Results 101 to 110 of about 292,870 (340)

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

open access: yes, 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

Discovery of superoxide reductase: an historical perspective [PDF]

open access: yesJournal of Biological Inorganic Chemistry, 2004, 9, pp.119-23, 2014
For more than 30 years, the only enzymatic system known to catalyze the elimination of superoxide was superoxide dismutase, SOD. SOD has been found in almost all organisms living in the presence of oxygen, including some anaerobic bacteria, supporting the notion that superoxide is a key and general component of oxidative stress. Recently, a new concept
arxiv   +1 more source

Designing a functional type 2 copper center that has nitrite reductase activity within α-helical coiled coils

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2012
One of the ultimate objectives of de novo protein design is to realize systems capable of catalyzing redox reactions on substrates. This goal is challenging as redox-active proteins require design considerations for both the reduced and oxidized states ...
M. Tegoni   +4 more
semanticscholar   +1 more source

Research Progress of Nitrite Metabolism in Fermented Meat Products

open access: yesFoods, 2023
Nitrite is a common color and flavor enhancer in fermented meat products, but its secondary amines may transfer to the carcinogen N-nitrosamines. This review focuses on the sources, degradation, limitations, and alteration techniques of nitrite.
Qiyuan Shen   +7 more
doaj   +1 more source

Sampling of conformational ensemble for virtual screening using molecular dynamics simulations and normal mode analysis [PDF]

open access: yesFuture Medicinal Chemistry, 2015, 7 (17), pp.2317-2331, 2016
Aim: Molecular dynamics simulations and normal mode analysis are well-established approaches to generate receptor conformational ensembles (RCEs) for ligand docking and virtual screening. Here, we report new fast molecular dynamics-based and normal mode analysis-based protocols combined with conformational pocket classifications to efficiently generate
arxiv   +1 more source

Exploring the Molecular Pathways Underlying the Anti‐Diabetic Effects of Millets

open access: yesFood Safety and Health, EarlyView.
Millet consumption may modulate gluconeogenesis and glycolysis, enhance glucose transporter activity, increase leptin levels, inhibit the NF‐κB pathway, and mitigate oxidative and nitrosative stress. ABSTRACT Diabetes mellitus (DM) is a metabolic disorder characterized by hyperglycemic conditions resulting from inadequate insulin production or ...
Akash Kumar   +5 more
wiley   +1 more source

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

Influence of oxidative stress produced by nitrite in the activity of methaemoglobin reductase in two different species of fish [PDF]

open access: yes, 2013
Nitrite induces the oxidation of the haemoglobin forming methaemoglobin, which is nonfunctional. To oppose this formation fishes have an enzyme that reverses the process called methaemoglobin reductase.
Aníbal, J., Bicho, M.
core  

Synthetic and Evolutionary Construction of a Chlorate-Reducing Shewanella oneidensis MR-1. [PDF]

open access: yes, 2015
UnlabelledDespite evidence for the prevalence of horizontal gene transfer of respiratory genes, little is known about how pathways functionally integrate within new hosts.
Carlson, Hans K   +5 more
core   +3 more sources

Direct Electrochemistry of Shewanella oneidensis Cytochrome c Nitrite Reductase

open access: yesBiochemistry, 2012
Shewanella oneidensis cytochrome c nitrite reductase (soNrfA) is a dimeric enzyme that plays a key role in bacterial nitrate respiration. The periplasmic reductase catalyzes the six‐electron reduction of nitrite to ammonia but can also catalyze the two ...
Evan T. Judd, S. Elliott
semanticscholar   +1 more source

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