Biotinylated Human IgE Protein (IGE-HM401B)

Express System: HEK293
Product Tag: C-His-Avi
Purity: > 95% as determined by Tris-Bis PAGE;> 95% as determined by HPLC
Biotinylated: yes
Activity: Immobilized Biotinylated Human IgE, His Tag at 0.5ug/ml (100ul/well) on the streptavidin precoated plate (5ug/ml). Dose response curve for Anti-IgE Antibody, hFc Tag with the EC50 of 5.0ng/ml determined by ELISA. See testing image for detail.
Exact Sequence: Cys209-Lys428

Catalog: IGE-HM401B

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Product Description	Recombinant Biotinylated Human IgE Protein is expressed from HEK293 with His and Avi tag at the C-Terminus.It contains Cys209-Lys428.
Product Background	Immunoglobulin E (IgE) is well known for its role in allergic disease, the manifestations of which are mediated through its two Fc receptors, FcεRI and CD23 (FcεRII). IgE and its interactions with these receptors are therefore potential targets for therapeutic intervention, and exciting progress has been made in this direction. Furthermore, recent structural studies of IgE-Fc, the two receptors, and of their complexes, have revealed a remarkable degree of plasticity at the IgE-CD23 interface and an even more remarkable degree of dynamic flexibility within the IgE molecule.
Product Category	Recombinant Protein

Target	IgE
Gene/Protein ID	P01854-1
Species	Human
Exact Sequence	Cys209-Lys428
Molecular Weight	The protein has a predicted MW of 27.8 kDa. Due to glycosylation, the protein migrates to 32-38 kDa based on Tris-Bis PAGE result.
Activity	Immobilized Biotinylated Human IgE, His Tag at 0.5ug/ml (100ul/well) on the streptavidin precoated plate (5ug/ml). Dose response curve for Anti-IgE Antibody, hFc Tag with the EC50 of 5.0ng/ml determined by ELISA. See testing image for detail.
Product Tag	C-His-Avi
Express System	HEK293
Purity	> 95% as determined by Tris-Bis PAGE;> 95% as determined by HPLC
Endotoxin	Less than 1EU per ug by the LAL method.

Form	Lyophilized
Shipping	Shipped at ambient temperature.
Formulation	Lyophilized from 0.22 um filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.
Reconstitution	Centrifuge the tube before opening. Reconstituting to a concentration more than 100 ug/ml is recommended. Dissolve the lyophilized protein in distilled water.
Stability And Storage	Reconstituted protein stable at -80°C for 12 months, 4°C for 1 week. Use a manual defrost freezer and avoid repeated freeze-thaw cycles.

	Immobilized Biotinylated Human IgE, His Tag at 0.5ug/ml (100ul/well) on the streptavidin precoated plate (5ug/ml). Dose response curve for Anti-IgE Antibody, hFc Tag with the EC50 of 5.0ng/ml determined by ELISA.
	The purity of Biotinylated Human IgE is greater than 95% as determined by SEC-HPLC.
	Biotinylated Human IgE on Tris-Bis PAGE under reduced condition. The purity is greater than 95%.