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論文

Draft genome sequence of ${it Methylobacterium}$ sp. ME121, isolated from soil as a mixed single colony with ${it Kaistia}$ sp. 32K

藤浪 俊*; 武田 喜代子*; 小野寺 威文*; 佐藤 勝也; 清水 哲*; 若林 佑*; 鳴海 一成*; 中村 顕*; 伊藤 政博*

Genome Announcements (Internet), 3(5), p.e01005-15_1 - e01005-15_2, 2015/09

https://doi.org/10.1128/genomeA.01005-15

${it Methylobacterium}$ sp. ME121 was isolated from soil as a mixed single colony with ${it Kaistia}$ sp. 32K during our screening of L-glucose-utilizing microorganisms, and its growth was enhanced by coculture. It was expected that genomic analysis of this bacterium would provide novel information on coculture-dependent growth enhancement. The genomic information of symbiotic bacteria could be of use for studying the molecular mechanisms underlying microbial symbiosis. The draft genome sequence of ${it Methylobacterium}$sp. ME121 is 7,096,979 bp in total length and comprises 197 large contigs ($$>$$ 500 bp) that was deposited at DDBJ/EMBL/GenBank under the accession number BBUX00000000. The draft genome sequence shows that ${it Methylobacterium}$ sp. ME121 has some genes that encode putative methanol/ethanol family PQQ-dependent dehydrogenases involved in methylotrophy. Some unknown factor provided by the coculture may contribute to increase the growth of ${it Methylobacterium}$ sp. ME121.

論文

Draft genome sequence of ${it Bacillus alcalophilus}$ AV1934, a classic alkaliphile isolated from human feces in 1934

Attie, O.*; Jayaprakash, A.*; Shah, H.*; Paulsen, I. T.*; 守野 正人*; 高橋 優嘉*; 鳴海 一成*; Sachidanandam, R.*; 佐藤 勝也; 伊藤 政博*; et al.

Genome Announcements (Internet), 2(6), p.e01175-14_1 - e01175-14_2, 2014/11

https://doi.org/10.1128/genomeA.01175-14

The alkaliphilic bacterium ${it Bacillus alcalophilus}$ AV1934, isolated from human feces, recent has indicated novel potassium ion coupling to motility in this extremophile. We report draft sequences that will facilitate an examination of whether that coupling is part of a larger cycle of potassium ion-coupled transporters. This draft genome has 4,095 predicted genes and 4,063 predicted proteins. The whole-genome shotgun project has been deposited in Genbank under the accession no. ALPT02000000. In addition to the ${it mot}$ genes encoding the MotPS channel that uses either potassium or sodium coupling, two loci encoding multisubunit Mrp-type antiporters, were found. The ${it B. alcalophilus}$ AV1934 genome reveals no tripartite ATP-independent (TRAP-T family) uptake systems, a major sodium-coupled complement in the other two alkaliphiles. The ${it B. alcalophilus}$ AV1934 genomic data will enable us to test the hypothesis of a major role of potassium in ion coupling in this extremophile.

論文

Draft genome sequence of calcium-dependent ${it Paenibacillus}$ sp. strain TCA20, isolated from a hot spring containing a high concentration of calcium ions

藤浪 俊*; 武田 喜代子*; 小野寺 威文*; 佐藤 勝也; 佐野 元彦*; 高橋 優嘉*; 鳴海 一成*; 伊藤 政博*

Genome Announcements (Internet), 2(5), p.e00866-14_1 - e00866-14_2, 2014/09

https://doi.org/10.1128/genomeA.00866-14

Calcium-dependent ${it Paenibacillus}$ sp. strain TCA20 was isolated from a water sample of a hot spring containing a high concentration of calcium ions. Here, we report the draft genome sequence of this bacterium, which may be the basis for the research of calcium ion homeostasis. The draft genome sequence of ${it Paenibacillus}$ sp. strain TCA20 totals 5,631,463 bp in length and is composed of 33 large contigs ($$>$$ 500 bp) that was deposited at DDBJ/EMBL/Genbank under the accession no. BBIW00000000. The annotation of the draft genome sequence shows that ${it Paenibacillus}$ sp. strain TCA20 has a calcium-specific calcium/proton antiporter, ChaA, and a P-type calcium-transporting ATPase, YloB, was identified as calcium transporters. These transporters may also be important for the growth of ${it Paenibacillus}$ sp. strain TCA20 under the high concentration of calcium ions.

論文

Draft genome sequence of potassium-dependent alkaliphilic ${it Bacillus}$ sp. strain TS-2, isolated from a jumping spider

藤浪 俊*; 武田 喜代子*; 小野寺 威文*; 佐藤 勝也; 佐野 元彦*; 鳴海 一成*; 伊藤 政博*

Genome Announcements (Internet), 2(3), p.e00458-14_1 - e00458-14_2, 2014/05

https://doi.org/10.1128/genomeA.00458-14

The potassium-dependent alkaliphilic ${it Bacillus}$ sp. strain TS-2 was isolated from the mashed extract of a jumping spider, and its draft genome sequence was obtained. Comparative genomic analysis with a previously sequenced sodium-dependent alkaliphilic ${it Bacillus}$ species may reveal potassium-dependent alkaline adaptation mechanisms. The draft genome sequence of ${it Bacillus}$ sp. strain TS-2 was 4,360,646 bp in total length, comprised 58 large contigs ($$>$$ 500 bp) that was deposited at DDBJ/EMBL/Genbank under the accession number BAWL00000000. In the draft genome sequence of ${it Bacillus}$ sp. strain TS-2, two sets of ${it mrp}$ genes, which encode multisubunit secondary cation/proton antiporter-3 family proteins, were annotated. The Mrp complex acts as an Na$$^{+}$$/H$$^{+}$$ antiporter in typical alkaliphilic ${it Bacillus}$ species and plays a critical role in the sodium-dependent alkaline adaptation mechanism.

論文

Draft genome sequence of sodium-independent alkaliphilic ${it Microbacterium}$ sp. strain TS-1

藤浪 俊*; 武田 喜代子; 小野寺 威文*; 佐藤 勝也; 佐野 元彦*; 鳴海 一成*; 伊藤 政博*

Genome Announcements (Internet), 1(6), P. e01043-13, 2013/12

https://doi.org/10.1128/genomeA.01043-13

Alkaliphilic ${it Microbacterium}$ sp. strain TS-1, newly isolated from the jumping spider, showed Na$$^{+}$$-independent growth and motility. Here, we report the draft genome sequence of this bacterium, which may provide beneficial information for Na$$^{+}$$-independent alkaline adaptation mechanisms. The draft genome sequence of ${it Microbacterium}$ sp. strain TS-1 was 3,396,165 bp in total length and comprised 3 large contigs (2,699,404 bp, 691,278 bp, and 5,483 bp) that was deposited at DDBJ/ EMBL/GenBank under the accession number BASQ00000000. The annotation of the draft genome sequence indicated that this bacterium has 3 sets of ${it mrp}$ genes, which encode multisubunit secondary cation/proton antiporter-3 family proteins for pH homeostasis. The annotation also indicated that this bacterium has genes involved in chemotaxis/flagellar components, including one set of ${it mot}$ genes.

論文

Recent progress in the energy recovery linac project in Japan

坂中 章悟*; 明本 光生*; 青戸 智浩*; 荒川 大*; 浅岡 聖二*; 榎本 収志*; 福田 茂樹*; 古川 和朗*; 古屋 貴章*; 芳賀 開一*; et al.

Proceedings of 1st International Particle Accelerator Conference (IPAC '10) (Internet), p.2338 - 2340, 2010/05

http://accelconf.web.cern.ch/AccelConf/IPAC10/papers/tupe091.pdf

日本においてERL型放射光源を共同研究チームで提案している。電子銃,超伝導加速空洞などの要素技術開発を進めている。また、ERL技術の実証のためのコンパクトERLの建設も進めている。これら日本におけるERL技術開発の現状について報告する。

論文

Progress in R&D efforts on the energy recovery linac in Japan

坂中 章悟*; 吾郷 智紀*; 榎本 収志*; 福田 茂樹*; 古川 和朗*; 古屋 貴章*; 芳賀 開一*; 原田 健太郎*; 平松 成範*; 本田 融*; et al.

Proceedings of 11th European Particle Accelerator Conference (EPAC '08) (CD-ROM), p.205 - 207, 2008/06

コヒーレントX線,フェムト秒X線の発生が可能な次世代放射光源としてエネルギー回収型リニアック(ERL)が提案されており、その実現に向けた要素技術の研究開発が日本国内の複数研究機関の協力のもと進められている。本稿では、ERL放射光源の研究開発の現状を報告する。

口頭

カルシウム含有量が高い弱アルカリ温泉から分離された${it Paenibacillus}$ sp. TCA20株の生理化学的性質とゲノム解析

今澤 陸*; 藤浪 俊*; 高橋 優嘉*; 佐藤 勝也; 鳴海 一成*; 伊藤 政博*

no journal, , 

細胞の生育に大きく関与するCa$$^{2+}$$は、細胞内でその濃度が厳密に調節されている。しかし、原核生物の細胞内Ca$$^{2+}$$濃度の調節機構については、未だ不明な点が多い。本研究では、カルシウム含有量が高い弱アルカリ性温泉地から分離されたCa$$^{2+}$$を生育に要求する${it Paenibacillus}$ sp. TCA20株を用いて、細胞内外のCa$$^{2+}$$サイクルの詳細を理解するために、ゲノム解析を行った。その結果、Ca$$^{2+}$$/H$$^{+}$$アンチポーターをコードする${it chaA}$遺伝子およびP型Ca$$^{2+}$$-ATPaseをコードする${it yloB}$遺伝子のホモログを持つことから、これらの遺伝子群がCa$$^{2+}$$サイクルや生育に重要である可能性が示唆された。

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