Max Planck Institute for Dynamics and Self-Organization -- Department for Nonlinear Dynamics and Network Dynamics Group
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MPIDS Kolloquium/BCCN Kolloquium

Wednesday, 20.06.2007 17 c.t.

Light-gated ion channels and ion pumps as new tools in neuro- and cell biology

by Prof. Dr. Ernst Bamberg
from Max-Planck-Institut für Biophysik, Frankfurt

Contact person: Theo Geisel



Microbial Rhodopsins have been shown in the past to act as primary photoreceptors for phototactic reactions as well as light-driven ion pumps for energy transduction. Recently we were able to show that microbial rhodopsins from Chlamydomonas reinhardtii with the 7 transmembrane helix motif act as light-gated ion channels. The functional description of this new class of ion channels (electrophysiology, noise analysis and flash photolysis) is given. Together with the light driven Cl- pump Halorhodopsin these unique channels represent an excellent tool for the non-invasive manipulation of cells and living animals especially in the field of neurobiological research.

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