Methods for the estimation of binding constants by capillary electrophoresis

Area of Science:

• Analytical Chemistry
• Physical Chemistry

Background:

• Capillary electrophoresis (CE) is a powerful separation technique.
• Determining molecular association constants is crucial in various scientific fields.

Purpose of the Study:

• To review experimental, graphical, and mathematical approaches for determining apparent equilibrium constants using CE.
• To examine the advantages, limitations, and proper use of different CE methods for association analysis.

Main Methods:

• Review of established and emerging CE methodologies for binding studies.
• Analysis of the relationship between substrate concentration and electrophoretic mobility in CE.
• Comparison of CE approaches with analogous spectroscopic techniques.

Main Results:

• CE provides a robust platform for quantifying molecular interactions in solution.
• Various CE methods are conceptually and mathematically linked for association constant determination.
• Understanding the interplay between mobility and concentration is key to accurate analysis.

Conclusions:

• Capillary electrophoresis is a versatile tool for studying molecular associations with diverse analytes.
• The reviewed CE approaches offer valuable insights into binding phenomena.
• This work provides a guide for selecting and applying appropriate CE techniques for association studies.