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28 results for “Shewanella oneidensis”
Identification of a Pathway for Electron Uptake in Shewanella oneidensis
<p>Data for figures for "Identification of a Pathway for Electron Uptake in <em>Shewanella oneidensis</em>"</p> <p><strong>Abstract</strong></p> <p>Extracellular electron transfer (EET) could enable electron uptake into microbial metabolism for the synthesis of complex, energy dense organic molecules from CO<sub>2 </sub>and renewable electricity<sup>1-6</sup><sup> </sup>. Theoretically EET could do this with an efficiency comparable to H<sub>2</sub>-oxidation<sup>7,8</sup> but without the need for a volatile intermediate and the problems it causes for scale up<sup>9</sup>. However, significant gaps remain in understanding the mechanism and genetics of electron uptake. For example, studies of electron uptake in electroactive microbes have shown a role for the Mtr EET complex in the electroactive microbe <em>Shewanella oneidensis</em> MR-1<sup>10-14</sup>, though there is substantial variation in the magnitude of effect deletion of these genes has depending on the terminal electron acceptor used. This speaks to the potential for novel and/or differentially utilized genes involved in electron uptake. To address this, we screened gene disruption mutants for 3,667 genes, representing ≈ 99% of all non-essential genes, from the <em>S. oneidensis</em>whole genome knockout collection using a redox dye oxidation assay. Confirmation of electron uptake using electrochemical testing allowed us to identify five genes from <em>S.</em><em> oneidensis</em> that are indispensable for electron uptake from a cathode. Knockout of each gene eliminates extracellular electron uptake, yet in four of the five cases produces no significant defect in electron donation to an anode. This result highlights both distinct electron uptake components and an electronic connection between aerobic and anaerobic electron transport chains that allow electrons from the reversible EET machinery to be coupled to different respiratory processes in <em>S. oneidensis</em>. Homologs to these genes across many different genera suggesting that electron uptake by EET coupled to respiration could be widespread. These gene discoveries provide a foundation for: studying this phenotype in exotic metal-oxidizing microbes, genetic optimization of electron uptake in <em>S. oneidensis</em>; and genetically engineering electron uptake into a highly tractable host like <em>E. coli </em>to complement recent advances in synthetic CO<sub>2</sub> fixation<sup>15</sup>.</p>
Response of Shewanella oneidensis wild type and arcA mutant strains to H2O2
GEO Series GSE31053. Shewanella oneidensis; Shewanella oneidensis MR-1. 8 samples. Type: Expression profiling by array.
Electrochemical selection and characterization of a high current-generating Shewanella oneidensis mutant with altered cell-surface morphology and biofilm-related gene expression
GEO Series GSE50443. Shewanella oneidensis MR-1; Shewanella oneidensis. 6 samples. Type: Expression profiling by array.
The small RNA RyhB is a regulator of cytochrome expression in Shewanella oneidensis
GEO Series GSE104952. Shewanella oneidensis. 15 samples. Type: Expression profiling by high throughput sequencing.
Shewanella oneidensis MR-1 etrA deletion mutant strain expression profiling determines fine-tuning regulatory role in anaerobic metabolism
GEO Series GSE26935. Shewanella oneidensis MR-1. 6 samples. Type: Expression profiling by array.
Identification of an ECF sigma factor that facilitates electroactive biofilm formation by Shewanella oneidensis MR-1
GEO Series GSE142643. Shewanella oneidensis; Shewanella oneidensis MR-1. 16 samples. Type: Expression profiling by array.
Regulation of Gene Expression During Electron Acceptor Limitation and Bacterial Nanowire Formation in Shewanella oneidensis MR-1
GEO Series GSE79964. Shewanella oneidensis. 16 samples. Type: Expression profiling by high throughput sequencing.
Transcript map of Shewanella oneidensis MR-1
GEO Series GSE39468. Shewanella oneidensis MR-1. 2 samples. Type: Expression profiling by genome tiling array.
Identification of an ECF sigma factor that facilitates electroactive biofilm formation by Shewanella oneidensis MR-1: Experiment 2
GEO Series GSE142642. Shewanella oneidensis; Shewanella oneidensis MR-1. 8 samples. Type: Expression profiling by array.
Transcriptional targets of Shewanella oneidensis HnoC (SO_2540)
GEO Series GSE44689. Shewanella oneidensis MR-1. 8 samples. Type: Expression profiling by array.
Response in Shewanella oneidensis MR-1 and so2426 deletion mutant to Hexavalent Chromium over a 24 hour period
GEO Series GSE12129. Shewanella oneidensis MR-1. 6 samples. Type: Expression profiling by array.
Supplementation with amino acid sources facilitates fermentative growth of Shewanella oneidensis MR-1 in defined media
GEO Series GSE220284. Shewanella oneidensis MR-1; Shewanella oneidensis. 8 samples. Type: Expression profiling by array.
Overexpression of the adenylate cyclase gene cyaC facilitates current generation by Shewanella oneidensis in bioelectrochemical systems
GEO Series GSE129679. Shewanella oneidensis MR-1; Shewanella oneidensis. 8 samples. Type: Expression profiling by array.
Identification of an ECF sigma factor that facilitates electroactive biofilm formation by Shewanella oneidensis MR-1: Experiment 1
GEO Series GSE142641. Shewanella oneidensis; Shewanella oneidensis MR-1. 8 samples. Type: Expression profiling by array.
Engineered cell elongation promotes extracellular electron transfer of Shewanella oneidensis
GEO Series GSE244261. Shewanella oneidensis MR-1. 12 samples. Type: Expression profiling by high throughput sequencing.
dRNA-seq of Shewanella oneidensis MR-1
GEO Series GSE58292. Shewanella oneidensis MR-1. 4 samples. Type: Expression profiling by high throughput sequencing.
Elevated intracellular cyclic-di-GMP level in Shewanella oneidensis increases expression of c-type cytochromes
GEO Series GSE138586. Shewanella oneidensis. 12 samples. Type: Expression profiling by high throughput sequencing.
Transcriptome analysis applied to survival of Shewanella oneidensis MR-1 exposed to ionizing radiation
GEO Series GSE3876. Shewanella oneidensis MR-1. 20 samples. Type: Expression profiling by array.
Comparison of gene expression and mutant fitness in Shewanella oneidensis MR-1
GEO Series GSE39462. Shewanella oneidensis MR-1. 36 samples. Type: Expression profiling by array.
Transcript map of Shewanella oneidensis MR-1
GEO Series GSE45217. Shewanella oneidensis MR-1. 5 samples. Type: Expression profiling by genome tiling array.
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