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Capillary Electrophoresis: Applications

Capillary Electrophoresis: Applications

Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...

Electrophoresis: Overview

Electrophoresis: Overview

Electrophoresis is a powerful analytical separation technique that relies on the differential migration of charged species when subjected to an electric field. The core strength of electrophoresis lies in its ability to separate high-molecular-weight species in complex mixtures. It has found widespread use in biochemistry, molecular biology, and analytical chemistry, allowing the separation of compounds like amino acids, nucleotides, carbohydrates, and proteins with excellent resolution.
There...

Capillary Electrophoresis: Instrumentation

Capillary Electrophoresis: Instrumentation

Capillary electrophoresis instrumentation typically consists of several key components. A high-voltage power supply generates the electric field necessary for the separation by connecting to an anode (the positively charged electrode) and a cathode (the negatively charged electrode) located in buffer reservoirs at each end of the capillary tube. The system includes a sample vial, a fused silica capillary tube coated with polyimide for mechanical strength through which the sample components...

Two-dimensional Gel Electrophoresis

Two-dimensional Gel Electrophoresis

Two-dimensional gel electrophoresis is a high-resolution protein separation method first introduced by O' Farrell and Klose in 1975. This method involves protein separation by two dimensions, mass and charge, making it more accurate than one-dimensional gel electrophoresis.
The first dimension separation uses the isoelectric focusing or IEF technique performed on immobilized pH gradient (IPG) strips that separate proteins according to their isoelectric points.
Biological samples, such as cells...

SDS-PAGE

SDS-PAGE

Gel electrophoresis is a method that separates biological macromolecules like nucleic acids or proteins by forcing them to pass through a gel matrix under an electric field.
A variation of gel electrophoresis, termed polyacrylamide gel electrophoresis (PAGE), is commonly used for separating proteins according to their molecular size by passing them through a polyacrylamide gel. Because of the varying charges associated with amino acid side chains, PAGE can be used to separate intact proteins...

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Related Experiment Video

Updated: Jun 24, 2026

Sheathless Capillary Electrophoresis–Mass Spectrometry for Metabolic Profiling of Biological Samples

Sheathless Capillary Electrophoresis–Mass Spectrometry for Metabolic Profiling of Biological Samples

Published on: October 1, 2016

Capillary electrophoresis applied to proteomic analysis.

Bryan R Fonslow¹, John R Yates

¹Department of Chemical Physiology, The Scripps Research Institute, La Jolla, CA 92037, USA.

Journal of Separation Science

|April 11, 2009

Summary

Capillary electrophoresis (CE) coupled with mass spectrometry (MS) or laser-induced fluorescence (LIF) offers powerful proteomics capabilities. These CE-based methods advance cell and tissue analysis for biological and clinical research.

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Highly Sensitive and Quantitative Detection of Proteins and Their Isoforms by Capillary Isoelectric Focusing Method

Highly Sensitive and Quantitative Detection of Proteins and Their Isoforms by Capillary Isoelectric Focusing Method

Published on: September 19, 2018

Related Experiment Videos

Last Updated: Jun 24, 2026

Sheathless Capillary Electrophoresis–Mass Spectrometry for Metabolic Profiling of Biological Samples

Sheathless Capillary Electrophoresis–Mass Spectrometry for Metabolic Profiling of Biological Samples

Published on: October 1, 2016

Highly Sensitive and Quantitative Detection of Proteins and Their Isoforms by Capillary Isoelectric Focusing Method

Highly Sensitive and Quantitative Detection of Proteins and Their Isoforms by Capillary Isoelectric Focusing Method

Published on: September 19, 2018

Area of Science:

Proteomics
Analytical Chemistry
Cell Biology

Background:

The postgenomic era demands advanced techniques for analyzing complex cellular protein machinery.
Protein expression, modifications, and interactions are crucial for understanding cellular processes and diseases.
Effective separation and detection methods are essential for dissecting intricate biological networks.

Purpose of the Study:

To review established capillary electrophoresis (CE)-based methods for cell and tissue proteomics.
To highlight applications of CE in biological and clinical studies.
To discuss new technological developments, including microfluidic CE-MS, and the future of CE in proteomics.

Main Methods:

Capillary electrophoresis (CE) coupled with mass spectrometry (MS).
Capillary electrophoresis (CE) coupled with laser-induced fluorescence (LIF).
Microfluidic CE-MS systems for model systems.

Main Results:

CE-based techniques provide powerful separation and detection for proteomics.
These methods are applicable to cell and tissue level analyses.
New developments enhance the capability and application scope of CE in proteomics.

Conclusions:

CE coupled with MS or LIF are vital tools for modern proteomics.
These techniques facilitate a deeper understanding of biological processes and human diseases.
Continued technological advancements promise to expand the role of CE in future proteomic research.