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. Author manuscript; available in PMC: 2019 May 31.
Published in final edited form as: ACS Nano. 2017 Jan 31;11(2):1301–1306. doi: 10.1021/acsnano.6b05602

Figure 3. Design principles for controlling the supertwist of DNA tile tubes.

Figure 3

a) Tile tubes with an odd number of tubes close with a discrete offset resulting in a supertwisted shape of the structure. b) By shifting single tiles in the design, the offset can be reduced stepwise as illustrated for the case of a 3 nt (left) and 6 nt tile shift (right) in a supertwisted 13-helix tile tube (stw13HT). Here, the tile-shifting gradually reduces the overall amount of supertwist in the structure.