Beads;2MG;The Antigen pre-coupled magnetic beads are coupled with biotinylated protein onto streptavidin (SA) magnetic beads. Because Streptavidin (SA) has an extraordinarily high affinity for biotin with a dissociation constant (Kd) on the order of 10-14 mol/L, the biotinylated protein can bind to the SA beads irreversibly. We provide the SARS-CoV-2 Spike trimer (D614G) protein-coupled magnetic beads, which could help you to capture the antibody or ACE-2 protein, and easily to follow up with other tests, such as immunocapture, biopanning and flow cytometry.;Immobilized 26.7 μg Spike Trimer (D614G) protein to 1 mg Beads, can bind the Anti-SARS-CoV-2 RBD Potent Neutralizing Antibody, Chimeric mAb, Human IgG1 (Cat. No. SPD-M128) with an EC50 of 0.5424 μg/mL (QC tested).