Description Recombinant SARS-CoV-2 Spike S2 ECD Protein is produced by the Baculovirus-Insect Cells expression system. The target protein is expressed with sequence (Ser686-Pro1213) of 2019-ncov Spike S2 ECD (Accession #YP_009724390.1) fused with a His-tag at the C-terminus.
Purity > 90% by SDS-PAGE.
Endotoxin < 1.0 EU/ug of the protein by LAL method.
Formulation Lyophilized from a 0.22 um filtered solution of sterile 20 mM PB, 300 mM NaCl, pH 7.0. or Supplied as a 0.22 um filtered solution in 20 mM PB, 300 mM NaCl, pH 7.0
Species Human
Calculated MW 58.8kDa
Expressed Host Baculovirus-Insect Cells
Tag His tag at the C-terminus
Gene ID 43740568 Storage Store the lyophilized protein at -20°C to -80°C for long term. After reconstitution, the protein solution is stable at -20°C for 3 months, at 2-8°C for up to 1 week. or This product is stable at ≤ -70°C for up to 6 months from the date of receipt. For optimal storage, aliquot into smaller quantities after centrifugation and store at the recommended temperature. Reconstitution For lyophilized protein: Reconstitute to a concentration of 0.1-0.5 mg/mL in sterile distilled water.
Alternative Names S2 protein; Spike glycoprotein Subunit2; S glycoprotein Subunit2; Spike protein S2; COVID-19; SARS-CoV-2; 2019-nCoV