SI4803: K48-Linked Tri-Ubiquitin

Poly-ubiquitylation of target proteins through linkage at K48, is now the most thoroughly studied of the various chain linkages, and we once considered the hallmark of this post-translational modification. It is now clear that many, if not all, poly-Ub chain topologies likely play distinct and important roles in regulating cellular processes. Nevertheless, K48 linkage remains a critical pathway for the cells to maintain homeostasis through proteolytic degradation, and as such remains very intriguing for the study of DUBs that play a role in the degradation, as well as the proteasome itself. These tri-ubiquitin chains generated from the enzymatic linkage 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	25,686.5 Da
Quantity	100 µg
Concentration	Variable
Formulation	20 mM Tris pH 7.5, 150 mM NaCl, 1 mM EDTA
Storage	-80°C, avoid freeze/thaw cycles