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Genome Sequences

Complete Genome Sequence of Blautia producta JCM 1471T

Dieter M. Tourlousse, Mitsuo Sakamoto, Takamasa Miura, Koji Narita, Akiko Ohashi, Yoshihito Uchino, Atsushi Yamazoe, Keishi Kameyama, Jun Terauchi, Moriya Ohkuma, Hiroko Kawasaki, Yuji Sekiguchi
David Rasko, Editor
Dieter M. Tourlousse
aBiomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
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Mitsuo Sakamoto
bMicrobe Division/Japan Collection of Microorganisms, RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan
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  • ORCID record for Mitsuo Sakamoto
Takamasa Miura
cBiological Resource Center, National Institute of Technology and Evaluation (NITE), Kisarazu, Chiba, Japan
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Koji Narita
dJapan Microbiome Consortium (JMBC), Osaka, Osaka, Japan
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Akiko Ohashi
aBiomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
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Yoshihito Uchino
cBiological Resource Center, National Institute of Technology and Evaluation (NITE), Kisarazu, Chiba, Japan
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Atsushi Yamazoe
cBiological Resource Center, National Institute of Technology and Evaluation (NITE), Kisarazu, Chiba, Japan
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Keishi Kameyama
dJapan Microbiome Consortium (JMBC), Osaka, Osaka, Japan
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Jun Terauchi
dJapan Microbiome Consortium (JMBC), Osaka, Osaka, Japan
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Moriya Ohkuma
bMicrobe Division/Japan Collection of Microorganisms, RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan
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Hiroko Kawasaki
cBiological Resource Center, National Institute of Technology and Evaluation (NITE), Kisarazu, Chiba, Japan
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Yuji Sekiguchi
aBiomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
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David Rasko
University of Maryland School of Medicine
Roles: Editor
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DOI: 10.1128/MRA.00141-20
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ABSTRACT

We report a complete genome sequence of Blautia producta JCM 1471T. The genome consists of a single circular chromosome of 6,197,116 bp with a G+C content of 45.7%. The genome was annotated as containing 5 complete sets of rRNA genes, 70 tRNA genes, and 5,516 protein-coding sequences.

ANNOUNCEMENT

The genus Blautia comprises some of the most abundant bacteria in the human gastrointestinal tract (1). Blautia spp. are thought to be important players in human health and disease based on the correlation between Blautia abundance and various health conditions, including diminished abundance in the elderly (2) and in patients with colorectal cancer (3). An abundance of Blautia was also associated with risk of death from acute graft-versus-host disease (4) and visceral fat accumulation (5). Within the genus, Blautia producta was identified as a key species responsible for restoration of colonization resistance against vancomycin-resistant enterococci (6), which was attributed to secretion of a lantibiotic (7). Here, we used Illumina and Oxford Nanopore Technologies (ONT) sequencing to generate a complete genome sequence of B. producta JCM 1471T, the authentic type strain of B. producta, formerly known as Ruminococcus productus (8).

Cells were obtained from the Japan Collection of Microorganisms and cultured under an N2 atmosphere in modified GAM broth with 1% glucose; DNA was purified using the EZ1 DNA tissue kit (Qiagen). Short-read Illumina libraries were constructed with the TruSeq Nano DNA kit and sequenced on a MiSeq instrument using V2 chemistry (2 × 251-bp reads) at a coverage of ∼100×. For ONT sequencing, libraries were prepared with the ligation sequencing kit (SQK-LSK109) and native barcoding expansion pack (EXP-NBD104). Sequencing was run on an R9.4.1 flow cell (FLO-MIN106) using the MinION device. Default parameters were used for all software for read processing and assembly unless indicated otherwise. Illumina sequencing reads were processed with Trimmomatic v0.38 (9), yielding 2,676,800 reads for assembly. For ONT sequencing, bases were called with Guppy v3.1.5 in high-accuracy mode, along with library demultiplexing and trimming of barcodes. After additional trimming of remaining barcodes with Porechop v0.2.4 (https://github.com/rrwick/Porechop) and removal of reads with a length of <1,000 bp or a quality score of <9 with NanoFilt v2.5.0 (10), Filtlong v0.2.0 (https://github.com/rrwick/Filtlong) was employed to eliminate the poorest 10% of read bases using the Illumina reads as references. This resulted in a total of 61,232 ONT reads with an N50 value of 7,955 bp and coverage of ∼70×. Hybrid assembly of the Illumina and ONT reads was performed with Unicycler v0.4.7 (11) and run in bold mode using a long-read assembly generated using Flye v2.5 (12). The NCBI Prokaryotic Genome Annotation Pipeline v4.11 (13) was used for genome annotation.

The genome assembly of B. producta JCM 1471T consists of a single circular chromosome with a length of 6,197,116 bp and a G+C content of 45.7%. Annotation identified 5 complete sets of rRNA genes, along with 70 tRNA genes and 5,516 protein-coding sequences. The availability of a complete genome of B. producta JCM 1471T will aid in advancing our understanding of the role of B. producta in the human gut by providing insights into its genomically encoded functional gene repertoire.

Data availability.The genome sequence described here has been deposited in DDBJ/EMBL/GenBank under the accession number CP048626. The raw Illumina and ONT sequencing reads are available in the Sequence Read Archive (SRA) under the accession numbers SRR10968453 and SRR10968454, respectively.

ACKNOWLEDGMENT

This research was supported by the New Energy and Industrial Technology Development Organization (NEDO), Japan, as part of a research program for establishing standards in human microbiome community measurements.

FOOTNOTES

    • Received 17 February 2020.
    • Accepted 6 April 2020.
    • Published 23 April 2020.
  • Copyright © 2020 Tourlousse et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license.

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Complete Genome Sequence of Blautia producta JCM 1471T
Dieter M. Tourlousse, Mitsuo Sakamoto, Takamasa Miura, Koji Narita, Akiko Ohashi, Yoshihito Uchino, Atsushi Yamazoe, Keishi Kameyama, Jun Terauchi, Moriya Ohkuma, Hiroko Kawasaki, Yuji Sekiguchi
Microbiology Resource Announcements Apr 2020, 9 (17) e00141-20; DOI: 10.1128/MRA.00141-20

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Complete Genome Sequence of Blautia producta JCM 1471T
Dieter M. Tourlousse, Mitsuo Sakamoto, Takamasa Miura, Koji Narita, Akiko Ohashi, Yoshihito Uchino, Atsushi Yamazoe, Keishi Kameyama, Jun Terauchi, Moriya Ohkuma, Hiroko Kawasaki, Yuji Sekiguchi
Microbiology Resource Announcements Apr 2020, 9 (17) e00141-20; DOI: 10.1128/MRA.00141-20
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