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Genome Annotation and Assembly03:36

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Updated: Dec 28, 2025

Hybrid De Novo Genome Assembly for the Generation of Complete Genomes of Urinary Bacteria using Short- and Long-read Sequencing Technologies
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BlobToolKit - Interactive Quality Assessment of Genome Assemblies.

Richard Challis1,2, Edward Richards3, Jeena Rajan3

  • 1Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3JT, UK rc28@sanger.ac.uk.

G3 (Bethesda, Md.)
|February 20, 2020
PubMed
Summary

Contaminant DNA can compromise genome assembly accuracy. BlobToolKit is a new software suite that helps researchers identify and remove non-target DNA, ensuring higher quality genome assemblies and reliable biological inferences.

Keywords:
Bioinformaticsgenome assemblyquality controlvisualisation web-tool

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Area of Science:

  • Genomics
  • Bioinformatics
  • Computational Biology

Background:

  • Genome assembly from sequence data can be inaccurate due to contaminant DNA introduced during sample processing or co-extraction.
  • Such contaminated assemblies can lead to flawed biological inferences and mislead downstream analyses in public databases.
  • Ensuring the biological credibility of genome assemblies is crucial for accurate scientific research.

Purpose of the Study:

  • To introduce BlobToolKit, a software suite designed to identify and isolate non-target DNA in genome assemblies.
  • To provide researchers with tools for filtering contaminant DNA during the assembly process.
  • To enhance the quality and reliability of publicly available genome assemblies.

Main Methods:

  • BlobToolKit processes assembly, read, and analysis files for interactive, browser-based exploration.
  • The software enables reproducible analysis and visualization of genome assembly data.
  • An automated BlobToolKit pipeline is applied to publicly available eukaryotic genome assemblies.

Main Results:

  • BlobToolKit facilitates the identification and isolation of non-target DNA in draft and public genome assemblies.
  • The tool aids in producing genome assemblies with high biological credibility by filtering out contaminant DNA.
  • Results from an automated pipeline on eukaryotic assemblies are available via a public viewer, with plans for comprehensive coverage and updates.

Conclusions:

  • BlobToolKit is an effective tool for improving the quality of genome assemblies by addressing DNA contamination.
  • The software enhances the reliability of sequence-based biological inference.
  • Integration with public genome archives like the European Nucleotide Archive provides valuable quality indicators for genome assemblies.