CD23 is a calcium dependent transmembrane glycoprotein which is expressed in many cell types. The cytoplasmic region of the protein has two isoforms the 'a' isoform that participates in IgE-regulated endocytosis, and the 'b' isoform, which is involved in IgE-regulated phagocytosis. It has been found that there are at least four soluble forms of the CD23 protein (sCD23) all of which are produced by the activity of metallo/cysteine proteases. In addition to binding IgE, sCD23 have been shown to promote the activation and differentiation of B-cells and stimulate the release of pro-inflammatory cytokines from monocytes.
Product Name- Recombinant Human sCD23 (FCER2)
Aliases- Low affinity µmmunoglobulin epsilon Fc receptor, BLAST-2, Fc-epsilon-RII, µmmunoglobulin E-binding factor, Lymphocyte IgE receptor, CD23, B cell differentiation antigen
- Recombinant Human C-type Lectin Domain Family 4 Member J (FCER2)
Formulation- Lyophilized from a 0.2 µm filtered solution in PBS
Endotoxin Level- <1.0 EU/µg of recombinant protein as determined by the LAL method.
Storage Condition- The lyophilized protein is stable for at least one year from date of receipt at -70°C. Upon reconstitution, this cytokine can be stored in working aliquots at +2° to +8°C for one month, or at -20°C for six months, with a carrier protein without detectable loss of activity. Avoid repeated freeze/thaw cycles.