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Your Position: Home > Viral Proteins > Spike S1 > S1D-C5256

SARS-CoV-2 S1 protein (L18F, D80A, D215G, LAL242-244del, R246I, K417N, E484K, N501Y, D614G), Fc Tag

  • Synonym
    Spike,S1 protein,Spike glycoprotein Subunit1,S glycoprotein Subunit1,Spike protein S1
  • Source
    SARS-CoV-2 S1 protein, Fc Tag (S1D-C5256) is expressed from human 293 cells (HEK293). It contains AA Val 16 - Arg 685 (Accession # QHD43416.1). The mutations (L18F, D80A, D215G, LAL242-244del, R246I, K417N, E484K, N501Y, D614G) were identified in the SARS-CoV-2 variant (known as B.1.351 or 20C/501Y.V2) which emerged in the South Africa.
    Predicted N-terminus: Val 16
  • Molecular Characterization

    This protein carries a human IgG1 Fc tag at the C-terminus.

    The protein has a calculated MW of 101.1 kDa. The protein migrates as 125-150 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

  • Endotoxin
    Less than 1.0 EU per μg by the LAL method.
  • Purity

    >95% as determined by SDS-PAGE.

  • Formulation

    Lyophilized from 0.22 μm filtered solution in 50 mM Tris, 100 mM Glycine, 25 mM Arginine, 150 mM NaCl, pH7.5. Normally trehalose is added as protectant before lyophilization.

    Contact us for customized product form or formulation.

  • Reconstitution

    Please see Certificate of Analysis for specific instructions.

    For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

  • Storage

    For long term storage, the product should be stored at lyophilized state at -20°C or lower.

    Please avoid repeated freeze-thaw cycles.

    This product is stable after storage at:

    1. -20°C to -70°C for 12 months in lyophilized state;
    2. -70°C for 3 months under sterile conditions after reconstitution.
SDS-PAGE
SARS-CoV-2 S1 protein, Fc Tag (Cat. No. S1D-C5256) SDS-PAGE gel

SARS-CoV-2 S1 protein, Fc Tag on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 95%.

Bioactivity-ELISA
SARS-CoV-2 S1 protein, Fc TagSARS-CoV-2 S1 protein, Fc Tag (Cat. No. S1D-C5256) ELISA bioactivity

Immobilized Human ACE2, His Tag (Cat. No. AC2-H52H8) at 2 μg/mL (100 μL/well) can bind SARS-CoV-2 S1 protein, Fc Tag (Cat. No. S1D-C5256) with a linear range of 2-25 ng/mL (QC tested).

  • Background
    It's been reported that Coronavirus can infect the human respiratory epithelial cells through interaction with the human ACE2 receptor. The spike protein is a large type I transmembrane protein containing two subunits, S1 and S2. S1 mainly contains a receptor binding domain (RBD), which is responsible for recognizing the cell surface receptor. S2 contains basic elements needed for the membrane fusion.The S protein plays key parts in the induction of neutralizing-antibody and T-cell responses, as well as protective immunity.
  • Clinical and Translational Updates
      
  • Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.

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Price(USD) : $380.00

Price(USD) : $2540.00

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