- 55R-170 (See other available formats)
- Other Names
- TNFR type I, TNFRI, TNFR60, p55, TNFRSF1A
- Armenian Hamster IgG
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- Product Citations
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CD120a is a 55 kD Type I transmembrane protein, also known as Tumor Necrosis Factor Receptor Type I (TNFRI) or p55. It is expressed on a variety of cells at low levels. Resting T cells and erythrocytes express very little to no CD120a. This receptor binds both TNF-α and LT-α (also known as TNF-β). In association with TRADD and RIP, the receptor crosslinking induced by TNF-α or LT-α trimers is critical for signal transduction, leading to apoptosis, NF-kB activation, increased expression of proinflammatory genes, tumor necrosis, and cell differentiation depending on cell type and differentiation state. The 55R-170 antibody has been shown to block in vitro and in vivo receptor signaling initiated by ligand binding.Product Details
- Antibody Type
- Host Species
- Armenian Hamster
- E. coli-expressed extracellular domain of the mouse TNFRI protein
- 0.2 µm filtered in phosphate-buffered solution, pH 7.2, containing no preservative. Endotoxin level is <0.01 EU/µg of the protein (<0.001 ng/µg of the protein) as determined by the LAL test.
- The Ultra-LEAF™ (Low Endotoxin, Azide-Free) antibody was purified by affinity chromatography.
- The antibody is bottled at the concentration indicated on the vial, typically between 2 mg/mL and 3 mg/mL. Older lots may have also been bottled at 1 mg/mL. Please contact technical support for concentration and total µg amount, or use our Lookup tool if you have a lot number.
- Storage & Handling
- The antibody solution should be stored undiluted between 2°C and 8°C. This Ultra-LEAF™ solution contains no preservative; handle under aseptic conditions.
FC - Quality tested
Block, IP - Reported in literature
- Recommended Usage
Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is ≤ 1.0 µg per million cells in 100 µl volume. It is recommended that the reagent be titrated for optimal performance for each application.
- Application Notes
Flow Cytometry: For the most successful immunofluorescent staining results, it may be necessary to maximize signal over background by using a relatively bright fluorochrome-antibody conjugate or by using a high sensitivity, three-layer staining technique (e.g., including a biotinylated antibody (Cat. No. 112904) or biotinylated anti-Armenian hamster IgG (Cat. No. 405501) second step, followed by SAv-PE (Cat. No. 405204)).
ELISA Detection1: The biotinylated 55R-170 antibody is useful as a detection antibody when paired with the Purified 55R-286 antibody (Cat. No. 113002) as the capture antibody.
Additional reported applications (for the relevant formats) include:immunoprecipitation1, and In vitro and In vivo receptor blocking1. The Ultra-LEAF™Purified antibody (Endotoxin <0.01 EU/μg, Azide-Free, 0.2 μm filtered) is recommended for functional assays (Cat. No. 112905 & 112906).
(PubMed link indicates BioLegend citation)
- Sheehan, K. C., et al. 1995. J. Exp. Med. 181:607.
AB_2819825 (BioLegend Cat. No. 112905)
AB_2819826 (BioLegend Cat. No. 112906)
- TNFR superfamily, 55 kD
Variety of cell types at low levels
- Apoptosis, NF-κB activation, inflammation, tumor necrosis, cell differentiation
- TNF-α, LT-α (TNF-β)
- Biology Area
- Immunology, Innate Immunity
- Molecular Family
- CD Molecules, Cytokine/Chemokine Receptors
- Antigen References
1. Aggarwal, B. B., et al. 1985. Nature 318 665.
2. Chan, F. K.M., et al. 2000. Science 288:2351.
3. Loetscher, H., et al. 1990. Cell 61:351.
4. Rothe, J., et al. 1993. Nature 364:798.
- Gene ID
- 21937 View all products for this Gene ID
- View information about CD120a on UniProt.org
- Does BioLegend test each Ultra-LEAF™ antibody by functional assay?
No, BioLegend does not test Ultra-LEAF™ antibodies by functional assays unless otherwise indicated. Due to the possible complexities and variations of uses of biofunctional antibodies in different assays and because of the large product portfolio, BioLegend does not currently perform functional assays as a routine QC for the antibodies. However, we do provide references in which the antibodies were used for functional assays and we do perform QC to verify the specificity and quality of the antibody based on our strict specification criteria.
- Do you guarantee that your antibodies are totally pathogen free?
BioLegend does not test for pathogens in-house aside from the GoInVivo™ product line. However, upon request, this can be tested on a custom basis with an outside, independent laboratory.
- Does BioLegend test each Ultra-LEAF™ antibody for potential pathogens?
No, BioLegend does not test for pathogens in-house unless otherwise indicated. However, we can recommend an outside vendor to perform this testing as needed.
- Have you tested this Ultra-LEAF™ antibody for in vivo or in vitro applications?
We don't test our antibodies for in vivo or in vitro applications unless otherwise indicated. Depending on the product, the TDS may describe literature supporting usage of a particular product for bioassay. It may be best to further consult the literature to find clone specific information.
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Your actual data may vary due to variations in samples, target cells, instruments and their settings, staining conditions, and other factors.
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