Recombinant SARS Spike S1-Fc-Avi Protein

Catalog No.	BP003073
Product Name	Recombinant SARS Spike S1-Fc-Avi Protein
Supplier Name	Syd Labs, Inc.
Brand Name	Syd Labs
Synonyms	2019-nCoV S Protein S1 Subunit, COVID-19 Virus Spike Protein S1 Subunit
Source	Recombinant SARS-CoV-2 Spike S1 protein (S protein S1 subunit, Gln14-Arg683) was expressed in mammalian cells with a Fc tag and Avi at the C-terminus. Accession: QHD43416.1
Formulation	The recombinant SARS-CoV-2 Spike S1-Fc-Avi protein was lyophilized from 0.22 um filtered solution in 20 mM PB (pH 7.4). Normally 5% trehalose is added as protectant before lyophilization.
Purity	> 95% by PAGE under reduced condition, and SEC-HPLC.
Endotoxin	Less than 1 EU per ug by the LAL method.
Shipping	The recombinant SARS-CoV-2 Spike S1-Fc-Avi protein is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Note	Recombinant SARS-CoV-2 S protein S1 subunit-His protein, biotinylated His-tag and Fc-fused S protein S1 subunits, SARS-CoV-2 S protein S1 antibodies, immunoassay kits, custom antibody and kit development services are available.
Order Offline	Phone: 1-617-401-8149Fax: 1-617-606-5019Email: message@sydlabs.comOr leave a message with a formal purchaseorder (PO) Or credit card.

Description

BP003073: Recombinant SARS Spike S1-Fc-Avi Protein

Background

Source: Recombinant SARS-CoV-2 Spike S1 protein (S protein S1 subunit, Gln14-Arg683) was expressed in mammalian cells with a Fc tag and Avi at the C-terminus.
Accession: QHD43416.1
Predicted molecular mass: 102.6 kDa. Due to glycosylation, the recombinant SARS-CoV-2 S protein S1 subunit migrates to 130-140 kDa based on the Bis-Tris PAGE result.
Endotoxin: Less than 1 EU per ug by the LAL method.
Activity: Immobilized recombinant human ACE2, His Tag at 0.5 ug/ml (100 ul/well). Dose response curve for the recombinant SARS-CoV-2 Spike S1-Fc-Avi protein with the EC50 of 0.1 ug/ml determined by ELISA.
Formulation: The recombinant SARS-CoV-2 Spike S1-Fc-Avi protein was lyophilized from 0.22 um filtered solution in 20 mM PB (pH 7.4). Normally 5% trehalose is added as protectant before lyophilization.
Purity: > 95% by PAGE under reduced condition, and SEC-HPLC.

Shipping: The recombinant SARS-CoV-2 Spike S1-Fc-Avi protein is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage:
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70°C as supplied.
1 month, 2 to 8°C under sterile conditions after reconstitution.
3 months, -20 to -70°C under sterile conditions after reconstitution.

There are two subunits, S1 and S2, in the SARS-CoV-2 spike (S) glycoprotein which plays the most important roles in viral attachment, fusion and entry, and serves as a target for development of virus entry inhibitors, neutralizing antibodies, and vaccines. The S1 subunit, the N-terminal 14–685 amino acids of S protein, contains N-terminal domain (NTD), receptor binding domain (RBD), and receptor binding motif (RBM). The SARS-CoV and SARS-CoV-2 S proteins mediate viral entry into host cells by binding to a host receptor, angiotensin-converting enzyme 2 (ACE2), through the receptor-binding domain (RBD) in the S1 subunit, and then fusing the viral and host membranes through the S2 subunit.

Both His-tagged and Fc-fused recombinant SARS-CoV-2 S protein S1 subunits are available with an Avi site, which is for biotinylation. The biotinylated recombinant S protein S1 subunits are also avaible. Please ask for a quote if you need S protein S1 subunit mutants or a S protein S1 subunit with different modification or components.

To check more Syd Labs SARS-CoV-2 (2019-nCoV) Antigen and Antibody Reagents and Discovery Services

Please remember our product information: Recombinant SARS Spike S1-Fc-Avi Protein: BP003073 Syd Labs

Additional information

Ship from Country	USA
Size	1 mg, 100 ug

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