Recombinant Human 4-1BB/TNFRSF9 Fc Avi-tag Protein, CF

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Product Details

Summary
Reactivity HuSpecies Glossary
Applications Bioactivity
Format
Carrier-Free

Order Details

Recombinant Human 4-1BB/TNFRSF9 Fc Avi-tag Protein, CF Summary

Additional Information
Biotinylated
Details of Functionality
Measured by its binding ability in a functional ELISA.

When Recombinant Human 4-1BB Ligand/TNFSF9 His-tag (Catalog # 2295-4L) is immobilized at 0.01 µg/mL (100 µL/well), Biotinylated Recombinant Human 4-1BB/TNFRSF9/CD137 Fc Chimera Avi-tag (Catalog # AVI10536) binds with an ED50 of 0.125-1 ng/mL.

Source
Human embryonic kidney cell, HEK293-derived human 4-1BB/TNFRSF9/CD137 protein
Human 4-1BB/TNFRSF9/CD137
(Leu24-Gln186)
Accession # Q07011.1
IEGRMDHuman IgG1
(Pro100-Lys330)
Avi-tag
N-terminusC-terminus
Accession #
N-terminal Sequence
Leu24
Structure / Form
Disulfide-linked homodimer, biotinylated via Avi-tag
Protein/Peptide Type
Recombinant Proteins
Purity
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Theoretical MW
46 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.
SDS-PAGE
56-66 kDa, under reducing conditions

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 Trehalose.
Purity
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Reconstitution Instructions
Reconstitute at 400 μg/mL in PBS.

Notes

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

Alternate Names for Recombinant Human 4-1BB/TNFRSF9 Fc Avi-tag Protein, CF

  • 4-1BB ligand receptor
  • 41BB
  • 4-1BB
  • CD137 antigen
  • CD137
  • CD137MGC2172
  • CDw137
  • FLJ43501
  • ILA
  • ILAhomolog of mouse 4-1BB
  • induced by lymphocyte activation (ILA)
  • interleukin-activated receptor, homolog of mouse Ly63
  • receptor protein 4-1BB
  • T cell antigen ILA
  • T-cell antigen 4-1BB homolog
  • T-cell antigen ILA
  • TNFRSF9
  • tumor necrosis factor receptor superfamily member 9
  • tumor necrosis factor receptor superfamily, member 9

Background

4-1BB, also known as CD137 and TNFRSF9, is glycoprotein in the TNF receptor superfamily of immune costimulatory molecules. 4-1BB functions in the development and activation of multiple immune cell types (1). Mature human 4-1BB consists of an extracellular domain (ECD) with four TNFR cysteine‑rich repeats, a transmembrane segment and a cytoplasmic domain with four potential phosphorylation sites (2, 3). Within the ECD, human 4-1BB shares 60% amino acid sequence identity with mouse and rat 4-1BB. 4-1BB is expressed as a disulfide-linked homodimer on various populations of activated T cell including CD4+, CD8+, memory CD8+, NKT, and regulatory T cells (4-7) as well as on myeloid and mast cell progenitors, dendritic cells, mast cells, and bacterially infected osteoblasts (8-11). It binds with high affinity to the transmembrane 4-1BB Ligand/TNFSF9 which is expressed on antigen presenting cells and myeloid progenitor cells (3, 8). This interaction co‑stimulates the proliferation, activation, and/or survival of the 4-1BB expressing cell (3-7). It can also enhance the activation-induced cell death of repetitively stimulated T cells (3). Mice lacking 4-1BB show augmented T cell activation, perhaps due to its absence on regulatory T cells (12). 4-1BB can associate with OX40 on activated T cells, forming a complex that responds to either ligand and inhibits Treg and CD8+ T cell proliferation (13). Reverse signaling through 4-1BB Ligand inhibits the development of dendritic cells, B cells, and osteoclasts (8, 11) but supports mature dendritic cell survival and co‑stimulates the proliferation and activation of mast cells (9, 10). 4‑1BB activation enhances CD8+ T cell and NK cell mediated anti-tumor immunity (14). It also contributes to the development of inflammation in high fat diet-induced metabolic syndrome (15). Soluble forms of 4-1BB and 4-1BB Ligand circulate at elevated levels in the serum of rheumatoid arthritis and hematologic cancer patients, respectively (16, 17). Our Avi-tag Biotinylated 4‑1BB features biotinylation at a single site contained within the Avi-tag, a unique 15 amino acid peptide. Protein orientation will be uniform when bound to streptavidin-coated surface due to the precise control of biotinylation and the rest of the protein is unchanged so there is no interference in the protein's bioactivity.
  1. Wang, C. et al. (2009) Immunol. Rev. 229:192.
  2. Schwarz, H. et al. (1993) Gene 134:295.
  3. Alderson, M.R. et al. (1994) Eur. J. Immunol. 24:2219.
  4. Wen, T. et al. (2002) J. Immunol. 168:4897.
  5. Pulle, G. et al. (2006) J. Immunol. 176:2739.
  6. Zheng, G. et al. (2004) J. Immunol. 173:2428.
  7. Kim, D. et al. (2008) J. Immunol. 180:2062.
  8. Lee, S. et al. (2008) Nat. Immunol. 9:917.
  9. Choi, B.K. et al. (2009) J. Immunol. 182:4107.
  10. Nishimoto, H. et al. (2005) Blood 106:4241.
  11. Saito, K. et al. (2004) J. Biol. Chem. 279:13555.

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