DeepFRET, a software for rapid and automated single-molecule FRET data classification using deep learning.

Journal: eLife
Published Date:

Abstract

Single-molecule Förster Resonance energy transfer (smFRET) is an adaptable method for studying the structure and dynamics of biomolecules. The development of high throughput methodologies and the growth of commercial instrumentation have outpaced the development of rapid, standardized, and automated methodologies to objectively analyze the wealth of produced data. Here we present DeepFRET, an automated, open-source standalone solution based on deep learning, where the only crucial human intervention in transiting from raw microscope images to histograms of biomolecule behavior, is a user-adjustable quality threshold. Integrating standard features of smFRET analysis, DeepFRET consequently outputs the common kinetic information metrics. Its classification accuracy on ground truth data reached >95% outperforming human operators and commonly used threshold, only requiring ~1% of the time. Its precise and rapid operation on real data demonstrates DeepFRET's capacity to objectively quantify biomolecular dynamics and the potential to contribute to benchmarking smFRET for dynamic structural biology.

Authors

  • Johannes Thomsen
    Department of Chemistry and Nanoscience Centre, University of Copenhagen, Copenhagen, Denmark.
  • Magnus Berg Sletfjerding
    Department of Chemistry and Nanoscience Centre, University of Copenhagen, Copenhagen, Denmark.
  • Simon Bo Jensen
    Department of Chemistry and Nanoscience Centre, University of Copenhagen, Copenhagen, Denmark.
  • Stefano Stella
    Structural Molecular Biology Group, Novo Nordisk Foundation Centre for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
  • Bijoya Paul
    Structural Molecular Biology Group, Novo Nordisk Foundation Centre for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
  • Mette Galsgaard Malle
    Department of Chemistry and Nanoscience Centre, University of Copenhagen, Copenhagen, Denmark.
  • Guillermo Montoya
    Structural Molecular Biology Group, Novo Nordisk Foundation Centre for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
  • Troels Christian Petersen
    Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark.
  • Nikos S Hatzakis
    Department of Chemistry and Nanoscience Centre, University of Copenhagen, Copenhagen, Denmark.