Results 31 to 40 of about 13,465 (259)

Bioaugmentation of UASB reactors with immobilized Sulfurospirillum barnesii for simultaneous selenate and nitrate removal [PDF]

, 2009
Whole-cell immobilization of selenate-respiring Sulfurospirillum barnesii in polyacrylamide gels was investigated to allow the treatment of selenate contaminated (790¿µg Se¿×¿L-1) synthetic wastewater with a high molar excess of nitrate (1,500 times) and
Aelst, A.C., van, Enright, A.M., Lens, P.N.L., Lenz, M., O’Flaherty, V.   +4 more
core   +2 more sources

Rhizobium etli Produces Nitrous Oxide by Coupling the Assimilatory and Denitrification Pathways

Frontiers in Microbiology, 2019
More than two-thirds of the powerful greenhouse gas nitrous oxide (N2O) emissions from soils can be attributed to microbial denitrification and nitrification processes.
Alba Hidalgo-García, María J. Torres, Ana Salas, Eulogio J. Bedmar, Lourdes Girard, María J. Delgado   +5 more
doaj   +1 more source

Cloning, sequencing, and characterization of the hexahydro-1,3,5-trinitro-1,3,5-triazine degradation gene cluster from Rhodococcus rhodochrous [PDF]

, 2002
Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) is a high explosive which presents an environmental hazard as a major land and groundwater contaminant.
Basran, A, Bruce, N C, Dabbs, E R, Nicklin, S, Rosser, S J, Seth-Smith, H M B, Travis, E R   +6 more
core   +2 more sources

The relationship between redox enzyme activity and electrochemical potential—cellular and mechanistic implications from protein film electrochemistry [PDF]

, 2011
In protein film electrochemistry a redox protein of interest is studied as an electroactive film adsorbed on an electrode surface. For redox enzymes this configuration allows quantification of the relationship between catalytic activity and ...
Ackrell, Anderson, Anderson, Andrew G. Mayes, Andrew J. Gates, Angove, Armstrong, Armstrong, Armstrong, Armstrong, Armstrong, Arnoux, Bamford, Bekker, Berks, Blumberger, Blumberger, Buc, Butler, Butler, Chun Yip To, Clarke, Costa, David J. Richardson, Davis, de Vries, Dementin, Dias, Dridge, Eddowes, Ellington, Elliott, Field, Flores, Fourmond, Fourmond, Fourmond, Frangioni, Frew, Gates, Gates, Gemma L. Kemp, Georgellis, Gwyer, Hagedoorn, Hanson, Healy, Heering, Hirst, Hofmann, Hunte, Immoos, Ivanov, James Mann, Jepson, Jepson, Jeuken, Julea N. Butt, Kell, Kemp, Lin, Léger, Léger, Léger, Marritt, Marsili, Moore, Murgida, Niki, Otten, Otten, Page, Pershad, Potter, Ramirez, Richardson, Ridnour, Sears, Sears, Simons, Sophie J. Marritt, Sun, Tenderholt, Tenderholt, Thauer, Tipmanee, Wang, Westerhoff, Yeh, Zuman   +89 more
core   +1 more source

Genetic and environmental controls on nitrous oxide accumulation in lakes. [PDF]

PLoS ONE, 2015
We studied potential links between environmental factors, nitrous oxide (N2O) accumulation, and genetic indicators of nitrite and N2O reducing bacteria in 12 boreal lakes.
Jatta Saarenheimo, Antti J Rissanen, Lauri Arvola, Hannu Nykänen, Moritz F Lehmann, Marja Tiirola   +5 more
doaj   +1 more source

Trace metal requirements for microbial enzymes involved in the production and consumption of methane and nitrous oxide [PDF]

, 2012
Fluxes of greenhouse gases to the atmosphere are heavily influenced by microbiological activity. Microbial enzymes involved in the production and consumption of greenhouse gases often contain metal cofactors.
Glass, Jennifer B., Orphan, Victoria J.
core   +3 more sources

The key role of nitric oxide in hypoxia: hypoxic vasodilation and energy supply-demand matching [PDF]

, 2013
Significance: a mismatch between energy supply and demand induces tissue hypoxia with the potential to cause cell death and organ failure. Whenever arterial oxygen concentration is reduced, increases in blood flow - 'hypoxic vasodilation' - occur in an ...
Alex Dyson, Audibert G, Berne RM, Blitzer ML, Boutilier RG, Brown IP, Devlin C, Furukawa K, Hall JE, Heyes MP, Jekabsone A, Lehninger A, Leone AM, Louis CA, Martin Feelisch, Mervyn Singer, Michele Umbrello, Modin A, Munk VC, Pohl U, Rengasamy A, Rengasamy A, Vallance P, Whorton AR   +23 more
core   +1 more source

Nitrite Reductase Activity of Cytochrome c [PDF]

Journal of Biological Chemistry, 2008
Small increases in physiological nitrite concentrations have now been shown to mediate a number of biological responses, including hypoxic vasodilation, cytoprotection after ischemia/reperfusion, and regulation of gene and protein expression. Thus, while nitrite was until recently believed to be biologically inert, it is now recognized as a potentially
Swati, Basu, Natalia A, Azarova, Michael D, Font, S Bruce, King, Neil, Hogg, Mark T, Gladwin, Sruti, Shiva, Daniel B, Kim-Shapiro   +7 more
openaire   +2 more sources

Phyloecology of nitrate ammonifiers and their importance relative to denitrifiers in global terrestrial biomes

Nature Communications, 2023
Nitrate ammonification is important for soil nitrogen retention. However, the ecology of ammonifiers and their prevalence compared with denitrifiers, being competitors for nitrate, are overlooked.
Aurélien Saghaï, Grace Pold, Christopher M. Jones, Sara Hallin   +3 more
doaj   +1 more source

Nitrite Generating and Depleting Capacity of the Oral Microbiome and Cardiometabolic Risk: Results from ORIGINS

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2022
Background The enterosalivary nitrate–nitrite–nitric oxide (NO3–NO2–NO) pathway generates NO following oral microbiota‐mediated production of salivary nitrite, potentially linking the oral microbiota to reduced cardiometabolic risk.
Charlene E. Goh, Bruno Bohn, Clarisse Marotz, Rebecca Molinsky, Sumith Roy, Bruce J. Paster, Ching‐Yuan Chen, Michael Rosenbaum, Melana Yuzefpolskaya, Paolo C. Colombo, Moïse Desvarieux, Panos N. Papapanou, David R. Jacobs, Rob Knight, Ryan T. Demmer   +14 more
doaj   +1 more source