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Related Experiment Video

Updated: Dec 26, 2025

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Tracy: basecalling, alignment, assembly and deconvolution of sanger chromatogram trace files.

Tobias Rausch1,2,3, Markus Hsi-Yang Fritz4, Andreas Untergasser5,6

  • 1European Molecular Biology Laboratory (EMBL), Genomics Core Facility, Heidelberg, 69117, Germany. tobias.rausch@embl.de.

BMC Genomics
|March 16, 2020
PubMed
Summary

Tracy is a new, user-friendly tool for Sanger sequencing data analysis. It offers both command-line and web applications for basecalling, alignment, and variant confirmation in molecular biology research.

Keywords:
AlignmentChromatogramPCRSanger sequencingVariant calling

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Area of Science:

  • Molecular Biology
  • Bioinformatics
  • Genomics

Background:

  • DNA sequencing is fundamental to molecular biology research.
  • Existing Sanger sequencing analysis tools lack user-friendliness and versatility for web or batch processing.
  • There is a need for accessible, efficient tools for analyzing Sanger sequencing data.

Purpose of the Study:

  • To develop an efficient and versatile tool for Sanger sequencing data analysis.
  • To provide both command-line and web-based interfaces for broad accessibility.
  • To facilitate large-scale and interactive analysis of sequencing chromatograms.

Main Methods:

  • Developed Tracy, a command-line application for basecalling, alignment, assembly, and deconvolution of chromatogram files.
  • Created companion web applications with interactive graphical user interfaces for user-friendly access.
  • Integrated state-of-the-art file formats like JSON and BCF for reporting.

Main Results:

  • Tracy provides efficient and versatile analysis of Sanger sequencing data.
  • Companion web applications offer installation-free, intuitive chromatogram analysis.
  • The tool supports integration into large-scale pipelines and high-throughput settings.
  • Tracy reports sequencing results and variant calls using modern file formats.

Conclusions:

  • Tracy is suitable for large-scale validation in clinical genomics and high-throughput genome editing.
  • Molecular biologists can use the web applications for easy Sanger chromatogram analysis.
  • The tool accelerates variant confirmation in various molecular biology applications.