SARS Spike S1 Protein (SAR-VM5S1)

Express System: HEK293
Product Tag: C-hFc-Avi
Purity: > 95% as determined by Tris-Bis PAGE;> 95% as determined by HPLC
Activity: Immobilized SARS Spike S1, hFc Tag at 1ug/ml (100ul/well) on the plate. Dose response curve for Human ACE2, His Tag with the EC50 of 0.21ug/ml determined by ELISA. See testing image for detail.
Exact Sequence: Ser14-Arg667

Catalog: SAR-VM5S1

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Product Description	Recombinant SARS spike S1 protein is expressed from HEK293 with hFc tag and Avi tag at the C-Terminus.It contains Ser14-Arg667.
Product Background	The spike protein (S) of coronavirus (CoV) attaches the virus to its cellular receptor, angiotensin-converting enzyme 2 (ACE2). A defined receptor-binding domain (RBD) on S mediates this interaction.The S protein plays key parts in the induction of neutralizing-antibody and T-cell responses, as well as protective immunity.
Product Category	Recombinant Protein

Target	Spike S1
Synonyms	S1 protein; Spike protein S1; Spike,S1 protein; S glycoprotein Subunit1
Gene/Protein ID	P59594
Species	SARS
Exact Sequence	Ser14-Arg667
Molecular Weight	The protein has a predicted MW of 100.6 kDa. Due to glycosylation, the protein migrates to 120-140 kDa based on Tris-Bis PAGE result.
Activity	Immobilized SARS Spike S1, hFc Tag at 1ug/ml (100ul/well) on the plate. Dose response curve for Human ACE2, His Tag with the EC50 of 0.21ug/ml determined by ELISA. See testing image for detail.
Product Tag	C-hFc-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 0.22um 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 SARS Spike S1, hFc Tag at 1ug/ml (100ul/well) on the plate. Dose response curve for Human ACE2, His Tag with the EC50 of 0.21ug/ml determined by ELISA.
	The purity of-SARS spike S1 is greater than 95% as determined by SEC-HPLC.
	SARS Spike S1 on Tris-Bis PAGE under reduced condition. The purity is greater than 95%.