CD23 Recombinant Protein | FCER2 recombinant protein

CD23 Protein, Human, Recombinant (His Tag)

Cat. Num. AAA8120144

• Gene Names: FCER2; CD23; FCE2; CD23A; IGEBF; CLEC4J; BLAST-2
• Purity: >96% as determined by SDS-PAGE
• Synonyms: CD23; CD23 Protein; Human; Recombinant (His Tag); Human CD23/FCER2 Protein (His Tag); BLAST-2 Protein; CD23A Protein; CLEC-6 Protein; CLEC4J Protein; CLEC6 Protein; CLECSF8 Protein; FCE2 Protein; IGEBF Protein; MCL Protein; MGC40078 Protein; MPCL Protein; Fc fragment of IgE receptor II; FCER2 recombinant protein

• Host: HEK293 Cells
• Purity/Purification: >96% as determined by SDS-PAGE
• Form/Format: Lyophilized from sterile PBS, pH7.4. Normally 5%-8% trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.
• Sequence: Asp48-Ser321

• Species: Human
• Endotoxin: <1.0EU per ug of the protein as determined by the LAL method
• Predicted N Terminal: His
• Tag: N-His
• Protein Construction: A DNA sequence encoding the human CD23 isoform 2 (P06734-1) extracellular domain (Asp 48-Ser 321) was expressed, with a polyhistidine tag at the N-terminus.
• Reconstitution: A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
• Preparation and Storage: Samples are stable for up to twelve months from date of receipt at -20 degree C to -80 degree C. Store it under sterile conditions at -20 degree C to -80 degree C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.; In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid.; They are shipped out with blue ice.

SDS-Page

Related Product Information for FCER2 recombinant protein

Background: 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).

Product Categories/Family for FCER2 recombinant protein

Fc Receptors ITIM/ITAM Immunoreceptors and Related Molecules

References

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.

NCBI and Uniprot Product Information

• NCBI GI #: 119862
• NCBI GeneID: 2208
• UniProt Accession #: P06734
• Molecular Weight: 321
• NCBI Official Full Name: Low affinity immunoglobulin epsilon Fc receptor
• NCBI Official Synonym Full Names: Fc fragment of IgE, low affinity II, receptor for (CD23)
• NCBI Official Symbol: FCER2
• NCBI Official Synonym Symbols: CD23; FCE2; CD23A; IGEBF; CLEC4J; BLAST-2
• NCBI Protein Information: low affinity immunoglobulin epsilon Fc receptor; CD23 antigen; fc-epsilon-RII; lymphocyte IgE receptor; immunoglobulin E-binding factor; C-type lectin domain family 4, member J
• UniProt Protein Name: Low affinity immunoglobulin epsilon Fc receptor
• Protein Family: Low affinity immunoglobulin epsilon Fc receptor
• UniProt Gene Name: FCER2
• UniProt Synonym Gene Names: CD23A; CLEC4J; FCE2; IGEBF
• UniProt Entry Name: FCER2_HUMAN

NCBI Description

The protein encoded by this gene 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. Alternatively spliced transcript variants encoding different isoforms have been described for this gene.[provided by RefSeq, Jul 2011]

Uniprot Description

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 (it is a B-cell-specific antigen).