- EBVCS-5 (See other available formats)
- Other Names
- Leu-20, FcεRII, IgE Fc Receptor, BLAST-2, B6, Low affinity IgE receptor
- Mouse IgG1, κ
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- Product Citations
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CD23 is a 45 kD protein, also known as Leu-20, FcεRII, IgE Fc receptor, BLAST-2, B6, and low affinity IgE receptor. It is a member of the Ig family, expressed on most mature B cells, B cells in follicular mantle (but not in proliferating germinal center cells, follicular dendritic cells, monocytes, eosinophils, Langerhans cells, and a subset of T cells (10-15% of tonsillar T cells). CD23 responds to high levels of IgE by downregulating IgE secretion. In human monocytes, CD23 triggering results in release of pro-inflammatory cytokines including TNF-α, IL-1, IL-6, and GM-CSF. CD23 can be proteolytically cleaved to generate soluble CD23 fragments of various molecular weights. In chronic lymphocytic leukemia, levels of soluble CD23 in the serum can be used as a prognostic marker to identify patients at high risk for disease progression. Alternate splicing of exon 2 can also generate two cell-surface isoforms of CD23 differing by 6 amino acids in their cytoplasmic region.Product Details
- Antibody Type
- Host Species
- Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide and 0.2% (w/v) BSA (origin USA).
- The antibody was purified by affinity chromatography, and conjugated with FITC under optimal conditions.
- Lot-specific (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, and protected from prolonged exposure to light. 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 5 µl per million cells in 100 µl staining volume or 5 µl per 100 µl of whole blood.
- Excitation Laser
Blue Laser (488 nm)
(PubMed link indicates BioLegend citation)
- Sugden B and Metzenberg S. 1983. J. Virol. 46:800-807.
AB_1501125 (BioLegend Cat. No. 338505)
AB_1501115 (BioLegend Cat. No. 338506)
- Ig family member, type II transmembrane glycoprotein, 45 kD
B cells, follicular dendritic cells, monocytes, eosinophils, a subset of T cells, Langerhans cells
- Regulation of IgE synthesis in human monocytes; CD23 triggering results in release of pro-inflammatory cytokines including TNF-a, IL-1, IL-6, and GM-CSF
- IgE, CD19/CD21/CD81
- Cell Type
- B cells, Dendritic cells, Eosinophils, Langerhans cells, Monocytes, T cells
- Biology Area
- Molecular Family
- CD Molecules, Fc Receptors
- Antigen References
1. Ludin C, et al. 1987. EMBO J. 6:109.
2. Delespesse G, et al. 1992. Immunol. Rev. 125:77.
3. Flores-Romo L, et al. 1993. Science 261:1038.
4. Armant M, et al. 1994. J. Exp. Med. 180:1005.
- Gene ID
- 2208 View all products for this Gene ID
- View information about CD23 on UniProt.org
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