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Isolation of Mesophilic Sulphate-Reducing Bacteria from a Microbial Community: Comparative Study of the Effect of pH and Dissolved Heavy Metals on the Reduction of Sulphate
(Trans Tech Publications, 2009-05)
Metallurgical processes and mining are the main source of heavy metal contamination of water sources, rivers and lakes. There are a large number of physicochemical processes that can be applied for the immobilization of ...
Influence of fluid flow in microbiological corrosion failures in oil field injector well tubing
(Pergamon-Elsevier Science Ltd, 2021-10)
Several API J55 steel tubings failed due to localized corrosion, after a year in service in water injector wells at an oil field. Microscopy observations, chemical analyses and computational fluid dynamic (CFD) numerical ...
Changes in metabolic pathways of Desulfovibrio alaskensis G20 cells induced by molybdate excess
(Springer, 2015-03)
The activity of sulfate-reducing bacteria (SRB) intensifies the problems associated to corrosion of metals and the solution entails significant economic costs. Although molybdate can be used to control the negative effects ...
TupA: A tungstate binding protein in the periplasm of Desulfovibrio alaskensis G20
(MDPI AG, 2014-07)
The TupABC system is involved in the cellular uptake of tungsten and belongs to the ABC (ATP binding cassette)-type transporter systems. The TupA component is a periplasmic protein that binds tungstate anions, which are ...
Highly selective tungstate transporter protein TupA from Desulfovibrio alaskensis G20
(Nature Publishing Group, 2017-12)
Molybdenum and tungsten are taken up by bacteria and archaea as their soluble oxyanions through high affinity transport systems belonging to the ATP-binding cassette (ABC) transporters. The component A (ModA/TupA) of these ...
Effects of molybdate and tungstate on expression levels and biochemical characteristics of formate dehydrogenases produced by Desulfovibrio alaskensis NCIMB 13491
(American Society for Microbiology, 2011-06)
Formate dehydrogenases (FDHs) are enzymes that catalyze the formate oxidation to carbon dioxide and that contain either Mo or W in a mononuclear form in the active site. In the present work, the influence of Mo and W salts ...
Enrichment and isolation of acid-tolerant sulfate-reducing microorganisms in the anoxic, acidic hot spring sediments from Copahue volcano, Argentina
(Wiley Blackwell Publishing, Inc, 2019-10)
The geothermal Copahue-Caviahue (GCC) system (Argentina) is an extreme acidic environment, dominated by the activity of Copahue volcano. Environments characterised by low pH values, such as volcanic areas, are of particular ...
Ruminal effects of excessive dietary sulphur in feedlot cattle
(Wiley, 2021-10-27)
Sulphur (S) dietary excess can limit productive performance and increase polioencephalomalacia (PEM) incidence in feedlot cattle (FC). Sulphur excess ingested is transformed to hydrogen sulphide (H2S) by sulfo-reducing ...
Immunobiotic Lactobacillus jensenii TL2937 Alleviates Dextran Sodium Sulfate-Induced Colitis by Differentially Modulating the Transcriptomic Response of Intestinal Epithelial Cells
(Frontiers Media S.A., 2020-09-17)
Immunobiotics have emerged as a promising intervention to alleviate intestinal damage in inflammatory bowel disease (IBD). However, the beneficial properties of immunobiotics are strain dependent and, therefore, each strain ...
Calcium carbonate precipitation in diatom-rich microbial mats: The Laguna Negra hypersaline lake, Catamarca, Argentina
(Society for Sedimentary Geology, 2018-06)
Carbonate microbialites provide a window to understand microbe-mineral interactions in modern environments and in the geological record. Unraveling microbial versus physicochemical controls and biogeochemical signatures ...