Concept

Acétylcholine

Publications associées (49)

Enzyme-based choline and l-glutamate biosensor electrodes on silicon microprobe arrays

Nico de Rooij, Peter Van der Wal, Olivier Frey

Brain-implantable microprobe arrays, 6.5 mm shaft-length, incorporating several recessed Pt microelectrodes (50 mu m x 150 mu m) and an integrated Ag/AgCl reference electrode fabricated by silicon micromachining dry etching techniques (DRIE) are described. ...

Elsevier2010

Crystal structure of the extracellular domain of a bacterial ligand-gated ion channel

The crystal structure of the extracellular domain (ECD) of the pentameric ligand-gated ion-channel from Gloeobacter violaceus (GLIC) was solved at neutral pH at 2.3 A resolution in two crystal forms, showing a surprising hexameric quaternary structure with ...

Elsevier2009

Characterization of the 5HT3 receptor in live cells and in vitro

Veronica Ponce de Leon

The serotonin type 3 receptor (5HT3R) is a homopentameric, cation selective channel that mediates fast excitatory transmission in the nervous system. It is a member of the Cys-loop family of receptors that include the nicotinic acetylcholine receptor (nACh ...

EPFL2009

Proton NMR of15N-choline metabolites enhanced by dynamic nuclear polarization

Rolf Gruetter, Geoffrey Bodenhausen, Arnaud Comment, Sami Jannin, Paul Romeo Vasos, Riddhiman Sarkar

(Figure Presented) Chemical shifts of protons can report on metabolic transformations such as the conversion of choline to phosphocholine. To follow such processes in vivo, magnetization can be enhanced by dynamic nuclear polarization (DNP). We have hyperp ...

2009

Conformational dynamics of cationic cys-loop receptors

Davor Kosanic

Understanding the functional dynamics of ligand-gated ion-channels (LGIC's) on the molecular level is the aim of this thesis. Members of the protein family of LGIC's are involved in the fast synaptic signal transmission and thereby play a central role in i ...

EPFL2009

Quantitative proton spectroscopic imaging of the neurochemical profile in rat brain with microliter resolution at ultra-short echo times

Rolf Gruetter, Giulio Gambarota

Proton spectroscopy allows the simultaneous quantification of a high number of metabolite concentrations termed the neurochemical profile. The spin echo full intensity acquired localization (SPECIAL) scheme with an echo time of 2.7 ms was used at 9.4T for ...

Wiley-Blackwell2008

Modulation of proton-induced current fluctuations in the human nicotinic acetylcholine receptor channel

Horst Vogel, Rudolf Hovius, Christophe Danelon, Jörg Grandl

The nicotinic acetylcholine receptor (nAChR) is a ligand-gated ion channel that switches upon activation from a closed state to a full conducting state. We found that the mutation delta S268K, located at 12' position of the second transmembrane domain of t ...

2007

Functional asymmetry of transmembrane segments in nicotinic acetylcholine receptors

Horst Vogel, Rudolf Hovius, Christophe Danelon, Jörg Grandl

Nicotinic acetylcholine receptors are heteropentameric ion channels that open upon activation to a single conducting state. The second transmembrane segments of each subunit were identified as channel-forming elements, but their respective contribution in ...

2006

Electrophysiology and fluorescence microscopy of ligand-gated ion channels

Christoph Schreiter

The thesis presented here describes studies of ligand binding, function, and arrangement of ligand-gated ion channels in cell membranes. Fluorescence microscopy and the patch clamp technique are used to investigate the nicotinic acetylcholine receptor and ...

EPFL2005

Structure and function of the nicotinic acetylcholine receptor

Jörg Grandl

The subject of this thesis is the study of the structure and function of the human muscle nicotinic acetylcholine receptor (nAChR), which is a typical member of the large class of ligand-gated ion channels. Appropriate techniques, like site-directed mutage ...

EPFL2005

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