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Cited by 247

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Scaling metagenome sequence assembly with probabilistic de Bruijn graphs

Open access
Pell, Jason, Hintze, Arend, Canino-Koning, Rosangela, Howe, Adina, Tiedje, James M., Brown, C. Titus·2012·Proceedings of the National Academy of Sciences

Abstract

Deep sequencing has enabled the investigation of a wide range of environmental microbial ecosystems, but the high memory requirements for de novo assembly of short-read shotgun sequencing data from these complex populations are an increasingly large practical barrier. Here we introduce a memory-efficient graph representation with which we can analyze the k -mer connectivity of metagenomic samples. The graph representation is based on a probabilistic data structure, a Bloom filter, that allows us to efficiently store assembly graphs in as little as 4 bits per k -mer, albeit inexactly. We show that this data structure accurately represents DNA assembly graphs in low memory. We apply this data structure to the problem of partitioning assembly graphs into components as a prelude to assembly, and show that this reduces the overall memory requirements for de novo assembly of metagenomes. On one soil metagenome assembly, this approach achieves a nearly 40-fold decrease in the maximum memory requirements for assembly. This probabilistic graph representation is a significant theoretical advance in storing assembly graphs and also yields immediate leverage on metagenomic assembly.

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Metadata

Authors
Pell, J., Hintze, A., Canino-Koning, R., Howe, A., Tiedje, J. M., & Brown, C. T.
Venue
Proceedings of the National Academy of Sciences
Published
2012-07-30
Volume
109
Issue
33
Pages
13272-13277
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2163830511
Cited by
247
References
3
FWCI
11.62
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Scaling metagenome sequence assembly with probabilistic de Bruijn graphs. https://app.cochat.ai/papers/10.1073/pnas.1121464109
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Pell, J., Hintze, A., Canino-Koning, R., Howe, A., Tiedje, J. M., & Brown, C. T. (2012). Scaling metagenome sequence assembly with probabilistic de Bruijn graphs. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1121464109

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