Results 141 to 150 of about 292,870 (340)

Allosteric communication in Dihydrofolate Reductase: Signaling network and pathways for closed to occluded transition and back [PDF]

arXiv, 2007
E. Coli. dihydrofolate reductase (DHFR) undergoes conformational transitions between the closed (CS) and occluded (OS) states which, respectively, describe whether the active site is closed or occluded by the Met20 loop. A sequence-based approach is used to identify a network of residues that represents the allostery wiring diagram.
arxiv  

Sensing Nitrite through a Pseudoazurin–Nitrite Reductase Electron Transfer Relay

ChemPhysChem, 2005
AbstractNitrite is converted to nitric oxide by haem or copper‐containing enzymes in denitrifying bacteria during the process of denitrification. In designing an efficient biosensor, this enzymic turnover must be quantitatively assessed. The enzyme nitrite reductase from Alcaligenes faecalis contains a redox‐active blue copper centre and a nonblue ...
Astier, Y., Canters, G.W., Davis, J.J., Hill, H.A.O., Verbeet, M.P., Wijma, H.J.   +5 more
openaire   +4 more sources

The detection of the nitrite reductase and NO-generating properties of haemoglobin by mitochondrial inhibition.

Cardiovascular Research, 2011
AIMS Nitrite (NO₂⁻), now regarded as an endocrine reserve of nitric oxide (NO), is bioactivated by nitrite reductase enzymes to mediate physiological responses.
S. Shiva, T. Rassaf, R. Patel, M. Gladwin   +3 more
semanticscholar   +1 more source

Nitrate ammonification by Nautilia profundicola AmH: experimental evidence consistent with a free hydroxylamine intermediate.

Frontiers in Microbiology, 2013
The process of nitrate reduction via nitrite controls the fate and bioavailability of mineral nitrogen within ecosystems; i.e. whether it is retained as ammonium (ammonification) or lost as nitrous oxide or dinitrogen (denitrification). Here, we present
Thomas E Hanson, Thomas E Hanson, Thomas E Hanson, Barbara J Campbell, Katie M. Kalis, Mark A. Campbell, Martin G Klotz   +6 more
doaj   +1 more source

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

, 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, Goel, Ramesh, Hamilton, Joshua J, Lawson, Christopher E, McMahon, Katherine D, Noguera, Daniel R, Wu, Sha   +6 more
core   +2 more sources

Surface modified sulfur nanoparticles can escape the glutathione reductase mediated detoxification system in fungi [PDF]

arXiv, 2015
The antifungal effects of orthorhombic (~10 nm; spherical) and monoclinic (~50 nm; tetrapod) sulfur nanoparticles (SNPs) were studied against the NADPH-dependent glutathione reductase (GR) mediated xenobiotic detoxification system (GSH-GSSG) in filamentous fungi (Aspergillus niger as a model organism).
arxiv  

Implications for soluble iron accumulation, oxidative stress, and glial glutamate release in motor neuron death associated with sporadic amyotrophic lateral sclerosis

Neuropathology, EarlyView.
Oxidative stress in sporadic amyotrophic lateral sclerosis (ALS) has been evidenced by accumulation of oxidatively modified products of nucleic acids, lipids, sugars, and proteins in the motor neuron system of brains and spinal cords obtained at autopsy from the patients.
Noriyuki Shibata, Ikuko Kataoka, Yukinori Okamura, Kumiko Murakami, Yoichiro Kato, Tomoko Yamamoto, Kenta Masui   +6 more
wiley   +1 more source

Technological activities of Staphylococcus carnosus and Staphylococcus simulans strains isolated from fermented sausages [PDF]

, 2005
The aim of this study was to determine the technological properties of 2 strains of Staphylococcus simulans (Ssm12, Ssm21) and 4 strains of S. carnosus (SC28, SC31, SC54 and SC55) for the selection of a potential starter cultures to employ in the ...
BLAIOTTA, GIUSEPPE, CASABURI, A., MAURIELLO, GIANLUIGI, PEPE, OLIMPIA, VILLANI, FRANCESCO   +4 more
core   +1 more source

A Nexafs Study of Nitric Oxide Layers Adsorbed from a nitrite Solution onto a Pt(111) Surface [PDF]

arXiv, 2008
NO molecules adsorbed on a Pt(111) surface from dipping in an acidic nitrite solution are studied by near edge X-ray absorption fine structure spectroscopy (NEXAFS), X-ray photoelectron spectroscopy (XPS), low energy electron diffraction (LEED) and scanning tunnelling microscopy (STM) techniques.
arxiv  

Dietary nitrate supplementation mitigates age‐related changes at the neuromuscular junction in mice

The Journal of Physiology, EarlyView.
Abstract figure legend Ageing is associated with a decline in muscle mass and strength, namely sarcopenia, significantly impacting the quality of life in older individuals. Different strategies are being explored to counteract these detrimental effects. In the present study, we investigated a non‐invasive nutritional approach: the impact of 2 months of
Maira Rossi, Lucrezia Zuccarelli, Lorenza Brocca, Cristiana Sazzi, Clarissa Gissi, Paola Rossi, Bruno Grassi, Simone Porcelli, Roberto Bottinelli, Maria Antonietta Pellegrino   +9 more
wiley   +1 more source