-type ubiquitin through lysine 48. The most distal ubiquitin contains an arginine substitution for the lysine at position 48, limiting chain length.

Info

Species	Human
Source	E. coli
Tag	None
Molecular Weight	34,678.3 Da
Quantity	25 µg
Concentration	Variable
Formulation	20 mM Tris pH 7.5, 150 mM NaCl, 1 mM EDTA
Storage	-80°C, avoid freeze/thaw cycles