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SARS-COV-2 Spike S1 Protein 4665



  • Expression: HEK293
  • Functional: Yes (ELISA)
  • Amino Acid Range: Gln14-Arg683
SKU: 4665parent Categories: , Tags: , , ,
Weight1 lbs
Dimensions9 × 5 × 2 in


express system


product tag



> 95% as determined by Tris-Bis PAGE;> 95% as determined by HPLC


The spike protein (S) of coronavirus (CoV) attaches the virus to its cellular receptor, angiotensin-converting enzyme 2 (ACE2). A defined receptor-binding domain (RBD) on S mediates this interaction.The S protein plays key parts in the induction of neutralizing-antibody and T-cell responses, as well as protective immunity.

molecular weight

The protein has a predicted MW of 102.6 kDa. Due to glycosylation, the protein migrates to 130-140 kDa based on Tris-Bis PAGE result.

available size

100 µg, 500 µg


Less than 1EU per μg by the LAL method.

SARS-COV-2 Spike S1 Protein 4665

Size and concentration
100, 500µg and lyophilized
Storage Instructions
Valid for 12 months from date of receipt when stored at -80°C. Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.
Storage buffer
Shipped at ambient temperature.
> 95% as determined by Tris-Bis PAGE
No information
target relevance


SPR with SARS-COV-2 Spike S1 Protein
SARS-COV-2 Spike S1, hFc Tag captured on CM5 Chip via Protein A can bind Human ACE2, His Tag with an affinity constant of 3.80 nM as determined in SPR assay (Biacore T200).
ELISA with SARS-COV-2 Spike S1 Protein
Immobilized Human ACE2, His Tag at 5µg/ml (100µl/Well) on the plate. Dose response curve for SARS-COV-2 Spike S1, hFc Tag with the EC50 of 92.3ng/ml determined by ELISA (QC Test).
HPLC of SARS-COV-2 Spike S1 Protein
The purity of SARS-COV-2 Spike S1 is greater than 95% as determined by SEC-HPLC.
SDS-PAGE gel of SARS-COV-2 Spike S1 Protein
SARS-COV-2 Spike S1 on Tris-Bis PAGE under reduced condition. The purity is greater than 95%.


Published literature highly relevant to the biological target of this product and referencing this antibody or clone are retrieved from PubMed database provided by The United States National Library of Medicine at the National Institutes of Health.



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