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Related Concept Videos

Affinity Chromatography01:03

Affinity Chromatography

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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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Immunoprecipitation, or IP, is a widely used technique that employs protein-antibody interactions to isolate proteins or protein complexes in their native state for studying protein-protein interactions, quaternary structures, or supramolecular complexes. Various modifications of the technique, including chromatin IP, cross-linking IP, and fluorescence IP, are commonly used.
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The stability and compatibility of column material with samples are crucial for efficient purification in chromatographic techniques. Various operating parameters such as pH, temperature, or solvent affect the packing of the column material, thereby determining the purification efficiency. The choice of column material also plays an essential role in deciding the operating parameters and can be modified based on the proteins that need to be purified.
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Isolation and Characterization Of Chimeric Human Fc-expressing Proteins Using Protein A Membrane Adsorbers And A Streamlined Workflow
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Immunoaffinity Chromatography for Protein Purification and Analysis.

Sadia Sharmeen1, Kyungah Suh1, Isaac Kyei1

  • 1Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska.

Current Protocols
|August 23, 2023
PubMed
Summary
This summary is machine-generated.

Immunoaffinity chromatography (IAC) offers selective protein purification and analysis using antibody-based separation. This method provides protocols for both off-line and on-line immunoextraction, enhancing biochemical research.

Keywords:
antibodieschromatographic immunoassayimmunoaffinity chromatographyimmunoextractionprotein purification

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Area of Science:

  • Biochemistry
  • Analytical Chemistry
  • Chromatography

Background:

  • Immunoaffinity chromatography (IAC) utilizes immobilized antibodies for highly selective separation.
  • Antibodies' strong binding properties make IAC valuable for purifying and analyzing diverse molecules, especially proteins.
  • IAC is a key technique in biochemical purification and analysis.

Purpose of the Study:

  • To describe the fundamental principles of immunoaffinity chromatography for protein purification and analysis.
  • To present key factors and strategies for developing new IAC methods.
  • To provide practical protocols for various IAC applications, including off-line and on-line immunoextraction and chromatographic immunoassays.

Main Methods:

  • Utilizing immobilized antibodies as selective stationary phases in liquid chromatography.
  • Developing and applying protocols for off-line immunoextraction using traditional supports (e.g., agarose).
  • Implementing protocols for on-line immunoextraction with high-performance IAC supports.
  • Describing competitive binding assay formats for flow-based or chromatographic immunoassays.

Main Results:

  • Demonstrated IAC protocols using human serum albumin (HSA) as a model protein.
  • Illustrated successful application of IAC in both traditional low-performance and high-performance formats.
  • Showcased the utility of IAC for protein analysis via chromatographic immunoassays.

Conclusions:

  • Immunoaffinity chromatography is a versatile and powerful technique for protein purification and analysis.
  • The provided protocols offer practical guidance for implementing IAC in various research settings.
  • IAC facilitates both off-line and on-line immunoextraction and advanced chromatographic immunoassays.