The flavin reductase ActVB from Streptomyces coelicolor: characterization of the electron transferase activity of the flavoprotein form [PDF]
FEBS Letters, Elsevier, 2005, 579, pp.2817-20, 2015 The flavin reductase ActVB is involved in the last step of actinorhodin biosynthesis in Streptomyces coelicolor. Although ActVB can be isolated with some FMN bound, this form was not involved in the flavin reductase activity. By studying the ferric reductase activity of ActVB, we show that its FMN-bound form exhibits a proper enzymatic activity of ...
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The Relationship Between Groundwater Nitrate Pollution and Crime in United States: Nitrate-Crime Hypothesis [PDF]
arXiv, 2023 Groundwater is a crucial source of drinking water, but it is often contaminated with water-soluble pollutants that can pose significant health risks. Among these pollutants, nitrate has been extensively studied and found to be harmful to human health in high concentrations.
arxiv
Does nitrate deposition following astrophysical ionizing radiation events pose an additional threat to amphibians? [PDF]
Astrobiology, vol. 8, no. 4, 2008, 2008 It is known that amphibians are especially susceptible to the combination of heightened UVB radiation and increased nitrate concentrations. Various astrophysical events have been suggested as sources of ionizing radiation that could pose a threat to life on Earth, through destruction of the ozone layer and subsequent increase in UVB, followed by ...
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The NAD(P)H:flavin oxidoreductase from Escherichia coli. Evidence for a new mode of binding for reduced pyridine nucleotides [PDF]
The 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.
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The stability of 3 transmembrane and 4 transmembrane human vitamin K epoxide reductase models [PDF]
, 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.
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Calcium Rubidium Nitrate: Mode-Coupling $β$ Scaling without Factorization [PDF]
Phys. Rev. E 64, 021303 (2001), 2001 The fast dynamics of viscous calcium rubidium nitrate is investigated by depolarized light scattering, neutron scattering and dielectric loss. Fast $\beta$ relaxation evolves as in calcium potassium nitrate. The dynamic susceptibilities can be described by the asymptotic scaling law of mode-coupling theory with a shape parameter $\lambda = 0.79$; the ...
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Comment on "Atmospheric ionization by high-fluence, hard spectrum solar proton events and their probable appearance in the ice core archive" by A.L. Melott et al [PDF]
, 2016 Melott et al. [2016] suggest that individual solar proton events (SPEs) are detectable as nitrate ion spikes in ice cores. They use the high fluence, high energy (hard spectrum) SPE of 23 February 1956 to calculate an enhancement of HNO3 from the surface to 46 km that is equivalent to a ~120 ng cm-2 nitrate ion spike observed in the GISP2H ice core ...
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On the influence of molecular structure on the conductivity of electrolyte solutions - sodium nitrate in water [PDF]
Condens. Matter Phys., 2013, vol. 16, No. 4, 43006:1-12, 2013 Theoretical calculations of the conductivity of sodium nitrate in water are presented and compared with experimental measurements. The method of direct correlation force in the framework of the interionic theory is used for the calculation of transport properties in connection with the associative mean spherical approximation (AMSA).
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Does thiosemicarbazide lead nitrate (TSLN) crystal exist? [PDF]
, 2016 The authors of a recent paper (Optik 125 (2014) 2022-2025) claim to have grown a so called thiosemicarbazide lead nitrate (TSLN) crystal by the slow evaporation method. In this comment we prove that TSLN is actually thiosemicarbazide.
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Plasma-fixated nitrogen as fertilizer for turf grass [PDF]
arXiv, 2021 We investigated the use of plasma-fixated nitrogen, which produces nitrates (NO3-) in water, as a possible nitrogen fertilizer for recreational turf such as ryegrass and bentgrass. Experiments were carried out to study the effects of nitrate concentration on growth, the further effects of adding phosphorous (P) and potassium (K) to the plasma nitrated ...
arxiv