Results 61 to 70 of about 6,046 (231)
, 2019 Orange filamentous Beggiatoaceae form massive microbial mats on hydrothermal sediments in Guaymas Basin; these bacteria are considered to oxidize sulfide with nitrate and nitrite as electron acceptors.
Andrew Buckley (6526667) +2 more
core +1 more source
British Journal of Clinical Pharmacology, EarlyView.Acutely lowering salivary pH (with sugar‐containing acidic gum vs. sugar‐free gum) augments salivary nitrate reduction to nitrite, plasma nitrite concentration, and blood pressure lowering with dietary nitrate. Modifying salivary pH reveals a mechanism by which the nitrate‐nitrite‐NO pathway may be upregulated/inhibited, with potential for other ...
Andrew J. Webb +7 more
wiley +1 more source
Frontiers in Physiology, 2017 Nitric oxide (NO) generated from nitrite through nitrite reductase activity in red blood cells has been proposed to play a major role in hypoxic vasodilation.
Donald G. Buerk +4 more
doaj +1 more source
Frontiers in Microbiology, 2020 Haloferax mediterranei (R4) belongs to the group of halophilic archaea, one of the predominant microbial populations in hypersaline environments. In these ecosystems, the low availability of oxygen pushes the microbial inhabitants toward anaerobic ...
Javier Torregrosa-Crespo +3 more
doaj +1 more source
In Silico Analysis of the Enzymes Involved in Haloarchaeal Denitrification
Biomolecules, 2021 During the last century, anthropogenic activities such as fertilization have led to an increase in pollution in many ecosystems by nitrogen compounds. Consequently, researchers aim to reduce nitrogen pollutants following different strategies.
Eric Bernabeu +5 more
doaj +1 more source
Frontiers in Microbiology, 2022 Heavy metals are essential micronutrients at low concentrations, serving as cofactors for relevant microbial enzymes (i.e., respiratory nitrate and nitrite reductases NADH dehydrogenase-2, amine oxidase, etc.), but they become harmful cellular ...
Marina García Llorca +2 more
doaj +1 more source
The Role of Iron‐Hyponitrite Intermediates in Biology and Insights From Synthetic Model Complexes
Chemistry – A European Journal, EarlyView.Despite the difference in active site architecture, NO reduction by different NOR enzymes is expected to be linked by a common intermediate: hyponitrite (N2O22−). However, experimentally, very little is known about the coordination chemistry of iron with hyponitrite and the expected Fe‐hyponitrite intermediates.
Michael O. Lengel, Nicolai Lehnert
wiley +1 more source
Exploring the Denitrification Proteome of Paracoccus denitrificans PD1222
Frontiers in Microbiology, 2018 Denitrification is a respiratory process that produces nitrous oxide as an intermediate, which may escape to the atmosphere before its reduction to dinitrogen through the nitrous oxide reductase NosZ. In this work, the denitrification process carried out
Alfonso Olaya-Abril +7 more
doaj +1 more source
Indirect Antioxidant Effects of the Nitrite Anion: Focus on Xanthine Oxidase
Advances in Redox Research, 2023 One electron reduction of nitrite (NO2−) has been determined to be a significant, noncanonical source of nitric oxide (NO) with molybdopterin enzymes being identified as critical to this process. Of the molybdopterin enzymes identified as NO2− reductases,
Xena M. Williams +5 more
doaj +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 ...
Hans, Nohl +2 more
openaire +2 more sources