Detects human 4‑1BB/TNFRSF9/CD137 in direct ELISAs and Western blots. In direct ELISAs and Western blots, no cross-reactivity with recombinant mouse (rm) 4-1BB, recombinant human (rh) CD27, rmCD27, rhCD30, rmCD30, rhCD40, rmCD40, rhDR3, rhDR6, rhEDAR, rmEDAR, rhFas, rmFas, rhGITR, rmGITR, rhHVEM, rhLTR beta, rmLTR beta, rhNGFR, rhOPG, rmOPG, rhRANK, rmRANK, rhTAJ, rhTNF RI, rmTNF RI, rhTNF RII, or rmTNF RII is observed.
Monoclonal Mouse IgG2B Clone # 145501
Protein A or G purified from hybridoma culture supernatant
Mouse myeloma cell line NS0-derived recombinant human 4‑1BB/TNFRSF9/CD137 Leu24-Gln186 Accession # Q07011
Supplied in a saline solution containing BSA and Sodium Azide.
Detection of 4‑1BB/TNFRSF9/CD137 in Human PBMCs by Flow Cytometry.
Human peripheral blood mononuclear cells (PBMCs) treated with PHA for 5 hours were stained with Mouse Anti-Human CD3 epsilon APC‑conjugated Monoclonal Antibody (Catalog # FAB100A) and either (A) Mouse Anti-Human 4‑1BB/TNFRSF9/CD137 PE‑conjugated Monoclonal Antibody (Catalog # FAB838P) or (B) Mouse IgG2B Phycoerythrin Isotype Control (Catalog # IC0041P). View our protocol for Staining Membrane-associated Proteins.
Preparation and Storage
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Protect from light. Do not freeze.
12 months from date of receipt, 2 to 8 °C as supplied.
4-1BB is an inducible T cell surface protein belonging to the TNF receptor superfamily. It is alternatively known as TNFRSF9, CD137, and ILA. The 255 amino acid human 4-1BB is a type I transmembrane protein having in its extracellular domain four of the cysteine-rich motifs that are characteristic of the TNF receptor superfamily. The 30 KD glycoprotein exists both as a monomer and as a dimer on T cells. The human and mouse proteins share 60% amino acid sequence identity. 4-1BB is absent from naive T cells, but it is upregulated and continually expressed following T cell activation. The natural ligand, 4-1BBL, is a member of the TNF superfamily and is expressed on activated antigen presenting cells including dendritic cells, macrophages, and B cells. Cross-linking of 4-1BB by 4-1BBL or by agonistic antibodies transmits a potent co-stimulatory signal that enhances the effect of other activating signals such as PHA or anti-CD3 antibodies. 4-1BB signals through the TFAF2‑NIK pathway resulting in activation of NF-kappa B and ultimately promoting proliferation and survival of T cells.
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