Recombinant SARS-COV-2 Spike S1 NTD protein, His-Flag-tagged, Low Endotoxin

• Cat.No.: Spike-5748V
• Product Overview: Recombinant SARS-COV-2 Spike S1 NTD protein(QHD43416.1)(16-305 aa), fused with C-terminal His and Flag tag, was expressed in HEK293.

Specification

• Species: SARS-COV-2
• Source: HEK293
• Tag: Flag&His
• Protein Length: 16-305 aa
• Form: Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.
• Molecular Mass: The protein has a predicted MW of 35 kDa. Due to glycosylation, the protein migrates to 55-70 kDa based on Bis-Tris PAGE result.
• Endotoxin: Less than 0.01 EU per μg by the LAL method.
• Purity: > 95% as determined by Bis-Tris PAGE; > 95% as determined by HPLC
• Storage: -20 to -80°C for 12 months as supplied from date of receipt. -80°C for 3 months after reconstitution. Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.
• Reconstitution: Dissolve the lyophilized protein in distilled water.