Active Recombinant COVID-19 Spike protein S2, His-tagged

• Cat.No.: Spike-238V
• Product Overview: Recombinant COVID-19 Spike protein (Ser686-Pro1213)(F817P, A892P, A899P, A942P, K986P, V987P) was fused to his-tag at the C-terminus and expressed in human 293 cells (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, His Tag at 1 μg/mL (100 μL/well) can bind SARS-CoV-2 Spike S2 Antibody, Human IgG1 with a linear range of 0.4-3 ng/mL.
• Molecular Mass: The protein has a calculated MW of 60.0 kDa. The protein migrates as 65-115 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: >90% as determined by SDS-PAGE.
• Storage: For long term storage, the product should be stored at lyophilized state at -20 centigrade or lower.
  Please avoid repeated freeze-thaw cycles.
  This product is stable after storage at:
  -20 centigrade to -70 centigrade for 12 months in lyophilized state;
  -70 centigrade 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℃ 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
• Gene ID: 43740568
• Protein Refseq: YP_009724390.1
• UniProt ID: P0DTC2