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Updated: Dec 15, 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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Optical map guided genome assembly.

Miika Leinonen1, Leena Salmela2

  • 1Department of Computer Science, Helsinki Institute for Information Technology, University of Helsinki, Pietari Kalmin katu 5, Helsinki, Finland.

BMC Bioinformatics
|July 8, 2020
PubMed
Summary
This summary is machine-generated.

OPTICALKERMIT directly integrates genome-wide optical maps into contig assembly, improving genome assemblies. This method enhances contiguity and reduces misassemblies in eukaryotic genomes.

Keywords:
Genome assemblyOptical mapping

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Area of Science:

  • Genomics
  • Bioinformatics

Background:

  • Third-generation sequencing advances genome assembly but cannot produce complete genome-wide assemblies from reads alone.
  • Optical mapping data has been used to improve genome assemblies, typically as a post-assembly processing step.

Purpose of the Study:

  • To introduce OPTICALKERMIT, a novel method for directly integrating genome-wide optical maps into the contig assembly process.
  • To adapt the Kermit method for incorporating optical map information into the miniasm assembler.

Main Methods:

  • OPTICALKERMIT localizes sequencing reads to the genome using genome-wide optical maps.
  • The Kermit method was modified to utilize this optical map data for improved contig assembly.

Main Results:

  • Integrating optical maps into miniasm assembly increased NGA50 and decreased or maintained misassembly counts.
  • OPTICALKERMIT achieved nearly threefold higher NGA50 with fewer misassemblies compared to Canu on Arabidopsis thaliana reads.

Conclusions:

  • OPTICALKERMIT effectively integrates optical mapping data directly into eukaryotic genome contig assembly.
  • This approach shows significant promise for enhancing the contiguity of genome assemblies.