● -20°C to -70°C for 12 months in lyophilized state; ● -70°C for 3 months under sterile conditions after reconstitution.For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Biotinylated SARS-CoV-2 Spike RBD Protein (K417N, L452R, T478K), His,Avitag (SPD-C82Eg) is expressed from human 293 cells (HEK293). It contains AA Arg 319 - Lys 537 (Accession # QHD43416.1 (K417N, L452R, T478K)). The mutations K417N, L452R, T478K were identified in the SARS-CoV-2 Delta sub-lineages (Pango lineage: AY.1/AY.2/AY.3; also known as "Delta Plus").