Name Spike RBD protein (SARS-CoV-2 Delta plus variant, B.1.617.2.1 or AY.1) Description C-terminal His-tagged recombinant spike RBD (K417N, L452R, T478K) protein (aa 319-541) (SARS-CoV-2 delta plus variant) Source Glycosylated recombinant viral protein expressed and purified from HEK293 cells Application Western blot standard, antibody ELISA, immunogen, etc. Purity > 95% (SDS-PAGE) Endotoxin <0.01 EU per µg of purified protein by LAL test Size 50 µg |