SARS-CoV-2 Spike S1 Protein, His Tag (B.1.1.529/Omicron)

• Background:

  It's been reported that Coronavirus can infect the human respiratory epithelial cells through interaction with the human ACE2 receptor. The spike protein is a large type I transmembrane protein containing two subunits, S1 and S2. S1 mainly contains a receptor binding domain (RBD), which is responsible for recognizing the cell surface receptor. S2 contains basic elements needed for the membrane fusion.The S protein plays key parts in the induction of neutralizing-antibody and T-cell responses, as well as protective immunity.

• Description:

  SARS-CoV-2 Spike S1, His Tag (B.1.1.529/Omicron) (S1N-C52Ha) is expressed from human 293 cells (HEK293) . It contains AA Val 16 - Arg 685 (Accession # QHD43416.1 (A67V, HV69-70del, T95I, G142D, VYY143-145del, N211del, L212I, ins214EPE, G339D, S371L, S373P, S375F, K417N, N440K, G446S, S477N, T478K, E484A, Q493R, G496S, Q498R, N501Y, Y505H, T547K, D614G, H655Y, N679K, P681H) ) . The spike mutations are identified on the SARS-CoV-2 Omicron variant (Pango lineage: B.1.1.529; GISAID clade: GR/484A; Nextstrain clade: 21K) .

• Specifications:

  This protein carries a polyhistidine tag at the C-terminus. The protein has a calculated MW of 76.9 kDa. The protein migrates as 110-130 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

• Accession Number:

  QHD43416.1 (A67V, HV69-70del, T95I, G142D, VYY143-145del, N211del, L212I, ins214EPE, G339D, S371L, S373P, S375F, K417N, N440K, G446S, S477N, T478K, E484A, Q493R, G496S, Q498R, N501Y, Y505H, T547K, D614G, H655Y, N679K, P681H)

• Expression Region:

  Val 16 - Arg 685

• Host:

  HEK293

• Target:

  Spike S1

• Conjugation:

  Unconjugated

• Tag:

  C-10xHis

• Source:

  SARS-CoV-2

• Stability:

  ● -20°C to -70°C for 12 months in lyophilized state; ● -70°C for 3 months under sterile conditions after reconstitution. For long term storage, the product should be stored at lyophilized state at -20°C or lower.

• Endotoxin:

  1.0 EU per μg

• Purity:

  95%

• Bioactivity:

  Immobilized SARS-CoV-2 Spike S1, His Tag (B.1.1.529/Omicron) (Cat. No. S1N-C52Ha) at 2 μg/mL (100 μL/well) can bind Anti-SARS-CoV-2 Spike RBD Antibody, Chimeric mAb, Human IgG1 (Cat. No. S1N-M130) with a linear range of 0.4-25 ng/mL (QC tested).

• Format:

  Powder

• Buffer:

  PBS, pH7.4

• Additives:

  Trehalose

• Molecular Weight:

  76.9 kDa

• Shipping Conditions:

  RT

• Storage Conditions:

  -20°C

• Package Size:

  100ug*1

• Species:

  SARS-CoV-2