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We synthesized a molecule composed of two angiotensin II 4-8 pentapeptide fragments attached to a carrier molecule (TA), according to the template-assembled synthetic proteins concept. This molecule was investigated for receptor binding on angiotensin type ...
In this work, the specific and nonspecific binding of proteins to planar surfaces was investigated. The surfaces were first modified by the spontaneous adsorption of a number of synthesized 1,2-diacyl-sn-glycero-3-phosphatidylcholine lipids with different ...
Ligand binding to the nicotinic acetylcholine receptor is studied by surface plasmon resonance. Biotinylated bungarotoxin, immobilized on a streptavidin-coated gold film, binds nicotinic acetylcholine receptor both in detergent-solubilized and in lipid ves ...
The efficient resolution of racemic N-Boc-7-azabicyclo[2.2.1]hept-5-en-2-one (+/-)-2 via aminal formation with (R,R)-1,2-diphenylethylenediamine 4 is reported. Acidic hydrolysis furnishes the enantiomeric ketones (+)-2 and (-)-2 that were transformed into ...
Agonist-specific cytosolic Ca2+ oscillation patterns can be observed in individual cells and these have been explained by the co-existence of separate oscillatory mechanisms. In pancreatic acinar cells activation of muscarinic receptors typically evokes si ...
The agonists acetylcholine (ACh) and cholecystokinin (CCK) evoke oscillating cytosolic Ca2+ signals in pancreatic acinar cells. Low agonist concentrations evoke local cytosolic Ca2+ spikes confined to the secretory pole region and intracellular inositol tr ...
High signal-to-noise Fourier transform IR (FTIR) spectra of the 5-hydroxytryptamine (serotonin) receptor (5-HT3R) and the nicotinic acetylcholine receptor (nAChR) were obtained by microscope FTIR spectroscopy using micrometer-sized, fully hydrated protein ...
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 ...
Application of acetylcholine to Xenopus oocytes evoked increases in the cytosolic free calcium ion concentration ([Ca2+]i) after latencies of up to several seconds depending on the agonist dose. Higher acetylcholine concentrations evoked responses with lar ...
G protein-coupled receptors (GPCRs) constitute a large class of seven transmembrane proteins, which bind selectively agonists or antagonists with important consequences for cellular signaling and function. Comprehension of the mol. details of ligand bindin ...
