Topic
Water environment
About: Water environment is a research topic. Over the lifetime, 13384 publications have been published within this topic receiving 125138 citations.
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TL;DR: The use of monoclonal antibodies with defined epitopes, raised against native β-LG confirmed that the protein conformation was much more modified when glycation was performed in a solution while the structural changes induced during dry-way treatment were limited to the AB loop region of the protein.
Abstract: y Since temperature and water activity are among the most important parameters that affect the Maillard reaction, the glycation sites in pure, native bovine β-lactoglobulin were determined after a mild heat treatment (60°C) in an aqueous solution and after a treatment under a restricted water environment (50°C, 65% relative humidity). In both systems, the results obtained underlined the structural heterogeneity of β-lactoglobulin (β-LG) glycoforms with respect to the number of lactose residues linked per protein molecule and to the binding sites involved. Subsequently, the effect of the glycation conditions on both the association behaviour and the conformational changes of the glycated β-LG were characterised by proteolytic susceptibility, binding of the fluorescent probe 8-anilino-1-naphtalene-sulfonic acid, SDS-PAGE and size exclusion chromatography. The results showed that dry-way glycation did not significantly alter the native-like behaviour of the protein while the treatment in solution led to important structural changes. These changes resulted in a specific denatured β-LG monomer, which covalently associated via the free thiol group. The homodimers thus formed and the expanded monomers underwent subsequent aggregation to form high molecular weight species, via non-covalent interactions. The use of monoclonal antibodies with defined epitopes, raised against native β-LG. confirmed that the protein conformation was much more modified when glycation was performed in a solution while the structural changes induced during dry-way treatment were limited to the AB loop region of the protein.
71 citations
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TL;DR: A novel type of inorganic membranelike structure formed by the self-assembly of hydrophilic polyoxometalate macroanions, which creates a microscaled, relatively isolated water environment which possesses different properties from the bulk water.
Abstract: We report a novel type of inorganic membranelike structure formed by the self-assembly of hydrophilic polyoxometalate macroanions. Such nanoscaled, water-soluble macroions tend to form stable, uniform, single-layer “blackberry” structures (20−1000 nm in size) in dilute solutions via noncovalent bond interactions. Two interesting features of “Keplerate” {Mo72Fe30} blackberries are found from fluorescence studies: (1) They create a microscaled, relatively isolated water environment (containing over 3 million water molecules) which possesses different properties from the bulk water. (2) The blackberry membrane is permeable to small cations, but not to anions. The passive transport of cations across the blackberry membrane is relatively slow but does not need any carrier or additional energy.
71 citations
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TL;DR: The flexible recollection and high efficient sorption capacity made core-shell and yolk-shell Fe3O4@TNS nanosheets promising materials to eliminate U(VI) or other actinides in wastewater cleanup applications.
70 citations
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TL;DR: In this paper, Magnetospirillum gryphiswaldense MSR-1 was successfully used to reduce gold ions to a zero-valent metal in a water environment, and more importantly, to accumulate them into spherical nanoparticles on the cell surface through biosorption.
70 citations
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TL;DR: The folding of Ser-Tyr-Pro-Phe-Asp-Val, and sequence variants of this peptide are studied computationally in an explicit water environment and it is suggested that the process of peptide folding shares many of the features expected for the significantly larger protein molecules.
70 citations