Figure 3.

Structure of the mucin glycopeptide 1^∥. (a) Superimposed view of the 20 final structures. The superposition was performed on the backbone atoms of the peptides and the ring atoms of the displayed sugars. The relatively unrestrained and unstructured distally linked glycans are omitted for clarity. The amino and acid termini are labeled N and C, respectively. The α-O-GalNAc residues are labeled S1G1, T2G1, and T3G1 for the STT segment. Carbon, nitrogen, and oxygen atoms are colored green, blue, and red, respectively, on the pentapeptide. (b) View of the structure that has lowest rms deviation to the average of the 20 structures shown in a. (c) STF cluster 1.