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SARS-CoV-2 Spike Trimer Protein, His Tag (BA.1/Omicron) (MALS verified)

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SPN-C522a-200ug
$1,485.00
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SPN-C522a-1mg
$5,080.00
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SPN-C522a-10mg
$36,915.00
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SPN-C522a-100mg
$295,320.00
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SPN-C522a
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Synonyms

Spike, S protein, Spike glycoprotein, S glycoprotein

Source

SARS-CoV-2 Spike Trimer, His Tag (BA.1/Omicron) (SPN-C522a) is expressed from human 293 cells (HEK293). The spike mutations are identified on the SARS-CoV-2 Omicron variant (Pango lineage: BA.1; GISAID clade: GRA). The recombinant protein is expressed from human 293 cells (HEK293) with T4 fibritin trimerization motif and a polyhistidine tag at the C-terminus. Proline substitutions (F817P, A892P, A899P, A942P, K986P, V987P) and alanine substitutions (R683A and R685A) are introduced to stabilize the trimeric prefusion state of SARS-CoV-2 S protein and abolish the furin cleavage site, respectively.

Molecular Characterization

This protein carries a polyhistidine tag at the C-terminus.

The protein has a calculated MW of 138.2 kDa. The protein migrates as 160-190 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

Endotoxin

Less than 1.0 EU per μg by the LAL method / rFC method.

Purity

>95% as determined by SDS-PAGE.

Formulation

Supplied as 0.2 μm filtered solution in 0.1 M Sodium citrate, pH5.5.

Contact us for customized product form or formulation.

Shipping and Storage

This product is supplied and shipped on dry ice.

Please avoid repeated freeze-thaw cycles.

This product is stable after storage at:
  • The product MUST be stored at -70°C or lower upon receipt;
  • -70°C for 3 months under sterile conditions.
ACRO Quality Management System

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.