DNA origami is one of the most promising recent developments in DNA self-assembly. It allows for the construction of arbitrary nanoscale patterns and objects by folding a long viral scaffold strand using a large number of short "staple" strands. Assembly is usually accomplished by thermal annealing of the DNA molecules in buffer solution. We here demonstrate that both 2D and 3D origami structures can be assembled isothermally by annealing the DNA strands in denaturing buffer, followed by a controlled reduction of denaturant concentration. This opens up origami assembly for the integration of temperature-sensitive components.
Spezifisch fluorophormarkierte rechteckige DNA‐Origami werden als Nanometerlineal verwendet. So konnten mit superauflösenden Mikroskopieverfahren, die auf der sukzessiven Lokalisierung von Einzelmolekülen beruhen, zwei Fluorophore mit einem Abstand von ungefähr 90 nm aufgelöst werden. Die Kombination von Mikroskopie jenseits der Beugungsgrenze und DNA‐Nanotechnologie eröffnet neue Wege für die Erforschung von Nanostrukturen und deren Dynamik.
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