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Related Experiment Video

Updated: May 7, 2026

An Ultrahigh-throughput Microfluidic Platform for Single-cell Genome Sequencing

An Ultrahigh-throughput Microfluidic Platform for Single-cell Genome Sequencing

Published on: May 23, 2018

Reducing assembly complexity of microbial genomes with single-molecule sequencing.

Sergey Koren, Gregory P Harhay, Timothy P L Smith

|September 17, 2013

Summary

This summary is machine-generated.

Third-generation sequencing significantly improves microbial genome assembly by using long reads to create complete, high-quality genomes. This advancement reduces costs and enhances the accuracy of bacterial and archaeal genome databases.

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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

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Area of Science:

Genomics
Bioinformatics
Microbiology

Background:

Short DNA sequencing reads limit complete microbial chromosome reconstruction.
Manual gap closure in draft assemblies is resource-intensive.
Third-generation, single-molecule sequencing offers longer read lengths, simplifying assembly.

Purpose of the Study:

To evaluate the impact of single-molecule sequencing on microbial genome assembly.
To assess the quality and accuracy of assemblies generated by long-read technology.

Main Methods:

Sequencing and assembly of six bacterial genomes using single-molecule sequencing.
Analysis of repeat complexity in 2,267 complete bacterial and archaeal genomes.
Comparison of single-library assemblies with short-read and hybrid assemblies.

Main Results:

Most bacterial and archaeal genomes can be assembled gaplessly and at finished quality using a single sequencing library.
Single-molecule sequencing assemblies demonstrate higher accuracy than short-read and hybrid approaches.
Repeat complexity analysis supports the feasibility of gapless assembly.

Conclusions:

Automated assembly of long, single-molecule sequencing data lowers microbial genome finishing costs to approximately $1,000.
Expected cost reductions will increase the number of complete microbial genomes.
Improved genome quality will facilitate high-fidelity, population-scale studies of pan-genomes and chromosomal organization.