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Acta Physiologica Congress

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Acta Physiologica 2010; Volume 198, Supplement 677
Joint Meeting of the Scandinavian and German Physiological Societies
3/27/2010-3/30/2010
Copenhagen, Denmark


ADAPTIVE PLATFORM FOR HIGHLY PARALLEL LOW-NOISE RECORDINGS OF SINGLE MEMBRANE PROTEINS
Abstract number: P-SUN-69

BAAKEN1 G, DONDAPATI1 SK, RUHE1 J, BEHRENDS1 JC

Highly parallel, low noise electrophysiological recordings of single ion channels are of interest both for basic research and drug development. Here, a microsystems approach is presented which greatly simplifies the recording configuration and optimizes the electrical parameters governing noise. The lipid bilayer is formed on a picoliter cavity generated within a photochemical resist acting as a dielectric (see Fig. 1B). On the bottom of each cavity a microelectrode is placed.Using standard photolithographical techniques this design allows for many such setups on one chip, and is therefore in principle well suited for highly parallel single channel recordings. Parallel recordings (16-electrode multiarray) of currents mediated by alamethicin have been obtained, illustrating the potential of this novel approach towards high-throughput measurements of single membrane proteins. Furthermore, the flexibility of this approach is outlined by the reconstitution of a-hemolysin in the lipid bilayer. The capability for molecular analysis is demonstrated by the detection of oligomers diffusing through the bacterial pores.

To cite this abstract, please use the following information:
Acta Physiologica 2010; Volume 198, Supplement 677 :P-SUN-69

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