Ion-channel gating in transmembrane receptor proteins: functional activity in tethered lipid membranes
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We use rigorous diffraction theory to analyze the force on elliptical cylinders made from silver as a function of the elongation. We find that, when the wires are illuminated at the plasmon wavelength and placed in a highly focused Gaussian beam, they are ...
The invention relates to various embodiments of a bioanal. reagent with at least one vesicle, generated from a living cell, and at least one receptor for study of signal transduction. The invention further relates to methods for prodn. of said bioanal. rea ...
(Ecole Polytechnique Federale de Lausanne, Switz.; Zeptosens A.-G.).2002
Fluorescence Correlation Spectroscopy (FCS) is a suitable technique to investigate biomol. interactions. The advantage of FCS lies in its wide dynamic range in the time and concn. domain, its sensitivity, and thus in the small amt. of material needed. The ...
Gating of an artificial receptor was monitored for the first time by impedance spectroscopy in tethered lipid bilayer. Subnanomolar concns. of antibody were detected by modulation of the channel activity. The principle of gating by an antibody is particula ...
The ability of organisms, or individual cells to sense and to react to different external and internal stimuli (light, hormones, odorants, taste) is crucial for their survival. I will report on our recent progress to investigate mol. signal recognition and ...
The invention relates to a functionalized, polymer-reinforced (sterically stabilized) vesicle which comprises a biol., biochem. or synthetic identifying element for identifying and binding a ligand. In addn., the inventive vesicle optionally contains label ...
Sequential stages in the life cycle of the ionotropic 5-HT3 receptor (5-HT3R) were resolved temporally and spatially in live cells by multicolor fluorescence confocal microscopy. The insertion of the enhanced cyan fluorescent protein into the large intrace ...
The nicotinic acetylcholine receptor from Torpedo was immobilised in tethered membranes. Surface plasmon resonance was used to quantify the binding of ligands and antibodies to the receptor. The orientation and structural integrity of the surface-reconstit ...
We study numerically two-dimensional nanoparticles with a non-regular shape and demonstrate that these particles can support many more plasmon resonances than a particle with a regular shape (e.g. an ellipse). The electric field distributions associated wi ...
A method is presented to form gold-electrode-tethered lipid bilayers with exceptionally high elec. resistances. Elec. impedance spectroscopy is used to monitor the bilayer incorporation of a ligand-gated ion channel protein and the modulation of its channe ...