Stability of the MuV HN protein-receptor complex. (A) The energetic stability of the HN protein–receptor interaction calculated with the MD simulations. di, disaccharide; tri, trisaccharide. (B) ITC analysis of the binding of glycans to the MuV-HN protein. (Upper) Raw titration data. (Lower) Integration plot of the titration data. (Left) MuV-HN protein–NeuAcα2,3Gal (disaccharide). (Right) MuV-HN protein–NeuAcα2,3Galβ1,4Glc (trisaccharide).