Fig. 1: StarPEG-(KA7)4 bundles DNA nanotubes.
From: Triggered contraction of self-assembled micron-scale DNA nanotube rings
a Schematic illustration of DNA nanotubes formed from double-crossover DNA tiles11. b Schematic illustration of tetravalent starPEG-(xA7)4 composed of four branches of 7 lysine- or aspartate-alanine repeats. c Schematic illustration of DNA nanotubes in the absence and presence of different synthetic peptide constructs. d Confocal images of DNA nanotubes (30 nM DNA tiles, labeled with Atto633, λex = 640 nm) without any peptide; with 2 μM positively charged monovalent KA7-peptide; with 500 nM negatively charged tetravalent starPEG-(DA7)4 composed of four branches of 7 aspartate-alanine repeats and with 500 nM positively charged tetravalent starPEG-(KA7)4 composed of four branches of 7 lysine-alanine repeats (from left to right). Scale bar: 10 μm.
