Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 116 for “"Hydrophobic interactions"”.
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Structural Studies of Scallop Abductin, a Compressible Elastomer that Translates Hydrophobic Interactions to Elasticity
<p>Abductin is a natural elastomer found as the major component of the elastic hinge ligament in marine scallops. Until now, very little was known about the structure and function of this compressible elastomer. Biochemical studies of a synthetic 25 amino acid peptide of abductin produces fibers …
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A new approach to predictive modelling of flow of hydrophobically associating polyacrylamide polymers in porous media.
… of viscous thickening arising from associative interactions of the polymer molecules. Consequently, sustaining this beneficial effect of associative interactions remains an active area of research. In this work, a novel predictive approach was developed for quantitative mapping of the various …
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Silica Based Solid Phase Extraction Sorbent with a Removable Alkyltrimethylammonium Surfactant Phase
… exchange resin. The surfactant chain through hydrophobic interactions extracts hydrophobic analytes in the same manner as conventional bonded alkyl moieties on silica based non-polar sorbents. For the extraction of very hydrophobic species with conventional sorbents, solvents used for analyte …
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Application of Functional Amyloids in Morphological Control and in Self-assembled Composites
… interdigitation of methyl groups but more random hydrophobic interactions. The concentration dependence of the morphology is shown as a kinetic effect where many polypeptides aggregate very quickly through hydrophobic interactions to produce globules while smaller populations of polypeptides …
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Pseudostationary Phase for Solid Phase Extraction
… exchange resin. The surfactant chain through hydrophobic interactions extracts hydrophobic analytes in the same manner as conventional bonded alkyl moieties on silica based non-polar sorbents. Although hydrophobic analytes can be efficiently trapped on commercially available non-polar sorbents …
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Extrusion performance and physicochemical characterization of texturized native and chemically modified whey proteins in carbohydrate-containing systems
… between the presence of disulfide bonds and hydrophobic interactions to form a properly texturized product from whey protein isolates was observed. Disulfide bonds contributed to the formation of hard, non cohesive products, whereas hydrophobic interactions resulted in brittle, less cohesive …
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INTERACTION BETWEEN PROTEINS OF PLANT ORIGIN AND WINE COMPONENTS: MOLECULAR-BASED CHOICE OF PROTEIN FINING AGENTS FOR ORGANOLEPTIC IMPROVEMENT
… The formation of covalent and non-covalent interactions (hydrogen bonds and hydrophobic interactions) between the protein matrix and wine polyphenolics is the basis of the flocculation and of the consequent clarification which results in an overall improvement of wine quality parameters …
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Active Insulin Analogs That Do Not Require Refrigeration
Due primarily to hydrophobic interactions between nonpolar amino acid residues, molecules of insulin tend to interact with each other and undergo fibrillation to form linear aggregates when partially unfolded. Formation of these insulin fibrils significantly decreases insulin stability and …
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Molecular specificity of substrate recognition and activation in cytochrome P-450(CAM)
… of noncovalent bonding. Hydrogen bonding and hydrophobic interactions have been implicated in binding and activation of hydrocarbon substrates by cytochrome P-450$\sb{\rm cam}$. The dependence of the reaction efficiency and specificity on the structural complementarity in the P-450$\sb{\rm …
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Mesoscopic modeling of protein conformational changes
… the peptide backbone and of the specificity of hydrophobic interactions. These two features are found essential to give a realistic phase diagram of a coiled-coil peptide without producing spurious hydrophobically collapsed ""molten-globule"" states. The model is simple enough to allow the …
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Exploring the molecular architecture of proteins: Method developments in structure prediction and design
… protein folding remain at the level of simple hydrophobic interactions packing side-chain at the core of the protein. Furthermore, because the rate of genome sequencing is far more rapid than protein structure characterization, much more needs to be achieved in the field of structural biology. …
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Solution properties of some gaseous hydrocarbons in water-alkanol mixtures
… discussed here but with particular reference to hydrophobic interactions in the solution.<br/><br/>It is shown that the extent of these interactions can be observed in the isotherms of ΔH and ΔS at low concentrations of alcohol and a numerical method was used to estimate the magnitude of the …
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Structural basis for sulfatide recognition by Disabled-2
… to interact with the acyl chain through hydrophobic interactions rather than direct binding to the charged sulfatide head group. Lysine residues in this region are suggested to exert a dual role in sulfatide association, that is, by favoring electrostatic interactions with the …
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Pathogen Membrane Interactions
… with lipid membranes through electrostatic and hydrophobic interactions. Natural antimicrobial peptides and their synthetic derivatives are amphipathic molecules with broad-spectrum antimicrobial activity, but the underlying mechanism needs clarification. We systematically investigated …
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Surface Modification Of Exhausted Activated Carbon For The Enhanced Removal Of Per- And Polyfluoroalkyl Substances
… on the carbon through electrostatic and hydrophobic interactions. As GAC and many micropollutants treated by GAC, including the regulated PFAS, are negative, performing surface modification using a positive chemical increases the removal capacity of the carbon. Bench-scale tests using …
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Surface Forces in Thin Liquid Films of H-Bonding Liquids Confined between Hydrophobic Surfaces
Hydrophobic interaction plays an important role in biology, daily lives, and a variety of industrial processes such as flotation. While the mechanisms of hydrophobic interactions at molecular scale, as in self-assembly and micellization, is relatively well understood, the mechanisms of macroscopic …
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The Effects of Nonionic Surfactants on the Tris(2,2'-Bipyridl) Ruthenium(Ii)-Tripropylamine Electrochemiluminescence System
… state. These results are consistent with the hydrophobic interactions between Ru(bpy)₃²⁺ and the nonionic surfactants. There was no observable change in the fluorescence of Ru(bpy)₃²⁺ in the presence of nonionic surfactants.
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Mechanisms of Adenovirus Membrane Permeabilization
… Critical to this interaction are conserved hydrophobic and basic lysine residues within this domain. Membrane disruption can occur by two different mechanisms: transmembrane pore formation or membrane fragmentation. Our studies indicate that protein VI fragments membranes by inducing …
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Effect of de novo peptide properties on self-assembling large amyloid fibers
… perspective. The effect of glutamine content and hydrophobicity of template peptides on amyloid aggregation of a template-peptide system involving myoglobin was studied at near-physiological conditions by Fourier transform infrared spectroscopy, atomic force microscopy, field emission scanning …
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