Related Experiment Video
Updated: Jun 20, 2026
07:58
Highly Sensitive and Quantitative Detection of Proteins and Their Isoforms by Capillary Isoelectric Focusing Method
Published on: September 19, 2018
Fully automated two-dimensional electrophoresis system for high-throughput protein analysis
Atsunori Hiratsuka1, Kenji Yokoyama
1Research Center of Advanced Bionics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan.
Methods in Molecular Biology (Clifton, N.J.)
|September 1, 2009
Summary
A new automated two-dimensional electrophoresis (2DE) system offers rapid and reproducible protein analysis. This automated system, combining isoelectric focusing (IEF) and SDS-PAGE, significantly reduces analysis time to 1.5 hours.
Area of Science:
- Biochemistry
- Proteomics
- Analytical Chemistry
Background:
- Two-dimensional electrophoresis (2DE) is a cornerstone technique for protein expression analysis.
- Traditional 2DE methods are often time-consuming and labor-intensive.
- Reproducibility can be a challenge in manual 2DE protocols.
Purpose of the Study:
- To describe a fully automated two-dimensional electrophoresis (2DE) system.
- To demonstrate rapid and reproducible protein analysis using the automated system.
- To detail the device configuration, operational procedure, and data analysis.
Main Methods:
- Development of a fully automated 2DE system integrating isoelectric focusing (IEF) and sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE).
- Automation of all operational and transferring procedures.
- Streamlined workflow for enhanced efficiency.
Main Results:
- The automated 2DE system successfully performed protein analysis.
- The entire 2DE process was completed within 1.5 hours.
- High reproducibility in protein expression analysis was achieved.
Conclusions:
- The described automated 2DE system provides a significant advancement for rapid and reproducible protein analysis.
- This technology can streamline proteomics research and protein expression studies.
- The system offers a practical solution for efficient protein separation and characterization.
Related Concept Videos
01:22Two-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...
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...
01:27SDS-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...
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...
01:20Electrophoresis: 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...
There...
01:20Capillary 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...
01:30Capillary 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,...
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...