Human Fc epsilon RI alpha Protein, Fc Tag (MALS & BLI verified)

High affinity immunoglobulin epsilon receptor subunit alpha (FCER1A) is also known as Fc-epsilon RI-alpha (FcERI), IgE Fc receptor subunit alpha, FCE1A. FCER1A contains two Ig-like (immunoglobulin-like) domains. FCER1A binds to the Fc region of immunoglobulins epsilon and is a high affinity receptor. FCER1A is responsible for initiating the allergic response, which binding of allergen to receptor-bound IgE leads to cell activation and the release of mediators (such as histamine) responsible for the manifestations of allergy. The same receptor also induces the secretion of important lymphokines. FCER1A 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.

Product Specifications

Background

Specifications

This protein carries a human IgG1 Fc tag at the C-terminus. The protein has a calculated MW of 47.3 kDa. The protein migrates as 60-75 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.

Accession Number

P12319-1

Expression Region

Val 26 - Leu 204

Host

HEK293

Target

Fc epsilon RI alpha

Conjugation

Unconjugated

Tag

C-Fc

Source

Human

Stability

-20°C to -70°C for 12 months in lyophilized state; -70°C for 12 months under sterile conditions after reconstitution. For long term storage, the product should be stored at lyophilized state at -20°C or lower.

Endotoxin

1.0 EU per μg

Purity

95%

Bioactivity

Immobilized Human Fc epsilon RI alpha, Fc Tag (Cat. No. FCA-H5259) at 5 μg/mL (100 μL/well) can bind Human IgE Fc, His Tag (Cat. No. IGE-H52H9) with a linear range of 0.6-20 ng/mL (Routinely tested).