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AI-Driven Microscopy Maps DNA Tangles With Nanometre Precision

A Sheffield-led team reports automated analysis that identifies over–under strand crossings in seconds.

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Overview

  • The end-to-end pipeline combines atomic force microscopy with advanced software and AI to visualize, trace, and measure complex DNA structures.
  • Researchers say the method determines which strand passes over or under at each crossing, enabling distinction between a knot and its mirror image.
  • Molecular simulations model DNA interactions with mica surfaces and generate large synthetic datasets to train future AI frameworks.
  • The authors report a major speed-up in image interpretation, reducing tasks that took hours to a process completed in seconds.
  • The peer-reviewed study appears in Nature Communications and stems from a six-institution collaboration across the UK, Slovakia, and France, with applications framed for studying DNA topology and protein interactions such as topoisomerases.