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Human CellExp TNFRII, human recombinant protein
TNFRSF1B, CD120b, TNFRII
- SPECIFICATION
- CITATIONS
- PROTOCOLS
- BACKGROUND
| Primary Accession | P20333 |
|---|---|
| Calculated MW | This protein is fused with a C-terminal 6×his tag, has a calculated MW of 26 kDa. The predicted N-terminus is Leu23. Protein migrates as 23-26 kDa in reduced SDS-PAGE due to glycosylation. |
| Gene ID | 7133 |
|---|---|
| Gene Symbol | TNFRII |
| Other Names | TNFRSF1B, CD120b, TNFRII |
| Gene Source | Human |
| Source | HEK293 cells |
| Assay&Purity | SDS-PAGE; ≥95% |
| Assay2&Purity2 | N/A; |
| Recombinant | Yes |
| Results | Measured by its ability to inhibit the TNFα mediated cytotoxicity in the L-929 mouse fibroblast cells in the presence of the metabolic inhibitor actinomycin D. The ED50 for this effect is typically 0.05-0.5 µg/mL in the presence of 0.25 ng/mL rhTNFα. |
| Target/Specificity | TNFRII |
| Application Notes | Centrifuge the vial prior to opening. Reconstitute in sterile PBS, pH 7.4 to a concentration of 50 µg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 month. For extended storage, it is recommended to store at -20°C. |
| Format | Lyophilized |
| Storage | -20°C; Lyophilized from 0.22 µm filtered solution in PBS, pH7.4. Generally 5-8% Mannitol or trehalose is added as a protectant before lyophilization. |
Thousands of laboratories across the world have published research that depended on the performance of antibodies from Abcepta to advance their research. Check out links to articles that cite our products in major peer-reviewed journals, organized by research category.
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Provided below are standard protocols that you may find useful for product applications.
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. 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. TNFRII is expressed in fetal brain. The protein is produced naturally as a soluble form (sTNFRII). The soluble receptor inhibits TNFα action by competing with cell surface receptors in binding TNFα, thereby blocking its biologic effects. TNFRII is strongly expressed at the cartilage–pannus junction, and plays a major role in a subset of families with multiple cases of rheumatoid arthritis (RA). Further, high plasma levels of sTNFRII were significantly associated with increased incidence of coronary heart disease, independent of established cardiovascular risk factors, and seems to be useful for monitoring the inflammatory activity of sarcoidosis.
References
Kohno T.,et al.Proc. Natl. Acad. Sci. U.S.A. 87:8331-8335(1990).
Smith C.A.,et al.Science 248:1019-1023(1990).
Beltinger C.P.,et al.Genomics 35:94-100(1996).
Lainez B.,et al.Int. Immunol. 16:169-177(2004).
Kalnine N.,et al.Submitted (OCT-2004) to the EMBL/GenBank/DDBJ databases.
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