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Related Concept Videos

Affinity Chromatography01:03

Affinity Chromatography

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...
Cooperative Allosteric Transitions01:58

Cooperative Allosteric Transitions

Cooperative allosteric transitions can occur in multimeric proteins, where each subunit of the protein has its own ligand-binding site. When a ligand binds to any of these subunits, it triggers a conformational change that affects the binding sites in the other subunits; this can change the affinity of the other sites for their respective ligands. The ability of the protein to change the shape of its binding site is attributed to the presence of a mix of flexible and stable segments in the...
Cooperative Allosteric Transitions01:58

Cooperative Allosteric Transitions

Cooperative allosteric transitions can occur in multimeric proteins, where each subunit of the protein has its own ligand-binding site. When a ligand binds to any of these subunits, it triggers a conformational change that affects the binding sites in the other subunits; this can change the affinity of the other sites for their respective ligands. The ability of the protein to change the shape of its binding site is attributed to the presence of a mix of flexible and stable segments in the...
The Equilibrium Binding Constant and Binding Strength02:18

The Equilibrium Binding Constant and Binding Strength

The equilibrium binding constant (Kb) quantifies the strength of a protein-ligand interaction. Kb can be calculated as follows when the reaction is at equilibrium:
The Equilibrium Binding Constant and Binding Strength02:18

The Equilibrium Binding Constant and Binding Strength

The equilibrium binding constant (Kb) quantifies the strength of a protein-ligand interaction. Kb can be calculated as follows when the reaction is at equilibrium:
Cooperative Binding of Transcription Regulators02:13

Cooperative Binding of Transcription Regulators

Transcriptional regulators bind to specific cis-regulatory sequences in the DNA to regulate gene transcription. These cis-regulatory sequences are very short, usually less than ten nucleotide pairs in length. The short length means that there is a high probability of the exact same sequence randomly occurring throughout the genome.  Since regulators can also bind to groups of similar sequences, this further increases the chances of random binding. Transcriptional regulators form dimers that...

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Related Experiment Video

Updated: Jul 4, 2026

Activated Cross-linked Agarose for the Rapid Development of Affinity Chromatography Resins - Antibody Capture as a Case Study
07:53

Activated Cross-linked Agarose for the Rapid Development of Affinity Chromatography Resins - Antibody Capture as a Case Study

Published on: August 16, 2019

Co-operative binding interactions in affinity chromatography: Theoretical considerations.

J Hubble1

  • 1Department of Chemical Engineering, University College of Swansea, Singleton Park, Swansea SA2 8PP.

Biotechnology and Bioengineering
|August 5, 1987
PubMed
Summary

This study introduces a model for affinity chromatography, showing how free ligand concentration impacts resin capacity with cooperative binding. Optimal conditions can significantly increase capacity and enable efficient biospecific elution using less ligand.

More Related Videos

Determination of High-affinity Antibody-antigen Binding Kinetics Using Four Biosensor Platforms
15:27

Determination of High-affinity Antibody-antigen Binding Kinetics Using Four Biosensor Platforms

Published on: April 17, 2017

Related Experiment Videos

Last Updated: Jul 4, 2026

Activated Cross-linked Agarose for the Rapid Development of Affinity Chromatography Resins - Antibody Capture as a Case Study
07:53

Activated Cross-linked Agarose for the Rapid Development of Affinity Chromatography Resins - Antibody Capture as a Case Study

Published on: August 16, 2019

Determination of High-affinity Antibody-antigen Binding Kinetics Using Four Biosensor Platforms
15:27

Determination of High-affinity Antibody-antigen Binding Kinetics Using Four Biosensor Platforms

Published on: April 17, 2017

Area of Science:

  • Biochemistry
  • Chemical Engineering
  • Chromatography

Background:

  • Affinity chromatography is crucial for protein purification.
  • Understanding ligand concentration effects is key to optimizing capacity.
  • Cooperative binding influences protein-ligand interactions.

Purpose of the Study:

  • To develop a theoretical model for affinity chromatography capacity.
  • To investigate the impact of free ligand concentration on protein adsorption.
  • To predict conditions for efficient biospecific elution.

Main Methods:

  • Theoretical relationship development.
  • Computer simulations using literature association constants.
  • Analysis of cooperative binding effects.

Main Results:

  • Resin capacity can be significantly increased with optimal free ligand concentration.
  • A finite concentration of free ligand enhances matrix capacity.
  • Model predicts soluble ligand concentrations for biospecific elution.

Conclusions:

  • The developed model provides insights into affinity chromatography optimization.
  • A novel elution technique, 'reverse biospecific elution,' is proposed.
  • This technique reduces the free ligand needed for elution.