Recombinant Human High Affinity Immunoglobulin Epsilon Receptor Subunit Alpha (FCER1A) Protein (His-SUMO)

Name: Recombinant Human High Affinity Immunoglobulin Epsilon Receptor Subunit Alpha (FCER1A) Protein (His-SUMO)
Brand: Beta LifeScience
SKU: BLC-02900P
Availability: InStock

Greater than 90% as determined by SDS-PAGE.

Collections: Fc receptors, Featured fc receptors molecules, High-quality recombinant proteins

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Product Overview

Description	Recombinant Human High Affinity Immunoglobulin Epsilon Receptor Subunit Alpha (FCER1A) Protein (His-SUMO) is produced by our E.coli expression system. This is a extracellular protein.
Purity	Greater than 90% as determined by SDS-PAGE.
Uniprotkb	P12319
Target Symbol	FCER1A
Synonyms	Fc epsilon RI alpha; Fc epsilon RI alpha chain ; Fc epsilon RI alpha-chain; Fc fragment of IgE high affinity I receptor for alpha polypeptide; Fc fragment of IgE; high affinity I; receptor for; alpha subunit; Fc fragment of IgE; high affinity I; receptor for; alpha polypeptide; Fc IgE receptor alpha polypeptide; Fc IgE receptor; alpha chain; Fc IgE receptor; alpha polypeptide; Fc of IgE high affinity I receptor for alpha polypeptide; Fc-epsilon RI-alpha; FCE 1A; FCE1A; FCER 1A; Fcer1a; FCERA_HUMAN; FceRI alpha; FcERI; high affinity IgE receptor; High affinity immunoglobulin epsilon receptor alpha subunit; high affinity immunoglobulin epsilon receptor alpha-subunit; High affinity immunoglobulin epsilon receptor subunit alpha; IgE Fc receptor alpha subunit; IgE Fc receptor subunit alpha; Immunoglobulin E receptor high affinity of mast cells alpha polypeptide ; immunoglobulin E receptor; high-affinity; of mast cells; alpha polypeptide
Species	Homo sapiens (Human)
Expression System	E.coli
Tag	N-6His-SUMO
Target Protein Sequence	VPQKPKVSLNPPWNRIFKGENVTLTCNGNNFFEVSSTKWFHNGSLSEETNSSLNIVNAKFEDSGEYKCQHQQVNESEPVYLEVFSDWLLLQASAEVVMEGQPLFLRCHGWRNWDVYKVIYYKDGEALKYWYENHNISITNATVEDSGTYYCTGKVWQLDYESEPLNITVIKAPREKYWLQ
Expression Range	26-205aa
Protein Length	Extracellular Domain
Mol. Weight	37.0kDa
Research Area	Immunology
Form	Liquid or Lyophilized powder
Buffer	Liquid form: default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. Lyophilized powder form: the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Reconstitution	Briefly centrifuged the vial prior to opening to bring the contents to the bottom. Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. It is recommended to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. The default final concentration of glycerol is 50%.
Storage	1. Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. 2. Avoid repeated freeze-thaw cycles. 3. Store working aliquots at 4°C for up to one week. 4. In general, protein in liquid form is stable for up to 6 months at -20°C/-80°C. Protein in lyophilized powder form is stable for up to 12 months at -20°C/-80°C.
Notes	Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Target Details

Target Function	Binds to the Fc region of immunoglobulins epsilon. High affinity receptor. Responsible for initiating the allergic response. 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.
Subcellular Location	Cell membrane; Single-pass type I membrane protein.
Database References	HGNC: 3609 OMIM: 147140 KEGG: hsa:2205 STRING: 9606.ENSP00000357097 UniGene: PMID: 29243845 Data show that each IgE Fc is targeted by two single-domain antibodies (sdabs) having an epitope largely distinct from the FcepsilonRI binding site but overlapping significantly with the CD23-binding site. PMID: 29295972 Autoreactive CD4(+) T cells that target FcepsilonRIalpha were detected in most subjects with chronic spontaneous urticaria, with a cytokine secretion profile more typical of a TH1-cell response. Our findings suggest that measurement of T-cell as well as autoantibody responses to FcepsilonRIalpha could improve diagnostic accuracy in subjects with chronic spontaneous urticaria . PMID: 27417022 Our results suggest that IL13 rs20541, IL4 rs2243250, ADRB2 rs1042713, and FCER1B rs569108, four SNPs with significant sole effect on asthma, interact to confer a higher risk for the disease in Chinese Han children. PMID: 26613553 F-AFE containing anti-allergic phytochemicals, including arctigenin, inhibited the activation of the FceRI receptor induced by the antigenIgE complex PMID: 26707911 IgG2 and IgG3 are involved in recruiting CD32 to inhibit activation of FcepsilonRI in human basophils. PMID: 26774660 Asthmatics with reduced lung function had a higher frequency of Lin(-) CD34(hi) CD117(int/hi) Fc epsilon RI(+) blood mast cell progenitors than asthmatics with normal lung function. PMID: 26626992 SNPs of FcepsilonR1alpha promoter region may be used as disease markers for IgE-mediated allergic inflammation caused by Dermatophagoides pteronyssinus. PMID: 25923080 FcepsilonRI alpha-chain is an activating platelet endothelium aggregation receptor 1 (PEAR1) ligand. PMID: 25713122 Tetraspanin CD151 Is a Negative Regulator of FcepsilonRI-Mediated Mast Cell Activation PMID: 26136426 These data suggest that rs2298805 might be associated with risk for Chronic urticaria and the therapeutic efficacy of nonsedating H1-antihistamines in Chinese patients PMID: 25412950 FCER2 polymorphism rs3760687 affects moderately elevated total serum IgE levels, especially in the absence of homozygosity for the risk allele of FCER1A SNP rs2427837. PMID: 24354852 Data indicate that antigen (Ag) targeting to FcepsilonRI inhibits the development of Ag-specific T cell immunity and induces T cell tolerance. PMID: 24610015 FCER1A expressing dendritic cells and monocytes but not basophils, significantly contribute to serum hIgE clearance. PMID: 24569373 elevated levels of surface-bound proteins on cord blood basophils is associated with maternal allergy PMID: 23980848 Genetic polymorphism is associated with IgE levels in asthmatics in Germany PMID: 23725541 Overexpression of miR-142-3p enhances FcepsilonRI-mediated degranulation. PMID: 24361879 We assayed the genotype and allele frequencies of rs2298804 (251 A>G) in the FCER1A gene, in patients with Systemic Lupus Erythematosus in a Chinese Han population and found a significant difference for both the AG genotype and the G allele PMID: 23621092 no association between SNP in the FCER1A gene region and serum total IgE level in Chinese allergic rhinitis patients PMID: 22800345 Expression of high-affinity IgE receptor on human peripheral blood dendritic cells in children PMID: 22384272 Mutation in IgE receptor is associated with mast-cell leukemia. PMID: 22173243 Linkage disequilibrium and the distribution of haplotypes for two identified human FCER1A 3'-UTR polymorphisms and several previously reported 5'-flanking region and 5'-UTR variants in Japanese and Poles, is described. PMID: 21725845 genetic polymorphisms in the promoter region is associated with atopic dermatitis in a Han Chinese population PMID: 22222815 increased FcepsilonRI expression on alveolar mast cells is a novel disease-specific feature of allergic asthma. PMID: 21958156 Data show that the developed method allows for comparative analysis of sFcepsilonRI levels in health and disease. PMID: 21903095 There were no significant relationships between FcepsilonRI and atopic dermatitis, although there were trends towards an association between the 66T>C (rs2251746) polymorphism and total serum IgE levels. PMID: 21738338 FcepsilonRI transgene on dendritic cells drives the cascade of pathogenic reactions linking the initial allergen capture by IgE with subsequent T helper (Th)2-dominated T cell responses and the development of late-phase allergic tissue inflammation. PMID: 21622859 The crystal structure of IgE bound to FcepsilonRI is determined. PMID: 21516097 SNPs in the FCER1A gene region show no association with allergic rhinitis in a Han Chinese population PMID: 21209833 Data indicate that although results rather show the lack of an association between FCER1A rs41264475 mutation and atopic dermatitis, they suggest that its minor allele can predispose to the concomitant asthma in AD patients. PMID: 21216468 The ability of four synthetic and sequence-specific RNA interfering antisense oligodeoxynucleotides (AS-ODNs) to reduce the expression of FcepsilonRIalpha gene in granulocytes of allergy sufferers in vitro, was investigated. PMID: 19697153 Secretagogue stimulation results in an increase in the immature p46 form of FcepsilonRIalpha due to reversal of degradative pathways rather than increased synthesis of FcepsilonRIalpha. PMID: 20664273 FCER1A variants by themselves and in combination influence IgE levels and act synergistically to influence eczema risk. PMID: 20028371 Data suggest a contribution of Fc epsilonRI alpha and gamma chains either to immunosurveillance or pathophysiology of the intestinal epithelium. PMID: 20126404 FcRIalpha gene variants are involved in the pathogenesis of IBD. PMID: 20163202 Data show that atopic dermatitis patients with the FCER1A -315CT/TT genotype tended to have higher total serum IgE levels. PMID: 20141544 Glucose can augment Fc epsilon RI-mediated mast cell activation, particularly the degranulation response and LTC(4) secretion after prolonged culture of mast cells with high-glucose medium. PMID: 20523060 counterregulation of FcepsilonRI and TLR-7 pathways exists in Plasmacytoid dendritic cells PMID: 20410486 genetic polymorphismn, mutational screening and asthma association studies; review PMID: 18726713 SP downregulated expression of FcepsilonRI in a concentration dependent manner; the effect was mediated by the neurokinin-1 receptor and resulted in reduced mast cell activation. PMID: 20117843 Expression of FcepsilonRI was significantly elevated on respiratory tract dendritic cells (RTDC) from atopic as compared to nonatopic patients. PMID: 19385959 homozygosity for the C allele of FcepsilonRI alpha chain variant is associated with lower IgE levels PMID: 12070183 Regulation of FcepsilonRI-mediated degranulation by an adaptor protein 3BP2 in rat basophilic leukemia RBL-2H3 cells. PMID: 12200378 Transcriptional regulation of the high affinity IgE receptor alpha-chain gene. PMID: 12217383 Efficient folding of the FcepsilonRI alpha-chain membrane-proximal domain D2 depends on the presence of the N-terminal domain D1. PMID: 12270716 mast cells modulate the immune system following TLR4-mediated activation and FcepsilonRI aggregation PMID: 12855579 In clinically uninvolved skin, Langerhans' cell-surface Fc epsilon RI expression is not only linked to atopic dermatitis but is also generally associated with allergic disease. PMID: 12897750 T/C polymorphism in Fc epsilon RI alpha-chain promoter at nucleotide position -66 is associated with allergic diseases in a Japanese population. PMID: 12902495 Fc epsilon RI-mediated calcium flux (dependent on PLC gamma 1) leads to degranulation of mast cells independent of PI 3-kinase PMID: 13129935 Results indicate that interleukin-4, together with recombinant human stem cell factor, can induce T cell maturation from cord blood progenitor cells, and that IL-4 increased the expression of FcepsilonRI on fetal liver mast cells. PMID: 14746805

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.