SARS-CoV-2 Spike Trimer Protein, His Tag (BA.3/Omicron) (MALS verified)

分子别名（Synonym）

Spike,S protein,Spike glycoprotein,S glycoprotein

表达区间及表达系统（Source）

SARS-CoV-2 Spike Trimer, His Tag (BA.3/Omicron) (SPN-C522c) is expressed from human 293 cells (HEK293). The spike mutations are identified on the SARS-CoV-2 Omicron variant (Pango lineage: BA.3; GISAID clade: GRA; Nextstrain clade: 21M). 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.

蛋白结构（Molecular Characterization）

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

The protein has a calculated MW of 137.8 kDa. The protein migrates as 160-200 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

内毒素（Endotoxin）

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

纯度（Purity）

>95% as determined by SDS-PAGE.

>90% as determined by SEC-MALS.

制剂（Formulation）

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

Contact us for customized product form or formulation.

运输（Shipping）

This product is supplied and shipped with dry ice, please inquire the shipping cost.

存储（Storage）

Please avoid repeated freeze-thaw cycles.

This product is stable after storage at:

1. The product MUST be stored at -70°C or lower upon receipt;
2. -70°C for 3 months under sterile conditions.

质量管理控制体系（QMS）

1. 质量管理体系（ISO, GMP）
2. 质量优势
3. 质控流程