Bioelectrochemistry and bioenergetics (Lausanne, Switzerland)最新文献_第5页

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Bioelectrochemistry and bioenergetics (Lausanne, Switzerland) Pub Date : 1999-05-01 DOI: 10.1016/S0302-4598(99)00054-9

引用次数: 0

Examination of the relationship between parameters to determine electropermeability of Saccharomyces cerevisiae 测定酿酒酵母电渗透性参数关系的研究

Bioelectrochemistry and bioenergetics (Lausanne, Switzerland) Pub Date : 1999-05-01 DOI: 10.1016/S0302-4598(99)00051-3

Masafumi Muraji , Hiroaki Taniguchi , Wataru Tatebe , Hermann Berg

引用次数: 15

Multiple-pulse-mediated electrofusion of intact erythrocyte onto human term placental amnion 完整红细胞在人足月胎盘羊膜上的多脉冲介导电融合

Bioelectrochemistry and bioenergetics (Lausanne, Switzerland) Pub Date : 1999-05-01 DOI: 10.1016/S0302-4598(99)00042-2

Subrata Biswas, Sujoy K Guha

引用次数: 0

High magnetic field enhances stationary phase-specific transcription activity of Escherichia coli 强磁场增强大肠杆菌固定相特异性转录活性

Bioelectrochemistry and bioenergetics (Lausanne, Switzerland) Pub Date : 1999-05-01 DOI: 10.1016/S0302-4598(99)00023-9

Kohji Tsuchiya , Kazumasa Okuno , Takashi Ano , Kan Tanaka , Hideo Takahashi , Makoto Shoda

{"title":"High magnetic field enhances stationary phase-specific transcription activity of Escherichia coli","authors":"Kohji Tsuchiya , Kazumasa Okuno , Takashi Ano , Kan Tanaka , Hideo Takahashi , Makoto Shoda","doi":"10.1016/S0302-4598(99)00023-9","DOIUrl":"10.1016/S0302-4598(99)00023-9","url":null,"abstract":"<div>When Escherichia coli B was aerobically grown at 37°C under inhomogeneous 5.2–6.1 Tesla (T) magnetic fields in the superconducting magnet biosystem (SBS), the cell number in the stationary phase after the growth had leveled off, was about 3 times higher than that under a geomagnetic field. When the E. coli defective in the rpoS gene which encodes a sigma factor, σs of RNA polymerase and is specifically expressed in the stationary phase was cultivated at 37°C in SBS, such enhancement of cell survival was significantly reduced. The E. coli cells carrying rpoS–lacZ fusion gene or other rpoS dependent genes fused with lacZ were grown, significant increase in the activity of β-galactosidase was observed in the stationary phase under high magnetic field. These data suggest that enhancement of the transcription activity in stationary phase is involved in the higher survival of the cells under magnetic field.</div>","PeriodicalId":79804,"journal":{"name":"Bioelectrochemistry and bioenergetics (Lausanne, Switzerland)","volume":"48 2","pages":"Pages 383-387"},"PeriodicalIF":0.0,"publicationDate":"1999-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0302-4598(99)00023-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21247875","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: 33

Damping and modification of the multiquanta Davydov-like solitons in molecular chains 分子链中多量子类davydov孤子的阻尼和修饰

Bioelectrochemistry and bioenergetics (Lausanne, Switzerland) Pub Date : 1999-05-01 DOI: 10.1016/S0302-4598(99)00014-8

Slobodan Zeković, Zoran Ivić

引用次数: 6

On the possible role of the nitrogen atom in living matter 论氮原子在生物物质中的可能作用

Bioelectrochemistry and bioenergetics (Lausanne, Switzerland) Pub Date : 1999-05-01 DOI: 10.1016/S0302-4598(99)00013-6

Viktor Trkal

引用次数: 0

Unmodified supported thiol/lipid bilayers: studies of structural disorder and conducting mechanism by cyclic voltammetry and AC impedance 未修饰的负载巯基/脂质双分子层:用循环伏安法和交流阻抗法研究结构紊乱和导电机理

Bioelectrochemistry and bioenergetics (Lausanne, Switzerland) Pub Date : 1999-05-01 DOI: 10.1016/S0302-4598(99)00038-0

Peng Diao , Dianlu Jiang , Xiaoli Cui , Dengping Gu , Ruting Tong , Bing Zhong

{"title":"Unmodified supported thiol/lipid bilayers: studies of structural disorder and conducting mechanism by cyclic voltammetry and AC impedance","authors":"Peng Diao , Dianlu Jiang , Xiaoli Cui , Dengping Gu , Ruting Tong , Bing Zhong","doi":"10.1016/S0302-4598(99)00038-0","DOIUrl":"10.1016/S0302-4598(99)00038-0","url":null,"abstract":"<div>Supported thiol/lipid bilayer assembly, one of the most spectacular bilayer systems in recent years, has provided a good model to study biomembranes because of its high mechanical stability. In this work, the structural and conducting property of unmodified Au supported octadecanethiol/phosphatidylcholine bilayers were investigated using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The forming process of bilayer was monitored by capacitance plane plot. The normalized membrane capacitance of supported bilayer is 0.52 μF cm−2. Kinetically controlled voltammograms determined by Butler–Volmer equation were obtained for both thiol monolayer and thiol/lipid bilayer in linear sweep voltammetry. Results of EIS experiment indicate that collapsed sites and pinhole defects exist in thiol monolayer and lipid monolayer, respectively. The difference between the values of experimental and theoretical standard electron transfer rate constant indicates that the conducting mechanism of Au supported thiol monolayer is electron tunneling at collapsed sites. The conducting mechanism of Au supported thiol/lipid bilayer is attributed as the following: the electroactive species could diffuse through pinholes in the lipid monolayer and reach collapsed sites in thiol monolayer, where electron transfer occurs via a tunneling process. The fractional coverage of the lipid monolayer measure by EIS experiments is about 0.98 or higher.</div>","PeriodicalId":79804,"journal":{"name":"Bioelectrochemistry and bioenergetics (Lausanne, Switzerland)","volume":"48 2","pages":"Pages 469-475"},"PeriodicalIF":0.0,"publicationDate":"1999-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0302-4598(99)00038-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21247064","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: 23

Influence of a periodic field on the distant electron transfer in biological systems 周期场对生物系统中远距离电子转移的影响

Bioelectrochemistry and bioenergetics (Lausanne, Switzerland) Pub Date : 1999-05-01 DOI: 10.1016/S0302-4598(99)00035-5

Elmar G. Petrov

引用次数: 2

Genetic programming as an analytical tool for non-linear dielectric spectroscopy 遗传规划作为非线性介电光谱的分析工具

Bioelectrochemistry and bioenergetics (Lausanne, Switzerland) Pub Date : 1999-05-01 DOI: 10.1016/S0302-4598(99)00022-7

Andrew M Woodward, Richard J Gilbert , Douglas B Kell

引用次数: 26

Theoretical aspects of single pulse induced modulation of cell–cell interactions favoring iso-electrofusion 理论方面的单脉冲诱导调制细胞-细胞相互作用有利于等电融合

Bioelectrochemistry and bioenergetics (Lausanne, Switzerland) Pub Date : 1999-05-01 DOI: 10.1016/S0302-4598(99)00041-0

Subrata Biswas, Sujoy K. Guha

引用次数: 0