title: Fluorescence microscopy with 6 nm resolution on DNA origami.
abstract: Resolution of emerging superresolution microscopy is commonly characterized by the width of a point-spread-function or by the localization accuracy of single molecules. In contrast, resolution is defined as the ability to separate two objects. Recently, DNA origamis have been proven as valuable scaffold for self-assembled nanorulers in superresolution microscopy. Here, we use DNA origami nanorulers to overcome the discrepancy of localizing single objects and separating two objects by resolving two docking sites at distances of 18, 12, and 6 nm by using the superresolution technique DNA PAINT(point accumulation for imaging in nanoscale topography). For the smallest distances, we reveal the influence of localization noise on the yield of resolvable structures that we rationalize by Monte Carlo simulations.
authors.affiliation: Institute for Physical and Theoretical Chemistry and Braunschweig Integrated Centre of Systems Biology (BRICS), Braunschweig University of Technology, Hans-Sommer Str. 10, 38106 Braunschweig (Germany).
authors.forename: Mario
authors.initials: M
authors.lastname: Raab
authors.forename: Jürgen J
authors.initials: JJ
authors.lastname: Schmied
authors.forename: Ija
authors.initials: I
authors.lastname: Jusuk
authors.forename: Carsten
authors.initials: C
authors.lastname: Forthmann
authors.forename: Philip
authors.initials: P
authors.lastname: Tinnefeld
mesh_terms: D004247:DNA / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry; D008856:Microscopy, Fluorescence / Q000379:methods*; D009010:Monte Carlo Method; D036103:Nanotechnology / Q000379:methods*
chemical_list: D005456:Fluorescent Dyes; D004247:DNA
keywords: DNA PAINT; DNA origami; fluorescence; resolution; superresolution microscopy