FCER2 Antibody
Purified Mouse Monoclonal Antibody
- SPECIFICATION
- CITATIONS
- PROTOCOLS
- BACKGROUND
Application ![]()
| FC, E |
---|---|
Primary Accession | P06734 |
Reactivity | Human |
Host | Mouse |
Clonality | Monoclonal |
Clone Names | 5B5 |
Isotype | IgG1 |
Calculated MW | 37kDa |
Description | The human leukocyte differentiation antigen CD23 (FCE2) is a key molecule for B-cell activation and growth. It is the low-affinity receptor for IgE. The truncated molecule can be secreted, then functioning as a potent mitogenic growth factor.(supplied by OMIM) . It is expressed on most mature, conventional B cells (but not on peritoneal CD5+ B cells), and can also be found on the surface of T cells, macrophages, platelets and EBV transformed B lymphoblasts. Expression of CD23 has been detected in neoplastic cells from cases of B cell chronic Lymphocytic leukemia. CD23 is expressed by B cells in the follicular mantle but not by proliferating germinal centre cells. CD23 is also expressed by eosinophils. CD23 is distinct from the high affinity IgE receptors found on basophils and mast cells, which mediate allergic reactions. The low affinity receptors are thought to play a role in isotype specific immunoregulation. The regulation of CD23 surface expression appears to be integral with the complex IgE system, which involves interactions of cells, cytokines, antibodies and regulatory factors. CD23 has been described as a “membrane bound cytokine,"in that the soluble cleavage products of CD23 are themselves able to act as cytokines in vitro. |
Immunogen | Purified recombinant fragment of human FCER2 expressed in E. Coli. |
Formulation | Ascitic fluid containing 0.03% sodium azide. |
Gene ID | 2208 |
---|---|
Other Names | Low affinity immunoglobulin epsilon Fc receptor, BLAST-2, C-type lectin domain family 4 member J, Fc-epsilon-RII, Immunoglobulin E-binding factor, Lymphocyte IgE receptor, CD23, Low affinity immunoglobulin epsilon Fc receptor membrane-bound form, Low affinity immunoglobulin epsilon Fc receptor soluble form, FCER2, CD23A, CLEC4J, FCE2, IGEBF |
Dilution | FC~~1/200 - 1/400 |
Storage | Maintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles. |
Precautions | FCER2 Antibody is for research use only and not for use in diagnostic or therapeutic procedures. |
Name | FCER2 |
---|---|
Synonyms | CD23A, CLEC4J, FCE2, IGEBF |
Function | Low-affinity receptor for immunoglobulin E (IgE) and CR2/CD21. Has essential roles in the regulation of IgE production and in the differentiation of B cells. On B cells, initiates IgE-dependent antigen uptake and presentation to T cells (PubMed:2167225). On macrophages, upon IgE binding and antigen cross-linking induces intracellular killing of parasites through activation of L-Arginine- nitric oxide pathway (PubMed:7544003). |
Cellular Location | Cell membrane; Single-pass type II membrane protein. Cell membrane; Lipid-anchor. Secreted. Note=Also exists as a soluble excreted form, sCD23 |
Tissue Location | Detected in urine (at protein level). |

Thousands of laboratories across the world have published research that depended on the performance of antibodies from Abcepta to advance their research. Check out links to articles that cite our products in major peer-reviewed journals, organized by research category.
info@abcepta.com, and receive a free "I Love Antibodies" mug.
Provided below are standard protocols that you may find useful for product applications.
References
1. J Cutan Pathol. 2009 Feb;36(2):206-10. 2. Environ Mol Mutagen. 2009 May;50(4):285-90.

If you have used an Abcepta product and would like to share how it has performed, please click on the "Submit Review" button and provide the requested information. Our staff will examine and post your review and contact you if needed.
If you have any additional inquiries please email technical services at tech@abcepta.com.