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Interactions of glycosylated ACE2 and S-protein were revealed using molecular dynamics simulations. (A) The number of intramolecular hydrogen bonds was drastically higher for each fully-sialylated N-glycan compared to the desialylated glycoform. (B) For Asn 90 and Asn 322, the sialic acid residue in the glycoform accounted for ∼10% of hydrogen bonds.
