Biotinylated Recombinant SARS-CoV-2 Spike RBD-His-Avi

Catalog No.	BP003051
Product Name	Biotinylated Recombinant SARS-CoV-2 Spike RBD-His-Avi
Supplier Name	Syd Labs, Inc.
Brand Name	Syd Labs
Synonyms	COVID-19 Virus Spike RBD, 2019-nCoV S1 RBD, Receptor-Binding Domain
Source	recombinant SARS-CoV-2 Spike RBD (S1 RBD, Arg319-Asn532) was expressed in mammalian cells with a His tag and Avi at the C-terminus.
Formulation	The biotinylated recombinant SARS-CoV-2 Spike RBD-His-Avi 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 product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Note	His-tagged and Fc-fused SARS-CoV-2 S1 RBD proteins are available. Please ask for a quote if you need S1 RBD protein mutants or a protein with different modification or components.
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

BP003051: Biotinylated Recombinant SARS-CoV-2 Spike RBD-His-Avi

Background

Source: recombinant SARS-CoV-2 Spike RBD (S1 RBD, Arg319-Asn532) was expressed in mammalian cells with a His tag and Avi at the C-terminus.
Accession: QHD43416.1
Predicted molecular mass: 27 kDa. Due to glycosylation, the biotinylated recombinant SARS-CoV-2 S1 RBD migrates to 36-40 kDa based on the Bis-Tris PAGE result.
Endotoxin: Less than 1 EU per ug by the LAL method.
Activity: Immobilized biotinylated recombinant SARS-CoV-2 Spike RBD-His-Avi protein at 1 ug/ml (100 ul/well). Dose response curve for the recombinant human ACE2-Fc fusion protein with the EC50 of 100 ng/ml determined by ELISA.
Formulation: The biotinylated recombinant SARS-CoV-2 Spike RBD-His-Avi 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 product 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.

The receptor binding domain (RBD) in the S1 subunit, or called S1 RBD, of the SARS-CoV-2 spike (S) glycoprotein 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. There are two subunits, S1 and S2, in the SARS-CoV-2 spike (S) glycoprotein. 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), and then fusing the viral and host membranes through the S2 subunit. The ACE2-binding affinity of the Spike RBD of SARS-CoV-2 is 10- to 20-fold higher than that of SARS-CoV.

Both His-tagged and Fc-fused recombinant SARS-CoV-2 S1 RBD are available with an Avi site, which is for biotinylation. Please ask for a quote if you need protein mutants or a protein 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: Biotinylated Recombinant SARS-CoV-2 Spike RBD-His-Avi: BP003051 Syd Labs

Additional information

Ship from Country	USA
Size	400 ug, 50 ug

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