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ACROBiosystems SARS-CoV-2 Spike RBD Protein, His Tag (XBB.1.5/Omicron), 1 mg (2 x 500 μg)
Supplier: ACROBiosystems SPDC52421MG
SARS-CoV-2 Spike RBD Protein (XBB.1.5/Omicron) is a lyophilized recombinant receptor-binding domain fragment expressed in human HEK293 cells and supplied as a 1 mg pack (2 x 500 μg). The polyhistidine-tagged protein is MALS-verified, low endotoxin, and intended for use as an ELISA antigen, assay standard, or control in binding and serological assays.
- Expressed in human HEK293 cells
- Polyhistidine tag at the C-terminus for purification
- High purity: >95% by SDS-PAGE; >90% by SEC-MALS
- Calculated molecular weight 26.6 kDa; migrates 35-42 kDa on SDS-PAGE due to glycosylation
- Lyophilized from PBS, pH 7.4, with trehalose
- Low endotoxin: <1.0 EU per μg
- MALS verified for molecular mass confirmation
- Supplied as two 500 μg vials (total 1 mg)
- Stable lyophilized at -20°C to -70°C for up to 12 months; stable for 3 months at -70°C after reconstitution
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