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Recombinant Human FcERI/FCER1A Protein (His Tag)
SKU: PKSH030706-100
Recombinant Human FcERI/FCER1A Protein (His Tag)
| SKU # | PKSH030706 |
| Expression Host | HEK293 Cells |
Description
| Synonyms | FCE1A, FcERI |
| Species | Human |
| Expression Host | HEK293 Cells |
| Sequence | Met 1-Gln205 |
| Accession | P12319 |
| Calculated Molecular Weight | 22.5 kDa |
| Observed Molecular Weight | 42-48 kDa |
| Tag | C-His |
| Bio-activity | Immobilized Recombinant Human FcERI / FCER1A Protein (ECD,His Tag) at 2 μg/mL (100 μl/well) can bind Recombinant Human IgE-Fc Protein (Constant Domain 3&4, His Tag), the EC50 is 10-30 ng/mL. |
Properties
| Purity | > 95 % as determined by reducing SDS-PAGE. |
| Endotoxin | < 1.0 EU per μg of the protein as determined by the LAL method. |
| Storage | Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months. |
| Shipping | This product is provided as lyophilized powder which is shipped with ice packs. |
| Formulation | Lyophilized from sterile PBS, pH 7.4 Normally 5% - 8% trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the printed manual. |
| Reconstitution | Please refer to the printed manual for detailed information. |
Background
FcERI, also known as FCER1A, is the alpha subunit of the immunoglobulin epsilon receptor (IgE receptor). IgE receptor is a high affinity IgE receptor which plays a central role in allergic disease, coupling allergen and mast cell to initiate the inflammatory and immediate hypersensitivity responses that are characteristic of disorders such as hay fever and asthma. The allergic response occurs when 2 or more IgE receptors are crosslinked via IgE molecules that in turn are bound to an allergen (antigen) molecule. A perturbation occurs that brings about the release of histamine and proteases from the granules in the cytoplasm of the mast cell and leads to the synthesis of prostaglandins and leukotrienes--potent effectors of the hypersensitivity response. IgE receptor is comprised of an alpha subunit(FcERI), a beta subunit, and two gamma subunits. FcERI is glycosylated and contains 2 Ig-like (immunoglobulin-like) domains.