SI210: Single Lysine Ubiquitin Explorer Panel


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Ubiquitin is a small polypeptide that can be conjugated via its C-terminus to the primary amine groups of a lysine residue on target proteins. This covalent attachment is referred to as monoubiquitylation. Additional ubiquitin moieties can subsequently be conjugated to this initial ubiquitin, utilizing any one (of seven) lysine residue on the surface of ubiquitin. The formation of these ubiquitin chains is referred to as polyubiquitylation. LifeSensors has produced a complete panel of tag-free recombinant human ubiquitins that are engineered to have all available lysines mutated to arginines except at position mentioned. For example, ubiquitin-K6 has all available lysines mutated to arginines except at position 6, such that this molecule can only form polyubiquitin chains of K6-linkage type. The panel consists Ub mutants- K6, K11, K27, K29, K33, K48, and K63. The panel also contains WT Ub and ubiquitin-K0 (all lysines mutated to arginines).


Species Human
Source E. coli
Tag None
Molecular Weight Variable
Quantity 1 mg each
Concentration Variable
Formulation PBS
Storage -80°C, avoid freeze/thaw cycles

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  • Characterization of proteins responsible for ubiquitin conjugation or removal
  • Ligand binding studies with ubiquitin related proteins
  • Characterization of linkage type for target protein
  • profiling of E2/E3 interactions
  • Characterization of E3 polyubiquitylation activity
  • Tag-free recombinant ubiquitin