Results 21 to 30 of about 579,869 (390)

Migraines Are Correlated with Higher Levels of Nitrate-, Nitrite-, and Nitric Oxide-Reducing Oral Microbes in the American Gut Project Cohort. [PDF]

open access: yes, 2016
Nitrates, such as cardiac therapeutics and food additives, are common headache triggers, with nitric oxide playing an important role. Facultative anaerobic bacteria in the oral cavity may contribute migraine-triggering levels of nitric oxide through the ...
Antonio Gonzalez   +6 more
core   +5 more sources

Nitrate Reductase mRNA Regulation in Nicotiana plumbaginifolia Nitrate Reductase-Deficient Mutants [PDF]

open access: yesThe Plant Cell, 1989
Light and substrate regulation of nitrate reductase (NR) expression were compared in wild type and mutant lines of Nicotiana plumbaginifolia. Mutants affected in the NR structural gene (nia) or in the biosynthesis of the NR molybdenum cofactor (cnx) were examined.
Pouteau, Sylvie   +3 more
openaire   +3 more sources

Non-toxic total nitrogen determination using a low alkaline persulfate digestion

open access: yesMethodsX, 2020
Measuring total nitrogen, nitrate, and nitrite is critical for compliance with water safety standards. Previous methods for measuring total nitrogen were hazardous, time consuming, and expensive.
Jacob L. Studt   +5 more
doaj   +1 more source

Responses of soil N-cycle enzyme activities to vegetation degradation in a wet meadow on the Qinghai-Tibet Plateau

open access: yesFrontiers in Ecology and Evolution, 2023
Soil enzymes play a vital role in the functioning of wetland ecosystems, driving energy flow and material cycling processes. Gahai wet meadow, one of the important components of alpine wetlands on the Qinghai-Tibet Plateau, has suffered serious ...
Wenhua Chang   +6 more
doaj   +1 more source

Comparative studies on the soluble and plasma membrane associated nitrate reductase from Cucumis sativus L.

open access: yesActa Societatis Botanicorum Poloniae, 2014
The biochemical comparison between two forms of nitrate reductase from cucumber roots: the soluble enzyme and the plasma membrane-associated one was made. Soluble nitrate reductase was purified on the blue-Sepharose 4B.
Grażyna Kłobus   +2 more
doaj   +1 more source

Structure and evolution of chlorate reduction composite transposons. [PDF]

open access: yes, 2013
UnlabelledThe genes for chlorate reduction in six bacterial strains were analyzed in order to gain insight into the metabolism. A newly isolated chlorate-reducing bacterium (Shewanella algae ACDC) and three previously isolated strains (Ideonella ...
Clark, Iain C   +3 more
core   +2 more sources

The nitric oxide response in plant-associated endosymbiotic bacteria [PDF]

open access: yes, 2011
Nitric oxide (NO) is a gaseous signalling molecule which becomes very toxic due to its ability to react with multiple cellular targets in biological systems. Bacterial cells protect against NO through the expression of enzymes that detoxify this molecule
Andrew J. Gates   +57 more
core   +1 more source

Bacterial nitrate assimilation: gene distribution and regulation [PDF]

open access: yes, 2011
In the context of the global nitrogen cycle, the importance of inorganic nitrate for the nutrition and growth of marine and freshwater autotrophic phytoplankton has long been recognized.
Andrew J. Gates   +44 more
core   +1 more source

Transposon and deletion mutagenesis of genes involved in perchlorate reduction in Azospira suillum PS. [PDF]

open access: yes, 2013
UnlabelledAlthough much work on the biochemistry of the key enzymes of bacterial perchlorate reduction, chlorite dismutase, and perchlorate reductase has been published, understanding of the molecular mechanisms of this metabolism has been somewhat ...
Clark, Iain C   +3 more
core   +2 more sources

Pseudomonas chloritidismutans sp. nov., a non-denitrifying chlorate-reducing bacterium [PDF]

open access: yes, 2002
A Gram-negative, facultatively anaerobic, rod-shaped, dissimilatory chlorate-reducing bacterium, strain AW-1(T), was isolated from biomass of an anaerobic chlorate-reducing bioreactor.
Jonker, A.B.   +3 more
core   +3 more sources

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