SARS-CoV-2(29) the SARS-CoV-2(20) coronavirus(17) binding(16) spike(14) SARS-CoV(13) Spike protein(12) Neutralizing(12) the spike protein(12) ACE2(11) SARS-CoV-2 variant(11) Receptor-binding domain(11) COVID-19(11) crystal structure(9) antibody(9) immunized(9) SARS-CoV-2 spike protein(9) SARS-CoV-2 variants(9) conserved(9) Infection(9) overlap(8) virus(8) contribute(8) complex(8) variants of SARS-CoV-2(8) Structure(8) inhibit(8) X-ray crystallography(8) domain(8) ACE2 receptor(8)