Recombinant Human TNF RII/TNFRSF1B (aa 24-206) Protein, CF

Formulations:
Catalog # Availability Size / Price Qty
1089-R2-025/CF
Product Details
Citations (2)
FAQs
Reviews

Recombinant Human TNF RII/TNFRSF1B (aa 24-206) Protein, CF Summary

Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Level
<0.10 EU per 1 μg of the protein by the LAL method.
Activity
Measured by its ability to inhibit the TNF-alpha mediated cytotoxicity in the L‑929 mouse fibroblast cells in the presence of the metabolic inhibitor actinomycin D. Matthews, N. and M.L. Neale (1987) in Lymphokines and Interferons, A Practical Approach. Clemens, M.J. et al. (eds): IRL Press. 221. The ED50 for this effect is 0.2-0.6 µg/mL in the presence of 0.25 ng/mL rhTNF-alpha.
Source
E. coli-derived human TNF RII/TNFRSF1B protein
Pro24-Thr206
Accession #
N-terminal Sequence
Analysis
Pro24
Predicted Molecular Mass
20 kDa

Product Datasheets

Carrier Free

What does CF mean?

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.

What formulation is right for me?

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.

1089-R2/CF

Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

1089-R2

Formulation Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Background: TNF RII/TNFRSF1B

TNF RI (also known as the p60 or p55 TNFR) and TNF RII (the p75 or p80 TNFR) are two distinct type I transmembrane glycoproteins that bind TNF with high-affinity. Both RI and RII are prototypic members of the TNF receptor superfamily and have been designated TNFRSF1A and TNFRSF1B, respectively. The extracellular domains of both receptors contain four conserved cysteine-rich domains while their intracellular domains are dissimilar, indicative of distinct signaling pathways. Human TNF RII cDNA encodes a 461 amino acid (aa) residue precursor protein with a 22 aa putative signal peptide, a 235 aa extracellular domain, a 20 aa transmembrane domain and a 174 aa cytoplasmic domain. Whereas all cell types studied express TNF RI, TNF RII expression is limited primarily to hematopoietic cells and cells of the immune system. Most of the biological functions of TNF are mediated via TNF RI. Soluble forms of both TNF RI and TNF RII, generated as a result of proteolytic cleavage of the extracellular domains, have been detected in vivo in various biological fluids. The soluble TNF receptors can bind TNF with high affinity and function as TNF antagonists (1 - 4).

References
  1. Chen G. and D.V. Goeddel (2002) Science 296:1634.
  2. MacEwan, D.J. (2002) Cell Signal. 14:477.
  3. Locksley, R.M. et al. (2001) Cell 104:487.
  4. Feldmann, M.and R.N. Maini (2001) Annu. Rev. Immunol. 19:163.
Long Name
Tumor Necrosis Factor Receptor II
Entrez Gene IDs
7133 (Human); 21938 (Mouse); 156767 (Rat); 102144224 (Cynomolgus Monkey)
Alternate Names
CD120b antigen; CD120b; Etanercept; p75 TNF receptor; p75TBPII; p75TNFR; soluble TNFR1B variant 1; TNF RII; TNFBRp80 TNF-alpha receptor; TNF-R2; TNFR2TNFR1B; TNF-R75; TNFR80; TNFRII; TNF-RII; TNF-R-II; TNFR-II; TNFRSF1B; tumor necrosis factor beta receptor; tumor necrosis factor binding protein 2; Tumor necrosis factor receptor 2; tumor necrosis factor receptor superfamily member 1B; tumor necrosis factor receptor superfamily, member 1B; Tumor necrosis factor receptor type II

Citations for Recombinant Human TNF RII/TNFRSF1B (aa 24-206) Protein, 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.

2 Citations: Showing 1 - 2
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  1. Generation and characterization of small single domain antibodies inhibiting human tumor necrosis factor receptor 1.
    Authors: Steeland S, Puimege L, Vandenbroucke R, Van Hauwermeiren F, Haustraete J, Devoogdt N, Hulpiau P, Leroux-Roels G, Laukens D, Meuleman P, De Vos M, Libert C
    J Biol Chem, 2015;290(7):4022-37.
    Species: Human
    Sample Types: Complex Sample Type
    Applications: Enzyme Assay
  2. Direct comparison of traditional ELISAs and membrane protein arrays for detection and quantification of human cytokines.
    Authors: Copeland S, Siddiqui J, Remick D
    J. Immunol. Methods, 2004;284(1):99-106.
    Species: N/A
    Sample Types: N/A
    Applications: ELISA (Standard)

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