Results 41 to 50 of about 493 (147)

Enumeration of Organohalide Respirers in Municipal Wastewater Anaerobic Digesters [PDF]

Microbiology Insights, 2015
Organohalide contaminants such as triclosan and triclocarban have been well documented in municipal wastewater treatment plants (WWTPs), but the degradation of these contaminants is not well understood. One possible removal mechanism is organohalide respiration by which bacteria reduce the halogenated compound.
Smith, Bryan JK, Boothe, Melissa A, Fiddler, Brice A, Lozano, Tania M, Rahi, Russel K, Krzmarzick, Mark J   +5 more
openaire   +2 more sources

Presence, Diversity, and Enrichment of Respiratory Reductive Dehalogenase and Non-respiratory Hydrolytic and Oxidative Dehalogenase Genes in Terrestrial Environments

Frontiers in Microbiology, 2019
Organohalide-respiring bacteria have been linked to the cycling and possible respiration of chlorinated natural organic matter (Cl-NOM) in uncontaminated soils and sediments. The importance of non-respiratory hydrolytic/oxidative dechlorination processes
Hanna R. Temme, Aaron Carlson, Paige J. Novak   +2 more
doaj   +1 more source

Organohalide respiration in pristine environments: implications for the natural halogen cycle [PDF]

Environmental Microbiology, 2017
Summary Halogenated organic compounds, also termed organohalogens, were initially considered to be of almost exclusively anthropogenic origin. However, over 5000 naturally synthesized organohalogens are known today. This has also fuelled the hypothesis that the natural and ancient origin of organohalogens could have primed development
Atashgahi, Siavash, Häggblom, Max M., Smidt, Hauke   +2 more
openaire   +2 more sources

Catabolic Reductive Dehalogenase Substrate Complex Structures Underpin Rational Repurposing of Substrate Scope

Microorganisms, 2020
Reductive dehalogenases are responsible for the reductive cleavage of carbon-halogen bonds during organohalide respiration. A variety of mechanisms have been proposed for these cobalamin and [4Fe-4S] containing enzymes, including organocobalt, radical ...
Tom Halliwell, Karl Fisher, Karl A. P. Payne, Stephen E. J. Rigby, David Leys   +4 more
doaj   +1 more source

Linking NrfD/PsrC‐like architecture to energy conservation: Functional residues in the quinone reactive QrcABCD complex of sulfate‐reducing bacteria

Protein Science, Volume 35, Issue 5, May 2026.
Abstract The QrcABCD quinone reductase complex is an electrogenic complex present in sulfate‐reducing bacteria of the Desulfobacterota phylum. It operates as a cytochrome c3:menaquinone oxidoreductase involved in electron transfer from periplasmic hydrogen or formate oxidation to the menaquinone (MK) pool.
Gonçalo Manteigas, Teresa Catarino, João B. Vicente, Américo G. Duarte, Inês A. C. Pereira   +4 more
wiley   +1 more source

Microbial Community Response of an Organohalide Respiring Enrichment Culture to Permanganate Oxidation. [PDF]

PLoS ONE, 2015
While in situ chemical oxidation is often used to remediate tetrachloroethene (PCE) contaminated locations, very little is known about its influence on microbial composition and organohalide respiration (OHR) activity.
Nora B Sutton, Siavash Atashgahi, Edoardo Saccenti, Tim Grotenhuis, Hauke Smidt, Huub H M Rijnaarts   +5 more
doaj   +1 more source

Proteome adaptations of the organohalide-respiring Desulfitobacterium hafniense strain DCB-2 to various energy metabolisms

Frontiers in Microbiology, 2023
IntroductionDesulfitobacterium hafniense was isolated for its ability to use organohalogens as terminal electron acceptors via organohalide respiration (OHR). In contrast to obligate OHR bacteria, Desulfitobacterium spp.
Mathilde Stéphanie Willemin, Romain Hamelin, Florence Armand, Christof Holliger, Julien Maillard   +4 more
doaj   +1 more source

Biomarkers’ Responses to Reductive Dechlorination Rates and Oxygen Stress in Bioaugmentation Culture KB-1TM

Microorganisms, 2018
Using mRNA transcript levels for key functional enzymes as proxies for the organohalide respiration (OHR) rate, is a promising approach for monitoring bioremediation populations in situ at chlorinated solvent-contaminated field sites.
Gretchen L. W. Heavner, Cresten B. Mansfeldt, Garrett E. Debs, Sage T. Hellerstedt, Annette R. Rowe, Ruth E. Richardson   +5 more
doaj   +1 more source

Human Intestinal Microbiota Composition Shapes Model Polyfluoroalkyl Substance Biotransformation

ChemBioChem, Volume 27, Issue 5, 13 March 2026.
Differences in the human gut microbiome impact the rate and pathway of biotransformation for 6:2 polyfluoroalkyl phosphate diester (diPAP), a model polyfluoroalkyl substance. Metabolic analysis is coupled to 16S RNA analysis to identify correlations between microbial taxa abundance and PAP transformation products not previously established from ...
Sierra T. Peskett, Daniel S. Grégoire, Amy A. Rand   +2 more
wiley   +1 more source

Effect of Moderate Heat on TCE Reductive Dechlorination Rates in Groundwater

Groundwater Monitoring &Remediation, Volume 46, Issue 2, Page 44-54, Spring 2026.
Abstract Low‐temperature heating (in the mesophilic range of ~15 to 40 °C) of contaminated aquifers offers the prospect of increasing the rates for biotic and abiotic treatment of volatile organic compounds. Thermal In Situ Sustainable Remediation (TISR®) is one of the approaches available to implement low temperature heating.
David L. Freedman, Nicholas Cotter, Craig Divine, Shandra Justicia‐Leone   +3 more
wiley   +1 more source