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

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Summary
Reactivity HuSpecies Glossary
Applications Bioactivity

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

Details of Functionality
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
Pro24
Protein/Peptide Type
Recombinant Proteins
Gene
TNFRSF1B
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Theoretical MW
20 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.
Publications
Read Publications using
1089-R2 in the following applications:

Packaging, Storage & Formulations

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.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Reconstitution Instructions
Reconstitute at 100 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.

Notes

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

Alternate Names for Recombinant Human TNF RII/TNFRSF1B (aa 24-206) Protein

  • 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

Background

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).

  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.

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Bioinformatics

Gene Symbol TNFRSF1B
Entrez
Uniprot