Dual ACE2 epitope-based biomimetic receptors for selective sensing of SARS-CoV variants

Peptide immobilization was done via a copper-catalyzed cycloaddition reaction, by coupling the ethynyl group of the C-terminal propargylglycine residue to azide-modified SPR gold chips (Xantec AZD-50 L) (Fig. S1). These chips feature a 50 nm…