Figure 4
From: PolySac3DB: an annotated data base of 3 dimensional structures of polysaccharides
Different levels of structural organization in starch. (A) Representation of the left-handed single chains that are parallel stranded in A-starch double helix. (B) and (C) Representations of the double helix of crystalline starch after modeling the branching point between the strands. (D) Computer representation of an ideal platelet nanocrystal showing (i) width of the platelet with the tilt angle of the double helical component, (ii) composition of the platelet and (iii) the enlarged view of the constituent repeating unit.