FIGURE 7.

Full geometry optimized structures of the five oligosaccharide. Each conformation of the isolated oligosaccharides is shown. A, ΔA-iB-iB; B, ΔE-D-A-D; C, ΔE-D-iA-D; D, ΔC-C-A-C; and E, ΔC-A-A-A. Different colored stick models for each sugar and ball and stick model for sulfate and carboxyl groups were used to make it easy understand the relative positions between sugar rings and sulfate and carboxyl groups. Red and yellow balls represent oxygen and sulfur atoms, respectively, of the sulfate and carboxyl groups. Oligosaccharides are displayed with the nonreducing on the left and the reducing end on the right.