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Related Concept Videos

Capillary Electrophoresis: Applications01:30

Capillary Electrophoresis: Applications

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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,...
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Capillary Electrophoresis: Instrumentation01:20

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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...
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Electrophoresis: Overview01:20

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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...
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Affinity Chromatography01:03

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Affinity chromatography is a powerful technique extensively utilized for separating and purifying specific biomolecules from complex mixtures. It capitalizes on the highly selective binding between an analyte and its counterpart, such as antibody-antigen interactions. The counterpart is immobilized on the stationary phase, forming an affinity column. The stationary phase typically consists of solid support, such as agarose or porous glass beads, immobilizing the affinity ligand. The mobile...
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Related Experiment Video

Updated: Mar 22, 2026

2 in 1: One-step Affinity Purification for the Parallel Analysis of Protein-Protein and Protein-Metabolite Complexes
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CEval: All-in-one software for data processing and statistical evaluations in affinity capillary electrophoresis.

Pavel Dubský1, Magda Ördögová1, Michal Malý1

  • 1Charles University in Prague, Faculty of Science, Department of Physical and Macromolecular Chemistry, Prague, Czech Republic.

Journal of Chromatography. A
|April 11, 2016
PubMed
Summary

CEval software simplifies capillary electrophoresis data analysis, enabling automatic peak evaluation and complexation analysis. This tool enhances the study of analyte-selector interactions, including enantioseparations.

Keywords:
Affinity capillary electrophoresisComplexationCyclodextrinElectrophoretic mobilitySoftwareStatistical evaluation

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Area of Science:

  • Analytical Chemistry
  • Biophysical Chemistry

Background:

  • Capillary electrophoresis (CE) requires robust data processing for accurate analysis.
  • Evaluating electrophoregrams and determining binding constants can be time-consuming and complex.

Purpose of the Study:

  • Introduce CEval software for efficient electrophoregram evaluation and data processing in affinity CE.
  • Automate peak detection, parameter calculation, and nonlinear regression for binding studies.
  • Facilitate the analysis of analyte-selector complexation, including enantioseparations.

Main Methods:

  • Development of CEval software with automatic peak detection and parameter calculation.
  • Implementation of nonlinear regression using the Haarhoff-van der Linde (HVL) function for peak fitting.
  • Automated initial parameter guessing for HVL function and complexation constants (μA, μAS, K(')).
  • Statistical analysis including confidence intervals and hypothesis testing for estimated parameters.

Main Results:

  • CEval software enables automated peak evaluation and fitting using the HVL function.
  • Accurate estimation of analyte mobility (μA), complex mobility (μAS), and complexation constants (K(')) through nonlinear regression.
  • Demonstrated utility in analyzing the complexation of tryptophan methyl ester with neutral and charged cyclodextrins.
  • Facilitated simultaneous fitting for two complexation dependencies, beneficial for enantioseparations.

Conclusions:

  • CEval software significantly improves the speed and ease of electrophoregram analysis and affinity CE data processing.
  • The software provides robust statistical analysis of binding parameters, enabling hypothesis testing.
  • CEval is a valuable tool for researchers studying molecular interactions using capillary electrophoresis.