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Showing 1 to 20 of 43 for “"shewanella"”.
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Bioreduction of Hematite Nanoparticles by Shewanella oneidensis MR-1
… mechanism may be simultaneously employed by Shewanella oneidensis MR-1 during solid-phase metal reduction. This conclusion is supported by analysis of the bioreduction kinetics of hematite nanoparticles coupled with microscopic investigations of cell-mineral interactions. The reduction …
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Electrical current generation by wild type and mutant Shewanella strains
The genus Shewanella has been reported to have the capacity to couple the transfer of electrons to insoluble metal oxides and solid carbon electrodes with cellular growth. While this process may be useful as an energy generation strategy or biotechnological tool, the electron transfer pathway by …
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The physiological role and characterization of melanin produced by Shewanella algae BrY
<p>Shewanella algae BrY is a Gram negative, facultative anaerobe isolated from the Great Bay Estuary of New Hampshire. This member of the gamma Proteobacteria demonstrates extensive versatility in the variety of terminal electron acceptors it uses for anaerobic respiration. Since the natural …
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Characterisation of OmcA From Shewanella oneidensis MR-1: Biophysical and Mineral Reduction Properties
Several!Shewanella(spp!are!versatile!in!the!respiratory!substrates!they!use.! A! novel! set! of! respiratory! substrates! implicated! are! insoluble! Fe(III)! and! Mn(III,IV)! oxides.! OmcA! from! Shewanella( oneidensis( MR?1! plays! a! role! in! the! …
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Biofilm formation by Shewanella oneidensis MR-1 towards fundamental understanding of anode respiring communities
… organism associated with microbial fuel cells is Shewanella oneidensis, containing multiple EET mechanisms and an apparent inability to form multi-layered biofilms in anaerobic culturing, i.e. microbial fuel cell operating conditions. In contrast to G. sulfurreducens, S. oneidensis biofilm …
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Structural and spectroscopic studies on the porin-cytochrome complex from Shewanella oneidensis MR-1
… process"of"dissimilatory"metal"reduction"(DMR)"in"Shewanella(oneidensis." "" The"properties"of" the"decaheme"protein"MtrA"as"well"as"a" truncated"version"of" this"protein" were" investigated" using" analytical" ultracentrifugation" (AUC)," small" angle" X!ray" scattering" (SAXS)" and" …
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Shewanella oneidensis MR-1 cell-to-cell signaling and its influences on biogeochemical processes
… sensing (cell-to-cell signaling) abilities of Shewanella oneidensis MR-1, a Gram-negative bacterium well known for its ability to use geologic substrates, such as Fe and Mn oxides, for respiratory purposes. Overall our results show that S. oneidensis cannot utilize either an acyl-homoserine …
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Removal of colour from solutions of azo dyes using bacterial cells (Shewanella strain J18 143)
… of related research reports. The bacterium, Shewanella strain J 18 143, has been reported to be capable of directly inducing the reduction of azo bonds in reactive azo dyes and, indirectly being involved in the reduction of azo/ketohydrazone chromophores in pigment molecules. Two approaches …
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Transcriptional Regulation of Shewanella oneidensis Using Native TMAO-Inducible Promoters in a Plasmid-Free System
Shewanella species are well known for their ability to respire a multitude of compounds, including insoluble extracellular metals. Shewanella oneidensis MR-1 has emerged as a model organism for understanding the process of extracellular electron transport (EET), in which cells transfer …
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Mechanisms and ecological implications of resistance to predation by heterotrophic ciliates expressed by marine bacteria
… survival. Intracellular survival was employed by Shewanella spp. as T. pyriformis feeding on these organisms led to expulsion of Shewanella-filled vacuoles into the external milieu. The role of intracellular survival as an environmental persistence mechanism for Shewanella sp. cp20 was …
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Isotopic fractionation of chromium and uranium during abiotic and microbial Cr(VI) reduction and microbial U(VI) reduction
… diverse bacteria (G. sulfurreducens, Shewanella sp. (Neckar River), P stutzeri DCP-Ps1 and D. vulgaris). The results can be used to interpret Cr isotope data from a wide range of geochemical settings involving abiotic and microbial Cr(VI) reduction. Similar to Cr, the geochemical …
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The behavior of uranium in the environment : bacterial reduction of an aqueous uranium species
… anaerobic environment. Laboratory studies used Shewanella putrefaciens because of its ability to grow rapidly in aerobic conditions and reduce metals in anaerobic conditions. Under anaerobic conditions, Shewanella putrefaciens use aqueous uranium as the electron acceptor in lieu of oxygen. The …
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Electrical-phenotyping of the bacterial envelope using microfluidics
… activities, including Geobacter sulfurreducens, Shewanella oneidensis, and Escherichia coli heterologously expressing Shewanella EET pathways. We also applied 3DiDEP to achieve rapid quantification of LPS, the major component and virulence determinant in Gram-negative bacterial outer membrane. We …
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Microbial Biofilm Development and Electron Transfer in Electrochemical Systems
… particularly, for the facultative anaerobe Shewanella oneidensis MR-1. These systems consist of microbial fuel cells (MFCs) whose anode component will be evaluated with regards to performance, electrical current generation, and microbial coverage and biofilm development. A better …
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Antibiotic Resistance Genes in Marquette County Michigan's Wastewater
… or exhibit strong resistance mechanisms: <em>Shewanella xiamenensis</em>, <em>Klebsiella oxytoca</em>, and <em>Pseudomonas aeruginosa</em>. These results can guide public health authorities evaluating community resistance risks and physicians selecting effective antibiotics.</p>
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Implementation of nano-liquid chromatography hyphenated to tandem mass spectrometry for protein identification in gel and non-gel based proteomics
… of the dissimilatory iron-reducing bacterium Shewanella oneidensis MR-1 grown on ferric oxide (Chapter V) and the effect of a short-term heat shock on the plant barley (Chapter VI). Part III deals with the development of alternative strategies for the analysis of membrane proteins. A special …
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Development of Integrated Photobioelectrochemical System (IPB): Processes, Modeling and Applications
… application of stable isotope probing to study Shewanella oneidensis MR-1 in the MFCs. Chapters 6 to 8 describe the application of models to optimize MFC and IPB system performance. Chapter 9 describes the strategy improvement for the algal harvesting in IPB. Chapter 10 describes the application …
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Engineering outer-membrane electron transfer proteins for modular biotic-abiotic interfacing with living cells
The electrogenic bacterium Shewanella oneidensis utilises the MtrCAB protein complex to transfer electrons across the outer membrane, forming a biotic-abiotic interface that can be harnessed for energy generation, biosensing, microbial electrosynthesis and cell signalling. Within this complex, the …
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