Recombinant Protein;200UG;Biotinylated SARS-CoV-2 Spike RBD (L452R), His,Avitag (SPD-C82E3) is expressed from human 293 cells (HEK293). It contains AA Arg 319 - Lys 537 (Accession # QHD43416.1 (L452R)). The L452R mutation was identified in the SARS-CoV-2 variant (known as B.1.427/B.1.429) which emerged in California, the U.S..;This protein carries a polyhistidine tag at the C-terminus, followed by an Avi tag. The protein has a calculated MW of 28.3 kDa. The protein migrates as 30-40 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.;Immobilized Human ACE2, Fc Tag (Cat. No. AC2-H5257) at 1 μg/mL (100 μL/well) can bind Biotinylated SARS-CoV-2 Spike RBD, His,Avitag (Cat. No. SPD-C82E3) with a linear range of 2-63 ng/mL (QC tested).;Immobilized Biotinylated SARS-CoV-2 Spike RBD, His,Avitag (Cat. No. SPD-C82E3) at 1 μg/mL (100 μL/well) on streptavidin precoated (0.5 μg/well) plate can bind Human ACE2, Fc Tag (Cat. No. AC2-H5257) with a linear range of 0.2-2 ng/mL (Routinely t