Description：Recombinant COVID-19 S protein RBD Proteinis produced by the mammalian expression system and the target gene encoding Arg319-Phe541 (G339D, R346T, S371F, S373P, S375F, T376A, D405N, R408S, K417N, N440K, L452R, S477N, T478K, E484A, F486V, Q498R, N501Y, Y505H) is expressed with a 6His tag at the C-terminus. The mutations were identified in the COVID-19 variant (known as BF.7 lineage) which emerged in Europe.Form：Liquid in a 0.2 μm filtered solution of PBS, pH 7.4.Alternative Names：SARS-CoV-2 RBD Protein; SARS-CoV-2 Spike RBD Protein; SARS-CoV-2 S Protein RBD Entrez Gene (Human)： 43740568; SwissProt (Human)： P0DTC2; Purity：Greater than 95% as determined by reducing SDS-PAGE.Directions for Use：Please minimize freeze-thaw cycles.Storage/Stability：Store it at -20°C to -80°C for one year. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.

• 
  Greater than 95% as determined by reducing SDS-PAGE.