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Your Position: Casa > Protein > Spike NTD > SPD-CF2H3

FITC-Labeled SARS-CoV-2 Spike NTD Protein, His Tag

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  • Synonym
    S1 protein NTD,Spike protein S1 NTD,BetaCoV S1-NTD
  • Source
    FITC-Labeled SARS-CoV-2 Spike NTD, His Tag(SPD-CF2H3) is expressed from human 293 cells (HEK293). It contains AA Ser 13 - Leu 303 (Accession # QHD43416.1).
    Predicted N-terminus: Ser 13
  • Molecular Characterization
    Spike NTD Structure

    This protein carries a polyhistidine tag at the C-terminus

    The protein has a calculated MW of 34.9 kDa. The protein migrates as 53-63 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

  • Conjugate

    FITC

    Excitation source: 488 nm spectral line, argon-ion laser

    Excitation Wavelength: 488 nm

    Emission Wavelength: 535 nm

  • Labeling
    The primary amines in the side chains of lysine residues and the N-terminus of the protein are conjugated with FITC using standard chemical labeling method. The residual FITC is removed by molecular sieve treatment during purification process.
  • Protein Ratio
    The FITC to protein molar ratio is 2-4.
  • Endotoxin
    Less than 1.0 EU per μg by the LAL 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 protect from light and 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
Spike NTD SDS-PAGE

FITC-Labeled SARS-CoV-2 Spike 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 Anti-SARS-CoV-2 Spike NTD Antibody, Chimeric mAb, Human IgG1 (Cat. No. SPD-M121) at 1 μg/mL (100 μL/well) can bind FITC-Labeled SARS-CoV-2 Spike NTD, His Tag (Cat. No. SPD-CF2H3) with a linear range of 0.039-2.5 μg/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

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Price(EUR) : €350.00

Price(EUR) : €1390.00

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