Results 51 to 60 of about 50,424 (297)

Isoform-Specific NO Synthesis by Arabidopsis thaliana Nitrate Reductase

open access: yesPlants, 2019
Nitrate reductase (NR) is important for higher land plants, as it catalyzes the rate-limiting step in the nitrate assimilation pathway, the two-electron reduction of nitrate to nitrite.
Marie Agatha Mohn   +2 more
doaj   +1 more source

Opportunities for mesoporous nanocrystalline SnO2 electrodes in kinetic and catalytic analyses of redox proteins [PDF]

open access: yes, 2009
PFV (protein film voltammetry) allows kinetic analysis of redox and coupled-chemical events. However, the voltammograms report on the electron transfer through a flow of electrical current such that simultaneous spectroscopy is required for chemical ...
Angove   +16 more
core   +1 more source

A haloarchaeal ferredoxin electron donor that plays an essential role in nitrate assimilation [PDF]

open access: yes, 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

The NAD(P)H:flavin oxidoreductase from Escherichia coli. Evidence for a new mode of binding for reduced pyridine nucleotides [PDF]

open access: yesThe journal of biological chemistry, American Society for Biochemistry and Molecular Biology, 1999, 274, pp.18252-60, 2015
The NAD(P)H:flavin oxidoreductase from Escherichia coli, named Fre, is a monomer of 26.2 kDa that catalyzes the reduction of free flavins using NADPH or NADH as electron donor. The enzyme does not contain any prosthetic group but accommodates both the reduced pyridine nucleotide and the flavin in a ternary complex prior to oxidoreduction.
arxiv   +1 more source

Cloning, sequencing, and characterization of the hexahydro-1,3,5-trinitro-1,3,5-triazine degradation gene cluster from Rhodococcus rhodochrous [PDF]

open access: yes, 2002
Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) is a high explosive which presents an environmental hazard as a major land and groundwater contaminant.
Basran, A   +6 more
core   +2 more sources

Metabolic network analysis reveals microbial community interactions in anammox granules. [PDF]

open access: yes, 2017
Microbial communities mediating anaerobic ammonium oxidation (anammox) represent one of the most energy-efficient environmental biotechnologies for nitrogen removal from wastewater.
Bhattacharjee, Ananda S   +6 more
core   +2 more sources

The key role of nitric oxide in hypoxia: hypoxic vasodilation and energy supply-demand matching [PDF]

open access: yes, 2013
Significance: a mismatch between energy supply and demand induces tissue hypoxia with the potential to cause cell death and organ failure. Whenever arterial oxygen concentration is reduced, increases in blood flow - 'hypoxic vasodilation' - occur in an ...
Alex Dyson   +23 more
core   +1 more source

Bringing Nitric Oxide to the Molybdenum World—A Personal Perspective

open access: yesMolecules, 2023
Molybdenum-containing enzymes of the xanthine oxidase (XO) family are well known to catalyse oxygen atom transfer reactions, with the great majority of the characterised enzymes catalysing the insertion of an oxygen atom into the substrate. Although some
Luisa B. Maia
doaj   +1 more source

The stability of 3 transmembrane and 4 transmembrane human vitamin K epoxide reductase models [PDF]

open access: yes, 2016
3 transmembrane and 4 transmembrane helices models are suggested for the human vitamin K epoxide reductase (VKOR). In this study, we investigate the stability of the human 3 transmembrane/4 transmembrane VKOR models employing a coarse-grained normal mode analysis and molecular dynamics simulation.
arxiv   +1 more source

Molecular dynamics simulation of the order-disorder phase transition in solid NaNO$_2$ [PDF]

open access: yesPhysical Review B 68, 174106 (2003), 2003
We present molecular dynamics simulations of solid NaNO$_2$ using pair potentials with the rigid-ion model. The crystal potential surface is calculated by using an \emph{a priori} method which integrates the \emph{ab initio} calculations with the Gordon-Kim electron gas theory.
arxiv   +1 more source

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