Synonym
S1 protein; Spike protein S1; Spike,S1 protein; S glycoprotein Subunit1
Source / expression
Recombinant SARS-COV-2 Spike S1 (N501Y,K417N,E484K) Protein is expressed from HEK293 with His tag at the C-Terminus.It contains Val16-Arg685(N501Y,K417N,E484K) [Accession | YP_009724390.1].
Molecular weight
The protein has a predicted MW of 75.9 kDa. Due to glycosylation, the protein migrates to 90-130 kDa based on Bis-Tris PAGE result.
Endotoxin
Less than 1 EU per μg by the LAL method.
Purity
> 95% as determined by Bis-Tris PAGE
> 95% as determined by HPLC
Formulation
Supplied as 0.22μm filtered solution in PBS (pH 7.4).
Storage
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.
