Results 81 to 90 of about 292,870 (340)
A haloarchaeal ferredoxin electron donor that plays an essential role in nitrate assimilation [PDF]
, 2011 In the absence of ammonium, many organisms, including the halophilic archaeon Haloferax volcanii DS2 (DM3757), may assimilate inorganic nitrogen from nitrate or nitrite, using a ferredoxin-dependent assimilatory NO3-/NO2- reductase pathway.
Bonete, Maria José +5 more
core +1 more source
Characterization of a Nitrite Reductase Involved in Nitrifier Denitrification*
Journal of Biological Chemistry, 2013 Background: Copper nitrite reductases convert nitrite to nitric oxide in microorganisms. Results: The copper nitrite reductase from an ammonia oxidizing bacterium is unusually oxygen tolerant and has several unique structural features.
T. Lawton +4 more
semanticscholar +1 more source
Advanced Materials Interfaces, EarlyView.This study investigates the impact of nanostructured surface modification on corrosion resistance, HUVEC functions, and platelet interactions of 316L SS for cardiovascular stents. Nanostructured surfaces enhanced HUVEC proliferation, migration, and angiogenesis‐related gene expression while reducing platelet adhesion and hemolysis.
Yasar Kemal Erdogan +2 more
wiley +1 more source
Non-toxic total nitrogen determination using a low alkaline persulfate digestion
MethodsX, 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
Protein complex formation during denitrification by Pseudomonas aeruginosa
Microbial Biotechnology, 2017 Summary The most efficient means of generating cellular energy is through aerobic respiration. Under anaerobic conditions, several prokaryotes can replace oxygen by nitrate as final electron acceptor.
José Manuel Borrero‐de Acuña +3 more
doaj +1 more source
Pulse radiolysis studies on superoxide reductase from Treponema pallidum [PDF]
FEBS Letters, Elsevier, 2001, 497, pp.171-3, 2015 Superoxide reductases (SORs) are small metalloenzymes, which catalyze reduction of O2*- to H2O2. The reaction of the enzyme from Treponema pallidum with superoxide was studied by pulse radiolysis methods. The first step is an extremely fast bi-molecular reaction of the ferrous center with O2, with a rate constant of 6 x 10 (8) M(-1) s(-1).
arxiv +1 more source
The existence and significance of a mitochondrial nitrite reductase
Redox Report, 2005 The physiological functions of nitric oxide (NO) are well established. The finding that the endothelium-derived relaxing factor (EDRF) is NO was totally unexpected. It was shown that NO is a reaction product of an enzymatically catalyzed, overall, 5-electron oxidation of guanidinium nitrogen from L-arginine followed by the release of the free radical ...
Andrey V. Kozlov +2 more
openaire +3 more sources
Journal of Bacteriology, 2013 Mycobacterium tuberculosis is one of the strongest reducers of nitrate among all mycobacteria. Reduction of nitrate to nitrite, mediated by nitrate reductase (NarGHJI) of M.
S. Akhtar +4 more
semanticscholar +1 more source
Advanced Science, EarlyView.Traditional Chinese Medicine (TCM), while holistic and historically esteemed, faces challenges in “miracle cures” due to slow onset, long cycles, and difficulty controlling quality. This study obtains the active ingredients, glabridin (GLA) and puerarin (PUE), from Ge‐Gen Decoction (GGD), developing a safe and effective drug delivery system, GLA‐PUE ...
Jianhong Qi +7 more
wiley +1 more source
Molecular Plant-Microbe Interactions, 2010 Nitric oxide (NO) has gained interest as a major signaling molecule during plant development and in response to environmental cues. Formation of NO during symbiotic interactions has been reported, but the role and sources of NO in nodules remain unclear.
Cristina Sánchez +7 more
doaj +1 more source