SARS-CoV-2 has a "third binding mode" in addition to the known binding modes, making it a powerful coronavirus that stands out compared to other species

https://www.thailandmedical.news/news/breaking-preprint-research-shows-that-sars-cov-2-has-third-binding-mode,-making-it-a-truly-potent-coronavirus-that-is-in-a-league-of-its-own