Results 91 to 100 of about 347,780 (327)

The localization of nitrite reductase, glutamate synthase and malate metabolism enzymes in Pisum arvense L. roots

open access: yesActa Societatis Botanicorum Poloniae, 2014
Centrifugation of a homogenate made from Pisum arvense L. roots in a sucrose density gradient enabled the separation of the plastid fraction from mitochondria and microsomes.
Genowefa Kubik-Dobosz, Grażyna Kłobus
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

De novo designed metallopeptides with type 2 copper centers: modulation of reduction potentials and nitrite reductase activities

open access: yesJournal of the American Chemical Society, 2013
Enzymatic reactions involving redox processes are highly sensitive to the local electrostatic environment. Despite considerable effort, the complex interactions between different influential factors in native proteins impede progress towards complete ...
Fangting Yu   +2 more
semanticscholar   +1 more source

Characterization of the active site and calcium binding in cytochromecnitrite reductases [PDF]

open access: yes, 2011
The decahaem homodimeric cytochrome c nitrite reductase (NrfA) is expressed within the periplasm of a wide range of Gamma-, Delta- and Epsilon-proteobacteria and is responsible for the six-electron reduction of nitrite to ammonia.
Butt, JN   +4 more
core   +1 more source

Subchronic Exposure to Arsenic and Nickel Triggers Nitrosative Stress and Histological Alterations in the Rat Liver

open access: yesJournal of Applied Toxicology, EarlyView.
ABSTRACT Environmental exposure to heavy metals poses a threat to human health. Several studies documented harmful effects on the liver after arsenic and nickel exposure at concentrations beyond permissible limits. Nevertheless, the impact of a simultaneous exposure to both elements on hepatic biochemistry and histology remains unelucidated. Therefore,
Thainá Iasbik‐Lima   +4 more
wiley   +1 more source

Polyethylene Glycol Camouflaged Earthworm Hemoglobin. [PDF]

open access: yes, 2017
Nearly 21 million components of blood and whole blood and transfused annually in the United States, while on average only 13.6 million units of blood are donated. As the demand for Red Blood Cells (RBCs) continues to increase due to the aging population,
Cabrales, Pedro   +8 more
core   +6 more sources

Evaluating two concepts for the modelling of intermediates accumulation during biological denitrification in wastewater treatment [PDF]

open access: yes, 2015
The accumulation of the denitrification intermediates in wastewater treatment systems is highly undesirable, since both nitrite and nitric oxide (NO) are known to be toxic to bacteria, and nitrous oxide (N2O) is a potent greenhouse gas and an ozone ...
Bing-Jie Ni   +25 more
core   +1 more source

Effect of ammonium concentration on methane oxidation and CO2 removal in an anaerobic biotrickling filter treating synthetic landfill gas and leachate

open access: yesJournal of Chemical Technology &Biotechnology, EarlyView.
Abstract BACKGROUND Landfill gas (LFG) and leachate are commonly treated separately through energy‐intensive processes. This study evaluated the integration of both streams in an anaerobic biotrickling filter (BTF) to achieve simultaneous methane (CH4) and carbon dioxide (CO2) removal coupled with ammonium (NH4+) transformation, and how the microbial ...
Cecilia Lizeth Alvarez‐Guzmán   +3 more
wiley   +1 more source

Orphan response regulator NnaR is critical for nitrate and nitrite assimilation in Mycobacterium abscessus

open access: yesFrontiers in Cellular and Infection Microbiology
Mycobacterium abscessus (Mab) is an opportunistic pathogen afflicting individuals with underlying lung disease such as Cystic Fibrosis (CF) or immunodeficiencies.
Breven S. Simcox, Kyle H. Rohde
doaj   +1 more source

Inappropriate Total Oxidant/Antioxidant Status, Nitric Oxide Oxidation End Products and Trace Element Levels in Patients with Inflammatory Bowel Disease [PDF]

open access: yesIranian Journal of Colorectal Research, 2018
Background: This study aimed at evaluating oxidant and antioxidant markers (including nitrite, nitrate, total antioxidant capacity(TAC), malondialdehyde (MDA), iron, selenium, glutathione peroxidase (GPx), and glutathione reductase (GR) in patients ...
Erfan Mohammadi   +3 more
doaj  

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