Fig. 5.

Additional measurements of the xanthan molecule containing the partially unravelled section. Line profiles (right panels) depict the heights and distances of the features beneath the red lines in the AFM images (left panels). (a) Profile of the gap created by the unravelled section, with blue markers (in both panels) labelling the transition zones. (b) Profile across the helical section. (c) Profile across the unravelled section. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.).