- M-A251 (See other available formats)
- Regulatory Status
- IV A053
- Other Names
- IL-2 receptor α chain, Low affinity IL-2R, IL-2Rα chain
- Mouse IgG1, κ
- Ave. Rating
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- Product Citations
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CD25 is a 55 kD type I transmembrane glycoprotein also known as low affinity IL-2 receptor α chain or Tac. It is expressed on progenitor lymphocytes, activated T and B cells, and activated monocytes/macrophages. CD25 is also expressed on a subset of non-stimulated CD4+ T cells termed T regulatory cells. Soluble CD25/IL-2Rα is produced as a consequence of lymphocyte stimulation and is found in biological fluids following inflammatory responses. CD25 associates with IL-2 receptor β (CD122) and common γ (CD132) chains to form a high affinity IL-2R complex.Product Details
- Human, Cross-Reactivity: Baboon, Cynomolgus, Rhesus
- Antibody Type
- Host Species
- Human PHA-induced lymphocyte cells
- Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide.
- The antibody was purified by affinity chromatography and conjugated with biotin under optimal conditions.
- 0.5 mg/ml
- Storage & Handling
- The antibody solution should be stored undiluted between 2°C and 8°C. Do not freeze.
FC - Quality tested
- 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 ≤0.5 µg per million cells in 100 µl volume. It is recommended that the reagent be titrated for optimal performance for each application.
- Application Notes
Additional reported applications (for the relevant formats) include: immunohistochemical staining of paraformaldehyde fixed frozen sections.1
The CD25 molecule reveals three epitope regions: A, B, and C. M-A251 antibody recognizes epitope region B. Unlike other CD25 antibody clones, M-A251 can detect CD25 after fixation with paraformaldehyde.
(PubMed link indicates BioLegend citation)
- Li H and Pauza CD. 2015. Eur. J. Immunol. 45:298. (IHC)
AB_2563524 (BioLegend Cat. No. 356123)
AB_2563525 (BioLegend Cat. No. 356124)
- Type I transmembrane glycoprotein, 55 kD; low-affinity IL-2 receptor α chain
Activated T and B cells, monocytes/macrophages, Tregs
- Associates with IL-2Rβ/CD122 and IL-2Rγ/CD132 receptor chains to form a high-affinity IL-2R complex
- Cell Type
- B cells, Macrophages, Monocytes, T cells, Tregs
- Biology Area
- Cell Biology, Immunology, Neuroscience, Neuroscience Cell Markers
- Molecular Family
- CD Molecules, Cytokine/Chemokine Receptors
- Antigen References
1. Knapp W, et al. 1989. Leucocyte Typing IV: White Cell Differentiation Antigens. Oxford University Press.
2. Schlossman S, et al. 1995. Leucocyte Typing V: White Cell Differentiation Antigens. Oxford University Press.
3. Barclay N, et al. 1997. The Leukocyte Antigen FactsBook. Academic Press Inc.
4. Taniguchi T and Minami Y. et al. 1993. Cell 73:5.
5. Waldmann T. 1991. J. Biol. Chem. 266:2681.
- Gene ID
- 3559 View all products for this Gene ID
- View information about CD25 on UniProt.org
- How many biotin molecules are per antibody structure?
- We don't routinely measure the number of biotins with our antibody products but the number of biotin molecules range from 3-6 molecules per antibody.
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