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Home >> Antibodies >> CD137 Antibody / 4-1BB / TNFRSF9

CD137 Antibody / 4-1BB / TNFRSF9 [clone 4-1BB/3201] (V7567)

  Catalog No Formulation Size Price (USD)  
Image V7567-100UG 0.2 mg/ml in 1X PBS with 0.1 mg/ml BSA (US sourced) and 0.05% sodium azide 100 ug 559
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V7567-20UG 0.2 mg/ml in 1X PBS with 0.1 mg/ml BSA (US sourced) and 0.05% sodium azide 20 ug 259
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V7567SAF-100UG 1 mg/ml in 1X PBS; BSA free, sodium azide free 100 ug 559
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V7567IHC-7ML Prediluted in 1X PBS with 0.1 mg/ml BSA (US sourced) and 0.05% sodium azide; *For IHC use only* 7 ml 559
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Immunofluorescence staining of MeOH-fixed human HEK293 cells with CD137/4-1BB antibody (green, clone 4-1BB/3201) and Reddot nuclear stain (red).
IHC staining of FFPE human spleen with CD137/4-1BB antibody (clone 4-1BB/3201). HIER: boil tissue sections in pH9 10mM Tris with 1mM EDTA for 10-20 min and allow to cool before testing.
IHC staining of FFPE human cerebellum with CD137/4-1BB antibody (clone 4-1BB/3201). HIER: boil tissue sections in pH9 10mM Tris with 1mM EDTA for 10-20 min and allow to cool before testing.
IHC staining of FFPE human renal cell carcinoma with CD137 antibody (clone 4-1BB/3201). HIER: boil tissue sections in pH9 10mM Tris with 1mM EDTA for 10-20 min and allow to cool before testing.
IHC staining of FFPE human renal cell carcinoma with CD137 antibody (clone 4-1BB/3201). HIER: boil tissue sections in pH9 10mM Tris with 1mM EDTA for 10-20 min and allow to cool before testing.
Flow cytometry testing of MeOH-fixed human HEK293 cells with CD137 antibody (clone 4-1BB/3201); Red=isotype control, Blue= CD137 mAb.
Analysis of HuProt(TM) microarray containing more than 19,000 full-length human proteins using CD137 antibody (clone 4-1BB/3201). These results demonstrate the foremost specificity of the 4-1BB/3201 mAb.
Z- and S- score: The Z-score represents the strength of a signal that an antibody (in combination with a fluorescently-tagged anti-IgG secondary Ab) produces when binding to a particular protein on the HuProt(TM) array. Z-scores are described in units of standard deviations (SD's) above the mean value of all signals generated on that array. If the targets on the HuProt(TM) are arranged in descending order of the Z-score, the S-score is the difference (also in units of SD's) between the Z-scores. The S-score therefore represents the relative target specificity of an Ab to its intended target.
Western blot testing of human kidney lysate with CD137/4-1BB antibody. Expected molecular weight: ~30 kDa monomer and 55-60 kDa dimer. Higher molecular weights may be observed due to glycosylation.
Availability 1-3 business days
Species Reactivity Human
Format Purified
Host Mouse
Clonality Monoclonal (mouse origin)
Isotype Mouse IgG1, kappa
Clone Name 4-1BB/3201
Purity Protein G affinity chromatography
UniProt Q07011
Localization Cell surface, cytoplasmic
Applications ELISA : order BSA/sodium azide-free format for coating
Immunofluorescence : 1-2ug/ml
Flow Cytometry : 1-2ug/million cells
Immunohistochemistry (FFPE) : 1-2ug/ml for 30 min at RT
Western Blot : 1-2ug/ml
Limitations This CD137/4-1BB antibody is available for research use only.
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Description

CD137 antibody targets CD137, also known as 4-1BB, a member of the tumor necrosis factor receptor superfamily encoded by the TNFRSF9 gene. CD137 is a type I transmembrane costimulatory receptor that is minimally expressed on resting immune cells but is rapidly induced following cellular activation. CD137 antibody reagents are widely used to study immune activation due to the receptor’s tightly regulated expression and strong association with effector immune responses.

CD137 expression is most prominently observed on activated CD8+ T lymphocytes, with additional expression detected on activated CD4+ T cells, natural killer cells, dendritic cells, and subsets of monocytes. Upon ligand engagement, CD137 signaling promotes intracellular pathways that support cell survival, proliferation, and sustained cytokine production. These signaling events contribute to the expansion and persistence of effector and memory immune cell populations during immune responses.

As a costimulatory immune receptor, CD137 plays an important role in shaping adaptive immunity and regulating immune activation thresholds. Elevated CD137 expression has been reported in inflammatory conditions and within tumor-infiltrating lymphocyte populations, where it reflects immune cell activation within the tissue microenvironment. Antibody-based detection of CD137 is therefore frequently applied in immunology and immuno-oncology research to characterize activation status, immune cell subsets, and costimulatory signaling dynamics.

In addition to its role in acute immune activation, CD137 signaling has been implicated in immune regulation during chronic stimulation and immune exhaustion. Analysis using a 4-1BB antibody enables detailed assessment of costimulatory receptor expression across experimental systems, including lymphoid tissues and activated immune cell populations. Clone 4-1BB/3201 is designed to recognize CD137 and is suitable for research applications focused on immune signaling, costimulatory receptor biology, and immune cell characterization.

Application Notes

Optimal dilution of the CD137/4-1BB antibody should be determined by the researcher.
1. The prediluted format is supplied in a dropper bottle and is optimized for use in IHC. After epitope retrieval step (if required), drip mAb solution onto the tissue section and incubate at RT for 30 min.

Immunogen

A recombinant human CD137 protein fragment within amino acids 19-188 was used as the immunogen for the CD137/4-1BB antibody.

Storage

Store the CD137/4-1BB antibody at 2-8oC (with azide) or aliquot and store at -20oC or colder (without azide).

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