The SARS-CoV-2 spike N-terminal domain engages 9- O -acetylated α2-8-linked sialic acids.
Ilhan TomrisLuca UnioneLinh NguyenPouya ZareeKim M BouwmanLin LiuZeshi LiJelle A FokMaría Ríos CarrascoRoosmarijn van der WoudeAnne L M KimpelMirte W LinthorstEnrico C J M VerpalenTom G CanielsRogier W SandersBalthasar A HeestersRoland J PietersJesús Jiménez-BarberoJohn S KlassenGeert-Jan BoonsRobert P de VriesPublished in: bioRxiv : the preprint server for biology (2022)
-acetylated sialic acid using its NTD. This binding functionality was selected against rapidly, most likely due to poor dissemination. Ablation of sialic acid binding in more recent SARS-CoV-2 Variants of Concern suggests a fine balance of sialic acid interaction of SARS-CoV-2 is required for infection and/or transmission.