Recombinant Human Penta-Ub/Ub5 WT Chains (K48-linked), CF Summary
Product Datasheets
Carrier Free
CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins.Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration.The carrier free version does not contain BSA.
In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard.In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.
UC-216B
| Formulation | 1 mg/ml (23 μM) in sterile, deionized water |
| Shipping | The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below. |
| Stability & Storage: | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
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Reconstitution Calculator
Background: Penta-Ubiquitin
With a predicted molecular weight of 43 kDa, penta-Ubiquitin chains are composed of five 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 each of the lysine residues is thought to serve as a signal that affects protein degradation, signaling, trafficking, and other cellular processes (3-8).
Linkage specific penta-Ub can be used to investigate 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.
- Scheffner, M. et al. (1995) Nature 373:81.
- Sharp, P.M. & W.-H. Li (1987) Trends Ecol. Evol. 2:328.
- Behrends, C. & J.W. Harper (2011) Nat. Struct. Mol. Biol. 18:520.
- Greene, W. et al. (2012) PLoS Pathog. 8:e1002703.
- Henry, A.G. et al. (2012) Dev. Cell 23:519.
- Tong, X. et al. (2012) J. Biol. Chem. 287:25280.
- Wei, W. et al. (2004) Nature 428:194.
- Zhang, J. et al. (2012) J. Biol. Chem. 287:28646.
Citations for Recombinant Human Penta-Ub/Ub5 WT Chains (K48-linked), CF
R&D Systems personnel manually curate a database that contains references using R&D Systems products.The data collected includes not only links to publications in PubMed,but also provides information about sample types, species, and experimental conditions.
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- ZUFSP Deubiquitylates K63-Linked Polyubiquitin Chains to Promote Genome StabilityAuthors: P Haahr, N Borgermann, X Guo, D Typas, D Achuthanku, S Hoffmann, R Shearer, TK Sixma, N MailandMol. Cell, 2018;0(0):.Species: HumanSample Types: Cell LysatesApplications: Bioassay
- Identification Of Small Molecule TRABID Deubiquitinase Inhibitors ByComputation-Based Virtual Screen.Authors: Shi T, Bao J, Wang N, Zheng J, Wu DBMC Chem Biol, 2012;12(1):4.Species: N/ASample Types: Recombinant ProteinApplications: Bioassay
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