SARS-CoV-2 Spike NTD Protein, His Tag (B.1.1.529/Omicron) (MALS verified)
SARS-CoV-2 Spike NTD, His Tag (B.1.1.529/Omicron) (SPD-C522d) is expressed from human 293 cells (HEK293) . It contains AA Ser 13 - Leu 303 (Accession # QHD43416.1 (A67V, HV69-70del, T95I, G142D, VYY143-145del, N211del, L212I, ins214EPE) ) . 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) .
Product Specifications
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.
Specifications
This protein carries a polyhistidine tag at the C-terminus. The protein has a calculated MW of 34.6 kDa. The protein migrates as 50-65 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
Accession Number
QHD43416.1 (A67V, HV69-70del, T95I, G142D, VYY143-145del, N211del, L212I, ins214EPE)
Expression Region
Ser 13 - Leu 303
Host
HEK293
Target
Spike NTD
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 NTD, His Tag (B.1.1.529/Omicron) (Cat. No. SPD-C522d) at 1 μg/mL (100 μL/well) can bind Anti-SARS-CoV-2 Spike NTD Antibody, Chimeric mAb (Cat. No. SPD-M121) with a linear range of 0.1-3 ng/mL (QC tested).
Format
Powder
Buffer
PBS, pH7.4
Additives
Trehalose
Molecular Weight
34.6 kDa
Shipping Conditions
RT
Storage Conditions
-20°C
Package Size
1mg*1
Product Datasheet
Https://www.acrobiosystems.com/static/main/products/pdf/ds/SPD-C522d.pdf
Species
SARS-CoV-2
Curated Selection
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