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CD23 / FCER2 Antibody (FITC), Rabbit MAb

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FCER2Antibody Product Information
Immunogen:Recombinant Mouse CD23 / FCER2 protein (Catalog#50695-M07H)
Clone ID:007
Ig Type:Rabbit IgG
Concentration:10 μl/Test, 0.1 mg/ml
Formulation:Aqueous solution containing 0.5% BSA and 0.09% sodium azide
Preparation:This antibody was obtained from a rabbit immunized with purified, recombinant Mouse CD23 / FCER2 (rM CD23 / FCER2; Catalog#50695-M07H; P20693-1; Glu51-Pro331) and conjugated with FITC under optimum conditions, the unreacted FITC was removed.
FCER2Antibody Usage Guide
Specificity:Mouse CD23 / FCER2
Storage:This antibody is stable for 12 months from date of receipt when stored at 2℃-8℃. Protected from prolonged exposure to light. Do not freeze ! Sodium azide is toxic to cells and should be disposed of properly. Flush with large volumes of water during disposal.
CD23 / FCER2 Antibody (FITC), Rabbit MAb, Flow cytometric analysis
[Click to enlarge image]
Flow cytometric analysis of mouse FCER2(CD23) expression on mouse splenocytes. BABL/c splenocytes were stained with FITC-conjugated anti-Mouse FCER2(CD23). The histogram were derived from gated events with the forward and side light-scatter characteristics of viable cells.

Fc fragment of IgE, low affinity II, receptor for (CD23) or CD23 antigen is a member of the cluster of differentiation family. The cluster of differentiation (cluster of designation) (often abbreviated as CD) is a protocol used for the identification and investigation of cell surface molecules present on white blood cells initially but found in almost any kind of cell of the body, providing targets for immunophenotyping of cells. Physiologically, CD molecules can act in numerous ways, often acting as receptors or ligands (the molecule that activates a receptor) important to the cell. A signal cascade is usually initiated, altering the behavior of the cell (see cell signaling). Some CD proteins do not play a role in cell signaling, but have other functions, such as cell adhesion. CD23/FCER2 is a B-cell specific antigen, and a low-affinity receptor for IgE. It has essential roles in B cell growth and differentiation, and the regulation of IgE production. This protein also exists as a soluble secreted form, then functioning as a potent mitogenic growth factor. Increased levels of soluble CD23/FCER2 cause the recruitment of non-sensitised B-cells in the presentation of antigen peptides to allergen-specific B-cells, therefore increasing the production of allergen specific IgE. IgE, in turn, is known to upregulate the cellular expression of CD23 and Fc epsilon RI (high-affinity IgE receptor).

  • Aubry JP, et al. (1992) CD21 is a ligand for CD23 and regulates IgE production. Nature. 358(6386): 505-7.
  • Punnonen J, et al. (1993) Interleukin 13 induces interleukin 4-independent IgG4 and IgE synthesis and CD23 expression by human B cells. Proc Natl Acad Sci U S A. 90(8): 3730-4.
  • Yu P, et al. (1994) Negative feedback regulation of IgE synthesis by murine CD23. Nature. 369(6483): 753-6.
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    • CD23 / FCER2 Antibody (FITC), Rabbit MAb, Flow cytometric analysis
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