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SARS-CoV-2 (COVID-19) S1 protein NTD, His Tag

COADS MS
DS

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Cat. No. / Size
Price
Qty
S1D-C52H6-100ug
$330.00
S1D-C52H6-1mg (500ug X 2)
$2350.00
ETA of in-stock products:2 business days
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Product Details

  • Synonym

    S1 protein NTD, Spike protein S1 NTD, BetaCoV S1-NTD

  • Source

    SARS-CoV-2 S1 protein NTD, His Tag (S1D-C52H6) is expressed from human 293 cells (HEK293). It contains AA Ser 13 - Leu 303 (Accession # QHD43416.1).

    Predicted N-terminus: Ser 13

    Request for sequence

  • Molecular Characterization

    Spike NTD Structure

    Other Tags and Version Biotin & Other Labeled Version

    This protein carries a polyhistidine tag at the C-terminus.

    The protein has a calculated MW of 34.9 kDa. The protein migrates as 45-65 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

  • Endotoxin

    Less than 1.0 EU per μg by the LAL method / rFC method.

  • Purity

    >90% as determined by SDS-PAGE.

  • Formulation

    Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.

    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.

  • ACRO Quality Management System

    1. QMS(ISO, GMP)
    2. Quality Advantages
    3. Quality Control Process

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Performance Data

  • SDS-PAGE

    Spike NTD SDS-PAGE

    SARS-CoV-2 S1 protein NTD, His Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 90%.

  • Bioactivity-ELISA

    Spike NTD ELISA

    Immobilized SARS-CoV-2 S1 protein NTD, His Tag (Cat. No. S1D-C52H6) at 1 μg/mL (100 μL/well) can bind Anti-SARS-CoV-2 S1 protein Antibody, human IgG1 with a linear range of 0.1-3 ng/mL (QC tested).

    Protocol

  • Bioactivity-SPR

    Spike NTD SPR

    Anti-SARS-CoV-2 S1 protein Antibody captured on CM5 chip via Anti-human IgG Fc antibodies surface can bind SARS-CoV-2 S1 protein NTD, His Tag (Cat. No. S1D-C52H6) with an affinity constant of 74.6 nM as determined in a SPR assay (Biacore T200) (Routinely tested).

    Protocol

  • Bioactivity-BLI

    Spike NTD BLI

    Loaded Anti-SARS-CoV-2 Spike NTD Antibody, Chimeric mAb (Cat. No. SPD-M121) on AHC Biosensor, can bind SARS-CoV-2 S1 protein NTD, His Tag (Cat. No. S1D-C52H6) with an affinity constant of 39.8 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).

    Protocol

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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.

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