MetaPlatanus: a metagenome assembler that combines long-range sequence links and species-specific features.

Autor:	Kajitani R; School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan., Noguchi H; Advanced Genomics Center, National Institute of Genetics, Mishima, Shizuoka 411-8540, Japan., Gotoh Y; Department of Bacteriology, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan., Ogura Y; Division of Microbiology, Department of Infectious Medicine, Kurume University School of Medicine, Asahi-machi, Kurume, Fukuoka 830-0011, Japan., Yoshimura D; School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan., Okuno M; Division of Microbiology, Department of Infectious Medicine, Kurume University School of Medicine, Asahi-machi, Kurume, Fukuoka 830-0011, Japan., Toyoda A; Advanced Genomics Center, National Institute of Genetics, Mishima, Shizuoka 411-8540, Japan.; Comparative Genomics Laboratory, National Institute of Genetics, Mishima, Shizuoka 411-8540, Japan., Kuwahara T; Department of Molecular Microbiology, Faculty of Medicine, Kagawa University, Miki-cho, Kita-gun, Kagawa 761-0793, Japan., Hayashi T; Department of Bacteriology, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan., Itoh T; School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan.
Jazyk:	angličtina
Zdroj:	Nucleic acids research [Nucleic Acids Res] 2021 Dec 16; Vol. 49 (22), pp. e130.
DOI:	10.1093/nar/gkab831
Abstrakt:	De novo metagenome assembly is effective in assembling multiple draft genomes, including those of uncultured organisms. However, heterogeneity in the metagenome hinders assembly and introduces interspecies misassembly deleterious for downstream analysis. For this purpose, we developed a hybrid metagenome assembler, MetaPlatanus. First, as a characteristic function, it assembles the basic contigs from accurate short reads and then iteratively utilizes long-range sequence links, species-specific sequence compositions, and coverage depth. The binning information was also used to improve contiguity. Benchmarking using mock datasets consisting of known bacteria with long reads or mate pairs revealed the high contiguity MetaPlatanus with a few interspecies misassemblies. For published human gut data with nanopore reads from potable sequencers, MetaPlatanus assembled many biologically important elements, such as coding genes, gene clusters, viral sequences, and over-half bacterial genomes. In the benchmark with published human saliva data with high-throughput nanopore reads, the superiority of MetaPlatanus was considerably more evident. We found that some high-abundance bacterial genomes were assembled only by MetaPlatanus as near-complete. Furthermore, MetaPlatanus can circumvent the limitations of highly fragmented assemblies and frequent interspecies misassembles obtained by the other tools. Overall, the study demonstrates that MetaPlatanus could be an effective approach for exploring large-scale structures in metagenomes. (© The Author(s) 2021. Published by Oxford University Press on behalf of Nucleic Acids Research.)
Databáze:	MEDLINE
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