Journal of Japanese Society for Extremophiles最新文献

Occurrence of Extreme Thermophiles, Thermaerobacter spp., in Sewage Sludge 极端嗜热菌热杆菌在污水污泥中的出现

Journal of Japanese Society for Extremophiles Pub Date : 2010-12-01 DOI: 10.3118/JJSE.9.67

Kota Shiotsuka, A. Tanaka, K. Sakai

引用次数: 3

Journal of Japanese Society for Extremophiles Pub Date : 2010-12-01 DOI: 10.3118/JJSE.9.57

正博亀倉

引用次数: 0

Characterization of a Haloarchaeal GH Family 18 Chitinase with Additional Acidic Amino Acids on Its Protein Surface 盐古菌GH家族18几丁质酶蛋白表面附加酸性氨基酸的特性研究

Journal of Japanese Society for Extremophiles Pub Date : 2010-12-01 DOI: 10.3118/JJSE.9.72

Y. Zhang, R. An, R. Yatsunami, M. Sato, K. Orishimo, Y. Hatori, T. Fukui, Satoshi Nakamura

引用次数: 2

A tertiary-branched tetra-amine, N4-aminopropylspermidine is a major cellular polyamine in an anaerobic thermophile, Caldisericum exile belonging to a new bacterial phylum, Caldiserica 三支四胺n4 -氨基丙基亚精胺是一种厌氧性嗜热菌Caldiserica的主要细胞多胺，属于一个新的细菌门Caldiserica

Journal of Japanese Society for Extremophiles Pub Date : 2010-12-01 DOI: 10.3118/JJSE.9.75

K. Hamana, H. Hayashi, M. Niitsu

引用次数: 2

Dissimilatory Fe (III) reduction by cytochrome c-552 in a thermophilic, obligately chemolithoautotrophic bacterium, Hydrogenobacter thermophilus TK-6 嗜热嗜热氢杆菌TK-6中细胞色素c-552对Fe (III)的异化还原

Journal of Japanese Society for Extremophiles Pub Date : 2010-12-01 DOI: 10.3118/JJSE.9.61

N. Yoshida, N. Ohmura, N. Matsumoto, K. Sasaki, H. Saiki, H. Arai, M. Ishii, Y. Igarashi

引用次数: 0

The tardigrade Ramazzottius varieornatus as a model of extremotolerant animals 作为极端耐受性动物模型的缓步动物

Journal of Japanese Society for Extremophiles Pub Date : 1900-01-01 DOI: 10.3118/JJSE.7.2.25

D. Horikawa

引用次数: 1

Phylogenetic analysis of pectin degrading yeasts from deep-sea environments 深海环境中果胶降解酵母的系统发育分析

Journal of Japanese Society for Extremophiles Pub Date : 1900-01-01 DOI: 10.3118/JJSE.5.21

H. Minegishi, Takeshi Miura, Yasuhiko Yoshida, R. Usami, F. Abe

引用次数: 9

Polyamine analysis of methanogens, thermophiles and extreme halophiles belonging to the domain Archaea 古菌领域产甲烷菌、嗜热菌和极端嗜盐菌的多胺分析

Journal of Japanese Society for Extremophiles Pub Date : 1900-01-01 DOI: 10.3118/JJSE.6.25

K. Hamana, Ryuichi Hosoya, T. Itoh

{"title":"Polyamine analysis of methanogens, thermophiles and extreme halophiles belonging to the domain Archaea","authors":"K. Hamana, Ryuichi Hosoya, T. Itoh","doi":"10.3118/JJSE.6.25","DOIUrl":"https://doi.org/10.3118/JJSE.6.25","url":null,"abstract":"Cellular polyamines of 61 archaeal newly published strains were analyzed by HPLC to evaluate correlation of polyamine profiles to their extremophily and chemotaxonomy. A quaternary branched penta-amine, N4-bis( aminopropyl )spermidine, was found in hyperthermophilic Methanocaldococcus and Methanotorris belonging to the family Methanocaldococcaceae but not in the family Methanococcaceae nor any other methanogenic archaeal orders. Hyperthermophilic / extremely thermophilic Palaeococcus, Thermococcus and Pyrococcus of the order Thermococcales ubiquitously contained the branched penta-amine. Mesophilic, extreme halophiles including halo-alkaliphiles, belonging to the order Halobacteriales, contained a trace of spermidine, spermine and agmatine. In the phylum Crenarchaeota, extremely thermophilic Caldisphaera of the provisional order 'Caldisphaerales' contained norspermidine, spermidine and agmatine, and hyperthermophilic Pyrobaculum belonging to the order Thermoproteales contained norspermidine, spermidine, norspermine and spermine, but not any penta-amines. Within the order Desulfurococcales, Desulfurococcus and Ignisphaera contained spermidine, norspermidine, homospermidine, norspermine and spermine, whereas Aeropyrum contained caldopentamine and thermopentamine in addition to these triamines and tetra-amines.","PeriodicalId":204480,"journal":{"name":"Journal of Japanese Society for Extremophiles","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125679001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

Expression of Bacterial Genome under Soil Environment 土壤环境下细菌基因组的表达

Journal of Japanese Society for Extremophiles Pub Date : 1900-01-01 DOI: 10.3118/JJSE.6.59

M. Tuda

{"title":"Expression of Bacterial Genome under Soil Environment","authors":"M. Tuda","doi":"10.3118/JJSE.6.59","DOIUrl":"https://doi.org/10.3118/JJSE.6.59","url":null,"abstract":"様々な自然生態系から多種多様な生物現象を示す微生物株が数多く分離され、先人たちは実験室で純粋培養したこれら微生物をいろいろな角度から検討することで、個々の生物機能の分子メカニズム、そして、システムとしての細胞や同一株集団における当該生物機能の発現様式の詳細を明らかにしてきた。その一方で、物理的、化学的並びに生物学的に複雑な環境要因の大規模な変動に曝される複合生物系の自然生態系で、研究対象としてきた環境微生物が実験室で純粋培養したときと同じような様式で生物機能を発揮しているのかという、シンプルだが最も重要な問題は手がつけられないでいた。この類の包括的な研究は、微生物の持つ生物機能を人間が自然環境で利用するバイオレメディエーションなどをはじめとする応用分野において、とりわけ重要である。そして、生物機能を直接支配する個々の特定遺伝子の生態系での量的変動や発現などの記載が行われてきた結果、生態系での遺伝子発現は実験室系の単独培養時の発現とは異なっていると提唱されるようになった。ただ、この提唱には曖昧なところがたいへん多く、この原因として、How とか Why という観点での研究を展開するための手法が不備であったことがあげられる。一方、動植物病原細菌を扱う研究者は 1990 年代より、感染モデル生物を「培養装置」と見立て、この環境で菌の生存・増殖に必要な遺伝子や特異的に発現する遺伝子をゲノムワイドに探索・解析することで、病原細菌の「培養装置」での「真の」生きざまを明らかにし、病原性発揮に直接的並びに間接的に必要な遺伝子群の総合的理解を深めてきた(1, 2)。このような方向性を持った研究は、微生物ゲノムの全塩基配列決定が容易になるにつれ、さらに進展している。他方、環境細菌においては、土壌などの自然環境を「培養装置」と見立て、本環境で生存・増殖に必要な遺伝子や特異的に発現する遺伝子を探索・解析する研究がなかったが、この数年の間に自然環境での微生物の特定遺伝子やゲノム全体の発現を解析する手法が急速に確立されてきた (3)。本稿では、土壌環境で実際に機能している遺伝子をどのように検索・解析するかについて、我々の最近の研究例(4)を簡単に紹介する。","PeriodicalId":204480,"journal":{"name":"Journal of Japanese Society for Extremophiles","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121622957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Distribution of long linear and branched polyamines in the thermophiles belonging to the domain Bacteria 属细菌域的嗜热菌中长线性和支化多胺的分布

Journal of Japanese Society for Extremophiles Pub Date : 1900-01-01 DOI: 10.3118/JJSE.7.1.10

K. Hamana, Ryuichi Hosoya, A. Yokota, M. Niitsu, H. Hayashi, T. Itoh

{"title":"Distribution of long linear and branched polyamines in the thermophiles belonging to the domain Bacteria","authors":"K. Hamana, Ryuichi Hosoya, A. Yokota, M. Niitsu, H. Hayashi, T. Itoh","doi":"10.3118/JJSE.7.1.10","DOIUrl":"https://doi.org/10.3118/JJSE.7.1.10","url":null,"abstract":"Cellular polyamines of 44 newly validated eubacterial thermophiles growing at 45-80°C, belonging to eight orders (six phyla) of the domain Bacteria, were analyzed by HPLC and GC. A quaternary branched penta-amine, N4-bis(aminopropyl)norspermidine, was found in Hydrogenivirga and Sulfurihydrogenibium belonging to the order of Aquificales. Another quaternary branched penta-amine, N4-bis(aminopropyl) spermidine, was detected in Thermovibrio, Desulfurobacterium (Aquificales), Moorella, Desul-fovirgula (Thermoanaerobacteriales), Thermaerobacter (Clostridiales), Caldalkalibacillus, Thermobacillus (Bacillales), and Desulfothermus (Desulfovibrionales of the phylum Proteobacteria). The two branched penta- amines as well as linear penta- and hexa-amines were produced by Thermus species of the order Thermales. Marinitoga and Fervidobacterium (Thermotogales) contained linear penta-amines. The production of these long polyamines was dependent on culture temperature and remarkable at 70-80°C in the extreme/ hyper-thermophiles and to alkaline medium pH 8.5-9.0 in moderately thermophilic bacilli. The long polyamines were not detected in moderately thermophilic Anaerolinea (Anaerolineales of the phylum Chloroflexi). Distribution of either or both long linear polyamines and/or quaternary branched polyamines in the extreme/hyper-thermophiles is also reflected in their phylogenetical evolved locations.","PeriodicalId":204480,"journal":{"name":"Journal of Japanese Society for Extremophiles","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127822585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7