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A Tale of Two Oxidation States: Bacterial Colonization of Arsenic-Rich Environments
Microbial biotransformations have a major impact on contamination by toxic elements, which threatens public health in developing and industrial countries. Finding a means of preserving natural environments—including ground and surface waters—from arsenic constitutes a major challenge facing modern s...
Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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Formato: | Texto |
Lenguaje: | English |
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Public Library of Science
2007
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1851979/ https://www.ncbi.nlm.nih.gov/pubmed/17432936 http://dx.doi.org/10.1371/journal.pgen.0030053 |
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author | Muller, Daniel Médigue, Claudine Koechler, Sandrine Barbe, Valérie Barakat, Mohamed Talla, Emmanuel Bonnefoy, Violaine Krin, Evelyne Arsène-Ploetze, Florence Carapito, Christine Chandler, Michael Cournoyer, Benoît Cruveiller, Stéphane Dossat, Caroline Duval, Simon Heymann, Michael Leize, Emmanuelle Lieutaud, Aurélie Lièvremont, Didier Makita, Yuko Mangenot, Sophie Nitschke, Wolfgang Ortet, Philippe Perdrial, Nicolas Schoepp, Barbara Siguier, Patricia Simeonova, Diliana D Rouy, Zoé Segurens, Béatrice Turlin, Evelyne Vallenet, David Dorsselaer, Alain Van Weiss, Stéphanie Weissenbach, Jean Lett, Marie-Claire Danchin, Antoine Bertin, Philippe N |
author_facet | Muller, Daniel Médigue, Claudine Koechler, Sandrine Barbe, Valérie Barakat, Mohamed Talla, Emmanuel Bonnefoy, Violaine Krin, Evelyne Arsène-Ploetze, Florence Carapito, Christine Chandler, Michael Cournoyer, Benoît Cruveiller, Stéphane Dossat, Caroline Duval, Simon Heymann, Michael Leize, Emmanuelle Lieutaud, Aurélie Lièvremont, Didier Makita, Yuko Mangenot, Sophie Nitschke, Wolfgang Ortet, Philippe Perdrial, Nicolas Schoepp, Barbara Siguier, Patricia Simeonova, Diliana D Rouy, Zoé Segurens, Béatrice Turlin, Evelyne Vallenet, David Dorsselaer, Alain Van Weiss, Stéphanie Weissenbach, Jean Lett, Marie-Claire Danchin, Antoine Bertin, Philippe N |
author_sort | Muller, Daniel |
collection | PubMed |
description | Microbial biotransformations have a major impact on contamination by toxic elements, which threatens public health in developing and industrial countries. Finding a means of preserving natural environments—including ground and surface waters—from arsenic constitutes a major challenge facing modern society. Although this metalloid is ubiquitous on Earth, thus far no bacterium thriving in arsenic-contaminated environments has been fully characterized. In-depth exploration of the genome of the β-proteobacterium Herminiimonas arsenicoxydans with regard to physiology, genetics, and proteomics, revealed that it possesses heretofore unsuspected mechanisms for coping with arsenic. Aside from multiple biochemical processes such as arsenic oxidation, reduction, and efflux, H. arsenicoxydans also exhibits positive chemotaxis and motility towards arsenic and metalloid scavenging by exopolysaccharides. These observations demonstrate the existence of a novel strategy to efficiently colonize arsenic-rich environments, which extends beyond oxidoreduction reactions. Such a microbial mechanism of detoxification, which is possibly exploitable for bioremediation applications of contaminated sites, may have played a crucial role in the occupation of ancient ecological niches on earth. |
format | Text |
id | pubmed-1851979 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2007 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-18519792007-04-13 A Tale of Two Oxidation States: Bacterial Colonization of Arsenic-Rich Environments Muller, Daniel Médigue, Claudine Koechler, Sandrine Barbe, Valérie Barakat, Mohamed Talla, Emmanuel Bonnefoy, Violaine Krin, Evelyne Arsène-Ploetze, Florence Carapito, Christine Chandler, Michael Cournoyer, Benoît Cruveiller, Stéphane Dossat, Caroline Duval, Simon Heymann, Michael Leize, Emmanuelle Lieutaud, Aurélie Lièvremont, Didier Makita, Yuko Mangenot, Sophie Nitschke, Wolfgang Ortet, Philippe Perdrial, Nicolas Schoepp, Barbara Siguier, Patricia Simeonova, Diliana D Rouy, Zoé Segurens, Béatrice Turlin, Evelyne Vallenet, David Dorsselaer, Alain Van Weiss, Stéphanie Weissenbach, Jean Lett, Marie-Claire Danchin, Antoine Bertin, Philippe N PLoS Genet Research Article Microbial biotransformations have a major impact on contamination by toxic elements, which threatens public health in developing and industrial countries. Finding a means of preserving natural environments—including ground and surface waters—from arsenic constitutes a major challenge facing modern society. Although this metalloid is ubiquitous on Earth, thus far no bacterium thriving in arsenic-contaminated environments has been fully characterized. In-depth exploration of the genome of the β-proteobacterium Herminiimonas arsenicoxydans with regard to physiology, genetics, and proteomics, revealed that it possesses heretofore unsuspected mechanisms for coping with arsenic. Aside from multiple biochemical processes such as arsenic oxidation, reduction, and efflux, H. arsenicoxydans also exhibits positive chemotaxis and motility towards arsenic and metalloid scavenging by exopolysaccharides. These observations demonstrate the existence of a novel strategy to efficiently colonize arsenic-rich environments, which extends beyond oxidoreduction reactions. Such a microbial mechanism of detoxification, which is possibly exploitable for bioremediation applications of contaminated sites, may have played a crucial role in the occupation of ancient ecological niches on earth. Public Library of Science 2007-04 2007-04-13 /pmc/articles/PMC1851979/ /pubmed/17432936 http://dx.doi.org/10.1371/journal.pgen.0030053 Text en © 2007 Muller et al. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Muller, Daniel Médigue, Claudine Koechler, Sandrine Barbe, Valérie Barakat, Mohamed Talla, Emmanuel Bonnefoy, Violaine Krin, Evelyne Arsène-Ploetze, Florence Carapito, Christine Chandler, Michael Cournoyer, Benoît Cruveiller, Stéphane Dossat, Caroline Duval, Simon Heymann, Michael Leize, Emmanuelle Lieutaud, Aurélie Lièvremont, Didier Makita, Yuko Mangenot, Sophie Nitschke, Wolfgang Ortet, Philippe Perdrial, Nicolas Schoepp, Barbara Siguier, Patricia Simeonova, Diliana D Rouy, Zoé Segurens, Béatrice Turlin, Evelyne Vallenet, David Dorsselaer, Alain Van Weiss, Stéphanie Weissenbach, Jean Lett, Marie-Claire Danchin, Antoine Bertin, Philippe N A Tale of Two Oxidation States: Bacterial Colonization of Arsenic-Rich Environments |
title | A Tale of Two Oxidation States: Bacterial Colonization of Arsenic-Rich Environments |
title_full | A Tale of Two Oxidation States: Bacterial Colonization of Arsenic-Rich Environments |
title_fullStr | A Tale of Two Oxidation States: Bacterial Colonization of Arsenic-Rich Environments |
title_full_unstemmed | A Tale of Two Oxidation States: Bacterial Colonization of Arsenic-Rich Environments |
title_short | A Tale of Two Oxidation States: Bacterial Colonization of Arsenic-Rich Environments |
title_sort | tale of two oxidation states: bacterial colonization of arsenic-rich environments |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1851979/ https://www.ncbi.nlm.nih.gov/pubmed/17432936 http://dx.doi.org/10.1371/journal.pgen.0030053 |
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