Recombinant Human Hexa-Ub/Ub6 WT Chains (K63-linked), CF

Product Discontinued

Recombinant Human Hexa-Ub/Ub6 WT Chains (K63-linked), CF Summary

• Details of Functionality: Ubiquitin chains vary in length, linkage, and function. K63-linked Hexa-Ubiquitin Chains (Ub6) are ideal for investigating Ubiquitin-binding proteins and as substrates for Ubiquitin-specific isopeptidases. Reaction conditions will need to be optimized for each specific application. IMPORTANT: Heating this product in SDS-PAGE buffer or terminating reactions containing this product with heated SDS-PAGE buffer could lead to unexpected, high apparent molecular weight banding or smearing on gels that is not representative of product purity. For optimal results, we recommend incubation in SDS-PAGE buffer + DTT at <40 °C for 20 minutes prior to gel electrophoresis.
• Source: E. coli-derived human Hexa-Ubiquitin protein
• Accession #: P0CG47
• Protein/Peptide Type: Recombinant Proteins
• Gene: UBB
• Purity: >90%, by SDS-PAGE under reducing conditions and visualized by Colloidal Coomassie® Blue stain.

Applications/Dilutions

• Dilutions:
  • Enzyme Activity
• Theoretical MW: 52 kDa.
  Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Packaging, Storage & Formulations

• Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 24 months from date of receipt, -20 to -70 °C as supplied.
  • 3 months, -20 to -70 °C under sterile conditions after opening.
• Buffer: 1 mg/ml (19 μM) in sterile, deionized water
• Purity: >90%, by SDS-PAGE under reducing conditions and visualized by Colloidal Coomassie® Blue stain.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Human Hexa-Ub/Ub6 WT Chains (K63-linked), CF

• HexaUbiquitin
• Hexa-Ubiquitin
• Ub6

Background

With a predicted molecular weight of 52 kDa, hexa-Ubiquitin chains are composed of six Ubiquitin monomers that are covalently linked through isopeptide bonds, which typically form between a lysine residue of one Ubiquitin molecule and the C-terminal glycine residue of another Ubiquitin molecule (1). Each human Ubiquitin monomer is 76 amino acids (aa) in length and shares 96% and 100% aa identity with yeast and mouse Ubiquitin, respectively (2). Seven of the 76 aa in Ubiquitin are lysine residues that can participate in poly-Ubiquitin chain formation. Linkage through specific lysine residues is thought to serve as a signal that affects protein degradation, signaling, trafficking, and other cellular processes (3-8).

Linkage specific hexa-Ub can be used to investigate the mechanism of binding and recognition by E1 or E2 enzymes, deubiquitinating enzymes, E3 ligases, the proteasome or other proteins that contain Ubiquitin-associated domains (UBAs) or Ubiquitin-interacting motifs (UIMs). This product is formed with wild-type Ubiquitin and linkage-specific enzymes. It has been shown that the rate of Ubiquitin-substrate conjugate degradation is related to poly-Ubiquitin chain length. Tetra-Ubiquitin is the minimal unit required for recognition by the proteasome, and longer chains probably have enhanced binding to proteasomal subunits and may be more resistant to disassembly by a proteasome-associated isopeptidases.

 

1. Scheffner, M. et al. (1995) Nature 373:81.
2. Sharp, P.M. & W.-H. Li (1987) Trends Ecol. Evol. 2:328.
3. Behrends, C. & J.W. Harper (2011) Nat. Struct. & Mol. Biol. 18:520.
4. Greene, W. et al. (2012) PLoS Pathog. 8:e1002703.
5. Henry, A.G. et al. (2012) Dev. Cell 23:519.
6. Tong, X. et al. (2012) J. Biol. Chem. 287:25280.
7. Wei, W. et al. (2004) Nature 428:194.
8. Zhang, J. et al. (2012) J. Biol. Chem. 287:28646.

Publications for Hexa-Ubiquitin (UC-317)(2)

Publications using UC-317

• Santos, CM;Cizubu, BK;Okonkwo, DA;Chen, CY;Maske, N;Snyder, NA;Simoes, V;Washington, EJ;Silva, GM; Redox control of the deubiquitinating enzyme Ubp2 regulates translation during stress The Journal of biological chemistry 2024-10-07 [PMID: 39384040] (Bioassay, N/A)
• Shi T, Bao J, Wang N, Zheng J, Wu D Identification Of Small Molecule TRABID Deubiquitinase Inhibitors By Computation-Based Virtual Screen. BMC Chem Biol, 2012-05-14;12(1):4. 2012-05-14 [PMID: 22584113] (Bioassay)

Bioinformatics

• Gene Symbol: UBB
• Uniprot:
  • P0CG47()