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Membrane Transport Processes Analyzed by a Highly Parallel Nanopore Chip System at Single Protein Resolution

Membrane Transport Processes Analyzed by a Highly Parallel Nanopore Chip System at Single Protein Resolution

Published on: August 16, 2016

Nanopore-based single-molecule mass spectrometry on a lipid membrane microarray.

Gerhard Baaken¹, Norbert Ankri, Anne-Katrin Schuler

¹Laboratory for Electrophysiology and Biotechnology, Department of Physiology, University of Freiburg, Hermann-Herder-Strasse 7, 79104 Freiburg, Germany.

|September 22, 2011

Summary

This summary is machine-generated.

We developed a chip-based nanopore microarray for high-resolution single-molecule analysis. This microelectrode cavity array (MECA) device enables high-throughput, precise mass spectrometry of molecules.

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Lipid Droplet Isolation for Quantitative Mass Spectrometry Analysis

Lipid Droplet Isolation for Quantitative Mass Spectrometry Analysis

Published on: April 17, 2017

Area of Science:

Biophysics
Analytical Chemistry
Nanotechnology

Background:

Single-molecule analysis offers high precision but often lacks throughput.
Nanopore technology provides a platform for single-molecule detection.
Existing methods for nanopore recordings can be labor-intensive and low-throughput.

Purpose of the Study:

To develop and demonstrate a chip-based nanopore microarray for parallel, high-resolution electrical single-molecule analysis.
To evaluate the performance of the microelectrode cavity array (MECA) device for molecular mass spectrometry.
To assess the potential of MECA for high-throughput nanopore applications.

Main Methods:

Formation of lipid bilayers with single alpha-hemolysin pores on subpicoliter cavities with microelectrodes (MECA).
Ion conductance-based single-molecule mass spectrometry of poly(ethylene glycol) mixtures.
Parallel electrical recordings on a nanopore microarray.

Main Results:

Demonstrated successful parallel high-resolution electrical single-molecule analysis using the MECA device.
Achieved single-molecule mass spectrometry resolution comparable to established single microbilayer supports.
Validated the MECA platform as a chip-based array for nanopore recordings.

Conclusions:

The MECA device functions as a high-throughput, chip-based platform for nanopore recordings.
MECA technology maintains or exceeds the precision of current state-of-the-art microbilayer recordings.
MECA devices may facilitate broader analytical applications of nanopores due to their array format and ease of operation.