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Biotin Anti-Human CD137
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BD Pharmingen™
Human (QC Testing)
Mouse BALB/c IgG1, κ
Recombinant Human 4-1BB Fusion Protein
ELISA Detection (Tested During Development)
0.5 mg/ml
VI C-7
Aqueous buffered solution containing ≤0.09% sodium azide.

Preparation and Storage

The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. The antibody was conjugated with biotin under optimum conditions, and unreacted biotin was removed. Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze.


ELISA Detection: Biotinylated 4B4-1 anti-human 4-1BB antibody is useful as a detection antibody for a sandwich ELISA which measures 4-1BB protein levels. Biotinylated 4B4-1 anti-human 4-1BB antibody can be paired with the purified h4-1BB-M127 anti-human 4-1BB as the capture antibody, with recombinant human 4-1BB:Fc fusion protein as the standard. This detection should be titrated between 0.5-1 µg/ml to determine its optimal concentration for ELISA detection. To obtain linear standard curves, doubling dilutions of recombinant human 4-1BB ranging from 2000 to 15 pg/ml are recommended for inclusion in each ELISA plate.

Note: This ELISA antibody pair shows no cross-reactivity with the following recombinant human cytokines: IL-1RI, IL-1RII, IL-1α, IL-1β,

IL-2, IL-2sR-α, IL-3, IL-4, IL-4sR, IL-5, IL-6, IL-6R gp130, IL-7, IL-8, IL-10, IL-12 p40, IL-12 p70, IL-13, IL-15, TNF-α, TNF-β, sTNFRII,


Product Notices

  1. This reagent has been pre-diluted for use at the recommended Volume per Test. We typically use 1 × 10^6 cells in a 100-µl experimental sample (a test).
  2. Since applications vary, each investigator should titrate the reagent to obtain optimal results.
  3. Please refer to for technical protocols.
  4. Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
  5. Please refer to to access safety data sheets (SDS).
552533 Rev. 2
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The 4B4-1 monoclonal antibody specifically binds to CD137 which is also known as 4-1BB, and ILA (induced by lymphocyte activation). CD137 is a type I transmembrane glycoprotein that belongs to the TNF/NGF receptor family. It is encoded by TNFRSF9 (tumor necrosis factor receptor superfamily, member 9). CD137 is expressed on activated T cells, B cells, monocytes, and follicular dendritic cells. CD137 plays roles in the costimulation, differentiation and survival of T cells and B cells.

552533 Rev. 2
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Biotin is a ubiquitous co-factor (also known as Vitamin B7) that has many properties that make it extremely useful for molecular biology. Biotin has an extremely high affinity for the Avidin family of proteins (Kd = 10-15 M), making it the perfect tool to link two molecules. Biotin labeled antibodies can be combined with any number of Avidin-conjugated probes in order to customize an assay to a particular need. This is especially useful in the case of magnetic cell separation using streptavidin/magnetic bead conjugates, or in the case of flow cytometry using streptavidin/fluorophore conjugates.
552533 Rev.2
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View product citations for antibody "552533" on CiteAb

Development References (4)

  1. Kim YJ, Broxmeyer HE. Therapeutic potential of 4-1BB (CD137) as a regulator for effector CD8(+) T cells. J Hematother Stem Cell Res. 2001; 10(4):441-449. (Biology). View Reference
  2. Melero I, Shuford WW, Newby SA, et al. Monoclonal antibodies against the 4-1BB T-cell activation molecule eradicate established tumors. Nat Med. 1997; 3(6):682-685. (Biology). View Reference
  3. Michel J, Schwarz H. Expression of soluble CD137 correlates with activation-induced cell death of lymphocytes. Cytokine. 2000; 12(6):742-746. (Biology). View Reference
  4. Vinay DS, Kwon BS. Role of 4-1BB in immune responses. Semin Immunol. 1998; 10(6):481-489. (Biology). View Reference
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552533 Rev. 2

Please refer to Support Documents for Quality Certificates

Global - Refer to manufacturer's instructions for use and related User Manuals and Technical data sheets before using this products as described

Comparisons, where applicable, are made against older BD Technology, manual methods or are general performance claims.  Comparisons are not made against non-BD technologies, unless otherwise noted.

For Research Use Only. Not for use in diagnostic or therapeutic procedures.