SARS-CoV-2 Spike RBD Protein, His Tag (BQ.1.1/Omicron) (MALS verified)
SARS-CoV-2 Spike RBD, His Tag (BQ.1.1/Omicron) (SPD-C5240) is expressed from human 293 cells (HEK293) . It contains AA Arg 319 - Lys 537 (Accession # QHD43416.1 (G339D, R346T, S371F, S373P, S375F, T376A, D405N, R408S, K417N, N440K, K444T, L452R, N460K, S477N, T478K, E484A, F486V, Q498R, N501Y, Y505H) ) . The spike mutations are identified on the SARS-CoV-2 Omicron variant (Pango lineage: BQ.1.1) .
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 26.6 kDa. The protein migrates as 33-37 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
Accession Number
QHD43416.1 (G339D, R346T, S371F, S373P, S375F, T376A, D405N, R408S, K417N, N440K, K444T, L452R, N460K, S477N, T478K, E484A, F486V, Q498R, N501Y, Y505H)
Expression Region
Arg 319 - Lys 537
Host
HEK293
Target
Spike RBD
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 Human ACE2, Fc Tag (Cat. No. AC2-H5257) at 5 μg/mL (100 μL/well) can bind SARS-CoV-2 Spike RBD, His Tag (BQ.1.1/Omicron) (Cat. No. SPD-C5240) with a linear range of 0.5-16 ng/mL (QC tested).
Format
Powder
Buffer
PBS, pH7.4
Additives
Trehalose
Molecular Weight
26.6 kDa
Shipping Conditions
RT
Storage Conditions
-20°C
Package Size
100ug*1
Product Datasheet
Https://www.acrobiosystems.com/static/main/products/pdf/ds/SPD-C5240.pdf
Species
SARS-CoV-2
Curated Selection
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