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Updated: Jul 7, 2026
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Hybrid De Novo Genome Assembly for the Generation of Complete Genomes of Urinary Bacteria using Short- and Long-read Sequencing Technologies
Published on: August 20, 2021
From contiguity to accuracy: Validation-centered perspectives on bacterial genome assembly.
Minkyung Kim1, Yong-Joon Cho2,3, Ok-Sun Kim1
1Division of Life Sciences, Korea Polar Research Institute, Incheon 21990, Republic of Korea.
Journal of Microbiology (Seoul, Korea)
|July 6, 2026
Summary
Bacterial genome assembly is improving, but errors persist despite increased contiguity. Focus must shift from completeness to accuracy and validation for reliable genomic data.
Area of Science:
- Genomics
- Bioinformatics
- Microbiology
Background:
- Long-read sequencing technologies have enhanced bacterial genome assembly contiguity.
- Achieving contiguous assemblies does not guarantee accuracy, with errors like misassemblies and nucleotide inaccuracies remaining common.
Purpose of the Study:
- To provide a validation-centered overview of bacterial genome assembly.
- To address the challenge of ensuring accuracy and reliability in near-complete bacterial genomes.
- To propose a framework for decision-making in genome assembly and interpretation.
Main Methods:
- Review of current bacterial genome assembly challenges and error sources.
- Examination of repetitive structures, sequencing error profiles, and algorithmic limitations.
- Development of a decision-making framework linking sequencing, assembly, polishing, and validation.
Main Results:
- Assembly errors, including structural misassemblies and incorrect circularization, are prevalent.
- The primary challenge is verifying the correctness of complete bacterial genomes, not just contiguity.
- A tiered confidence classification system is introduced to guide interpretation of assembly reliability.
Conclusions:
- Contemporary bacterial genomics requires prioritizing accuracy, reproducibility, and validation over mere completeness.
- A practical framework is proposed to guide sequencing strategy, workflow, polishing, and validation rigor.
- Future large-scale bacterial genome sequencing efforts must emphasize evidence-supported validation for reliable biological insights.
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