Active Recombinant COVID-19 Spike protein, Fc-tagged

• Cat.No.: Spike-1898V
• Product Overview: Recombinant COVID-19 Spike protein(QHD43416.1)(Val 16 - Arg 685), fused with Fc tag, was expressed in HEK293.

Specification

• Source: HEK293
• Species: COVID-19
• Tag: Fc
• Form: Tris, Glycine and NaCl, pH7.5
• Bio-activity: Immobilized Biotinylated Human ACE2, His,Avitag at 1 μg/mL (100 μL/well) on Streptavidin precoated (0.5 μg/well) plate,can bind SARS-CoV-2 S1 protein, Fc Tag with a linear range of 0.4-6 ng/mL
• Molecular Mass: 101.5 kDa
• Protein length: Val 16 - Arg 685
• Endotoxin: Less than 1.0 EU per μg by the LAL method.
• Purity: >95% as determined by SDS-PAGE.
• 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:
  -20°C to -70°C for 12 months in lyophilized state;
  -70°C for 3 months under sterile conditions after reconstitution.
• Reconstitution: It is recommended that sterile water be added to the vial to prepare a stock solution of 0.2 ug/ul. Centrifuge the vial at 4°C before opening to recover the entire contents.