Results 21 to 30 of about 197,339 (252)

Homeostasis of metals in the progression of Alzheimer’s disease [PDF]

open access: yesBioMetals, 2014
In order to study the involvement of metals in the progression of Alzheimer's disease, serum samples from patients with Alzheimer and mild cognitive impairment were investigated. For this purpose, metal content was analyzed after size-fractionation of species and then, inter-element and inter-fraction ratios were computed.
González Domínguez, Raúl   +2 more
openaire   +3 more sources

Identification of metallophores and organic ligands in the chemosphere of the marine macroalga Ulva (Chlorophyta) and at land-sea interfaces

open access: yesFrontiers in Marine Science, 2016
The roles of organic matter in seawater have often been discussed from the aspect of metal toxicity and bioavailability in seawater. In fact, organic ligands, as part of the organic matter, can work as a trace metal ion buffer system.
Thomas Wichard
doaj   +1 more source

TRANSITION METAL TRANSPORT IN PLANTS AND ASSOCIATED ENDOSYMBIONTS: ARBUSCULAR MYCORRHIZAL FUNGI AND RHIZOBIA

open access: yesFrontiers in Plant Science, 2016
Transition metals such as iron, copper, zinc, or molybdenum, are essential nutrients for plants. These elements are involved in almost every biological process, including photosynthesis, tolerance to biotic and abiotic stress, or symbiotic nitrogen ...
Manuel González-Guerrero   +3 more
doaj   +1 more source

DOENÇA DE ALZHEIMER: HIPÓTESES ETIOLÓGICAS E PERSPECTIVAS DE TRATAMENTO

open access: yesQuímica Nova, 2016
With the increase in life expectancy registered in the past few decades, the prevalence of various medical conditions related to aging has been observed, such as dementia and related neurodegenerative conditions.
Anna De Falco   +3 more
doaj   +1 more source

Metal ion transporters and homeostasis [PDF]

open access: yesThe EMBO Journal, 1999
Transition metals are essential for many metabolic processes and their homeostasis is crucial for life. Aberrations in the cellular metal ion concentrations may lead to cell death and severe diseases. Metal ion transporters play a major role in maintaining the correct concentrations of the various metal ions in the different cellular compartments ...
openaire   +2 more sources

Autophagy: A role in metal ion homeostasis? [PDF]

open access: yesAutophagy, 2008
Nutrient limitation is one of the most common forms of stress encountered by microorganisms in the environment. Surviving this stress depends upon a number of integrated responses, one of the most important of which is autophagy. When the filamentous fungus Aspergillus fumigatus becomes nutrient deprived it undergoes two important processes: the ...
Daryl L, Richie, David S, Askew
openaire   +2 more sources

Metals in Cyanobacteria: Analysis of the Copper, Nickel, Cobalt and Arsenic Homeostasis Mechanisms

open access: yesLife, 2014
Traces of metal are required for fundamental biochemical processes, such as photosynthesis and respiration. Cyanobacteria metal homeostasis acquires an important role because the photosynthetic machinery imposes a high demand for metals, making them a ...
María José Huertas   +4 more
doaj   +1 more source

Efficient Overproduction of Active Nitrile Hydratase by Coupling Expression Induction and Enzyme Maturation via Programming a Controllable Cobalt-Responsive Gene Circuit

open access: yesFrontiers in Bioengineering and Biotechnology, 2020
A robust and portable expression system is of great importance in enzyme production, metabolic engineering, and synthetic biology, which maximizes the performance of the engineered system.
Laichuang Han   +9 more
doaj   +1 more source

Lysosome-related Organelles as Mediators of Metal Homeostasis [PDF]

open access: yesJournal of Biological Chemistry, 2014
Metal ion assimilation is essential for all forms of life. However, organisms must properly control the availability of these nutrients within the cell to avoid inactivating proteins by mismetallation. To safeguard against an imbalance between supply and demand in eukaryotes, intracellular compartments contain metal transporters that load and unload ...
Blaby-Haas, Crysten E   +1 more
openaire   +4 more sources

Cadmium and Copper Cross-Tolerance. Cu+ Alleviates Cd2 + Toxicity, and Both Cations Target Heme and Chlorophyll Biosynthesis Pathway in Rubrivivax gelatinosus

open access: yesFrontiers in Microbiology, 2020
Cadmium, although not redox active is highly toxic. Yet, the underlying mechanisms driving toxicity are still to be characterized. In this study, we took advantage of the purple bacterium Rubrivivax gelatinosus strain with defective Cd2 +-efflux system ...
Anne Soisig Steunou   +6 more
doaj   +1 more source

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