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学科主题: Biotechnology & Applied Microbiology; Microbiology
题名: Energy Generation Coupled to Azoreduction by Membranous Vesicles from Shewanella decolorationis S12
作者: Hong, YG ; Guo, J ; Sun, GP
通讯作者: yghong@scsio.ac.in
关键词: Membranous vesicles ; azoreduction ; energy conservation ; Shewanella decolorationis S12
刊名: JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY
发表日期: 2009
卷: 19, 期:1, 页:37-41
收录类别: sci
部门归属: [Hong, Yi-Guo] Chinese Acad Sci, S China Sea Inst Oceanol, Key Lab Trop Marine Environm Dynam LED, Guangzhou 510301, Guangdong, Peoples R China; [Guo, Jun; Sun, Guo-Ping] Guangdong Inst Microbiol, Guangzhou 510070, Guangdong, Peoples R China
项目归属: LED
摘要: Previous studies have demonstrated that Shewanella decolorationis S12 can grow on the azo compound amaranth as the sole electron acceptor. Thus, to explore the mechanism of energy generation in this metabolism, membranous vesicles (MVs) were prepared and the mechanism of energy generation was investigated. The membrane, which was fragmentized during preparation, automatically formed vesicles ranging from 37.5-112.5 nm in diameter under electron micrograph observation. Energy was conserved when coupling the azoreduction by the MVs of an azo compound or Fe(III) as the sole electron acceptor with H-2, formate, or lactate as the electron donor. The amaranth reduction by the vesicles was found to be inhibited by specific respiratory inhibitors, including Cu2+ ions, dicumarol, stigmatellin, and metyrapone, indicating that the azoreduction was indeed a respiration reaction. This finding was further confirmed by the fact that the ATP synthesis was repressed by the ATPase inhibitor N,N'-dicyclohexylcarbodiimide (DCCD). Therefore, this study offers solid evidence of a mechanism of microbial dissimilatory azoreduction on a subcell level.
原文出处: 查看原文
WOS记录号: WOS:000262902900005
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/6153
Appears in Collections:热带海洋环境动力实验室(LTO)_期刊论文

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Recommended Citation:
Hong, YG; Guo, J; Sun, GP.Energy Generation Coupled to Azoreduction by Membranous Vesicles from Shewanella decolorationis S12,JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY,2009,19(1):37-41
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文件名: Energy Generation Coupled to Azoreduction by Membranous Vesicles from Shewanella decolorationis S12.pdf
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