SARS-CoV-2(31) omicron(19) molecular dynamics(18) mechanism(15) variant(15) binding(15) Mutation(12) ACE2(11) antibody(11) inhibitor(11) angiotensin(11) inhibition(11) inhibitors(11) Delta(10) Analysis(10) Omicron variant(10) monoclonal antibodies(10) Interaction(9) approach(9) Molecular dynamics simulation(9) molecular(9) active site(9) reported(9) Protein(9) Vaccine(9) reduced(9) COVID-19 pandemic(8) significantly(8) Contact(8) the receptor-binding domain(8)