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Your Position: > Protein > Spike protein > SPN-C52H6

SARS-CoV-2 S protein (HV69-70del, Y144del, N501Y, A570D, D614G, P681H, T716I, S982A, D1118H), His Tag (MALS verified)

  • Synonym
    Spike,S protein,Spike glycoprotein,S glycoprotein
  • Source
    SARS-CoV-2 S protein, His Tag (SPN-C52H6) is the ectodomain of SARS-CoV-2 S protein that contains AA Val 16 - Pro 1213 (Accession # QHD43416.1). The HV69-70del, Y144del, N501Y, A570D, D614G, P681H, T716I, S982A, D1118H mutations, which have become increasingly common in SARS-CoV-2 viruses from around the world. The recombinant protein is expressed from human 293 cells (HEK293) with T4 fibritin trimerization motif and a polyhistidine tag at the C-terminus. Proline substitutions (F817P, A892P, A899P, A942P, K986P, V987P) and alanine substitutions (R683A and R685A) are introduced to stabilize the trimeric prefusion state of SARS-CoV-2 S protein and abolish the furin cleavage site, respectively. The HV69-70del / Y144del / N501Y / A570D / D614G / P681H / T716I / S982A / D1118H mutations were identified in the SARS-CoV-2 Alpha variant (Pango lineage: B.1.1.7; other names: 20I/501Y.V1 or VOC 202012/01).
    Predicted N-terminus: Val 16
  • Molecular Characterization

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

    The protein has a calculated MW of 137.8 kDa. The protein migrates as 150-180 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

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

    >90% as determined by SDS-PAGE.

    >90% as determined by SEC-MALS.

  • Formulation

    Lyophilized from 0.22 μm filtered solution in PBS 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.
SDS-PAGE
Spike protein SDS-PAGE

SARS-CoV-2 S protein, 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%.

SEC-MALS
Spike protein MALS images

The purity of SARS-CoV-2 S protein, His Tag (Cat. No. SPN-C52H6) is more than 90% and the molecular weight of this protein is around 520-600 kDa verified by SEC-MALS.

Bioactivity-ELISA
 Spike protein ELISA

Immobilized SARS-CoV-2 S protein, His Tag (Cat. No. SPN-C52H6) at 1 μg/mL (100 μL/well) can bind Human ACE2, Fc Tag (Cat. No. AC2-H5257) with a linear range of 0.1-3 ng/mL (QC tested).

 Spike protein ELISA

Immobilized Human ACE2, Fc Tag (Cat. No. AC2-H5257) at 1 μg/mL (100 μL/well) can bind SARS-CoV-2 S protein, His Tag (Cat. No. SPN-C52H6) with a linear range of 0.3-5 ng/mL (Routinely tested).

Bioactivity-SPR
 Spike protein SPR

Human ACE2, Fc Tag (Cat. No. AC2-H5257) captured on CM5 chip via Anti-human IgG Fc antibodies surface can bind SARS-CoV-2 S protein, His Tag (Cat. No. SPN-C52H6) with an affinity constant of 1.61 nM as determined in a SPR assay (Biacore 8K) (Routinely tested).

  • Background
    It's been reported that SARS-CoV-2 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
  • Purchaser Notification
    Important Licensing Information: This product may be covered by Limited Use Label License(s). By use of this product, you accept the terms and conditions of all applicable Limited Use Label License(s).
  • Limited Use Label License No. 18: Engineered Coronavirus Spike Proteins
    This product and its use is the subject of U.S. Provisional Patent Application No. 63/032,502 and sold under a license from The University of Texas at Austin. Rights to use this product are limited to research and clinical diagnostics, and expressly exclude the right to use in human therapeutics, vaccines, and any use involving the administration of this product to humans.

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