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ACROBiosystems SARS-CoV-2 Spike RBD Protein (XBB/Omicron), C-terminal His tag, HEK293, lyophilized, 1 mg

Supplier:  ACROBiosystems SPDC52411MG

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Recombinant SARS-CoV-2 spike receptor-binding domain (RBD) representing the XBB/Omicron lineage, expressed in human HEK293 cells with a C-terminal polyhistidine tag. MALS-verified and supplied lyophilized for use in ELISA and antibody/ACE2 binding assays.

  • Expression system: HEK293 (human 293) cells.
  • Sequence: Arg 319-Lys 537 (RBD).
  • Variant: XBB/Omicron mutations present.
  • Tag: C-terminal polyhistidine (His) tag.
  • Molecular weight: ~30-40 kDa (SEC-MALS verified).
  • Purity: >95% by SDS-PAGE; >90% by SEC-MALS.
  • Formulation: lyophilized from 0.22 μm filtered PBS, pH 7.4, with trehalose.
  • Storage: long-term lyophilized at -20°C or below; reconstituted storage at -70°C (sterile) for short term.
  • Applications: bioactivity ELISA and antibody/ACE2 binding assays.

Catalog No. NC2219091


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