SARS-CoV-2(55) COVID-19(22) variant(16) binding(15) Protein(14) SARS-CoV-2.(14) Ligand(13) the SARS-CoV-2(13) NMR spectroscopy(13) protease(13) approach(13) NMR(12) Aptamers(12) reported(11) Infection(11) inhibitors(11) Interaction(11) Vaccine(11) expressed(11) detection(11) mechanism(10) coronavirus(10) Vaccines(10) spike glycoprotein(10) SARS-CoV-2 variant(10) aptamer(10) SARS‐CoV‐2(9) variants of concern(9) Screening(9) FIVE(9)