Active Recombinant COVID-19 Spike S2 protein(BA.2/Omicron), His-tagged

• Cat.No.: Spike-742V
• Product Overview: Recombinant COVID-19 Spike S2 protein(BA.2+L452M/Omicron)(Ser 686 - Pro 1213)(Accession # QHD43416.1(N764K, D796Y, Q954H, N969K, F817P, A892P, A899P, A942P, K986P, V987P)), fused with His tag at the C-terminus, was expressed in HEK293.

Specification

• Source: HEK293
• Species: COVID-19
• Tag: His
• Form: Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization.
• Bio-activity: Immobilized SARS-CoV-2 Spike S2 protein, His Tag (BA.2/Omicron) at 1 μg/mL (100 μL/well) can bind Anti-SARS-CoV-2 Spike S2 protein Antibody, Human IgG4) with a linear range of 0.1-2 ng/mL.Immobilized Anti-SARS-CoV-2 Spike S2 protein Antibody, Human IgG4 at 1 μg/mL (100 μL/well) can bind SARS-CoV-2 Spike S2 protein, His Tag (BA.2/Omicron) with a linear range of 1-16 ng/mL.
• Molecular Mass: This protein carries a polyhistidine tag at the C-terminus.The protein has a calculated MW of 60.0 kDa. The protein migrates as 70-90 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
• Protein Length: Ser 686 - Pro 1213
• Endotoxin: Less than 1.0 EU per μg by the LAL method.
• Purity: >95% as determined by SDS-PAGE.
• Storage: For long term, the product should be stored at lyophilized state at -20°C or lower.Please avoid repeated freeze-thaw cycles. This product is stable after 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.

Gene Information

• Gene Name: S surface glycoprotein [ Severe acute respiratory syndrome coronavirus 2 ]
• Official Symbol: Spike
• Synonyms: Spike; S1 protein; Spike glycoprotein Subunit1; S glycoprotein Subunit1; Spike protein S1; COVID-19 Omicron
• Gene ID: 43740568
• Protein Refseq: YP_009724390.1
• UniProt ID: P0DTC2