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SARS-CoV-2 Spike S2 protein, His Tag (BA.2/Omicron)

SARS-CoV-2 Spike S2 protein, His Tag (BA.2/Omicron) (S2N-C52Hh) is expressed from human 293 cells (HEK293) . It contains AA Ser 686 - Pro 1213 (Accession # QHD43416.1 (N764K, D796Y, Q954H, N969K, F817P, A892P, A899P, A942P, K986P, V987P) ) . The spike mutations are identified on the SARS-CoV-2 Omicron variant (Pango lineage: BA.2/3/4/5) . Proline substitutions (F817P, A892P, A899P, A942P, K986P, V987P) are introduced to prevent the formation of aggregates in the course of protein production.

Product Specifications

Background

It's been reported that SARS-CoV-2 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 60.0 kDa. The protein migrates as 70-90 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

Accession Number

QHD43416.1 (N764K, D796Y, Q954H, N969K, F817P, A892P, A899P, A942P, K986P, V987P)

Expression Region

Ser 686 - Pro 1213

Host

HEK293

Target

Spike S2

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 S2 protein, His Tag (BA.2/Omicron) (Cat. No. S2N-C52Hh) at 1 μg/mL (100 μL/well) can bind Anti-SARS-CoV-2 Spike S2 protein Antibody, Human IgG4 (Cat. No. S2N-S86) with a linear range of 0.1-2 ng/mL (QC tested).

Format

Powder

Buffer

PBS, pH7.4

Additives

Trehalose

Molecular Weight

60.0 kDa

Shipping Conditions

RT

Storage Conditions

-20°C

Package Size

100ug*1

Product Datasheet

Https://www.acrobiosystems.com/static/main/products/pdf/ds/S2N-C52Hh.pdf

Species

SARS-CoV-2

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