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Automated Hydrophobic Interaction Chromatography Column Selection for Use in Protein Purification
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Entrapment of Proteins Within Columns for High-Performance Affinity Chromatography
Saumen Poddar1, Sadia Sharmeen1, David S Hage2
1Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, USA.
Methods in Molecular Biology (Clifton, N.J.)
|May 18, 2022
Summary
This study introduces an on-column entrapment method for immobilizing proteins onto silica supports for high-performance liquid chromatography (HPLC). This technique preserves protein activity and structure for advanced chromatographic applications.
Area of Science:
- Biochemistry
- Analytical Chemistry
- Materials Science
Background:
- Noncovalent immobilization techniques are crucial for preserving the activity of biological agents.
- Traditional methods may alter the structure of binding agents, limiting their applications.
- High-performance liquid chromatography (HPLC) requires stable and active immobilized biomolecules for effective separation.
Purpose of the Study:
- To describe a novel on-column entrapment method for immobilizing proteins.
- To detail the preparation of HPLC columns using this entrapment technique.
- To highlight the preservation of protein structure and activity during immobilization.
Main Methods:
- Utilizing a dihydrazide-activated silica support for protein entrapment.
- Employing oxidized glycogen as a capping agent to secure the protein within the support.
- Developing an on-column procedure for direct column preparation.
Main Results:
- Successful immobilization of proteins within the silica support in a soluble form.
- Demonstration of minimal to no loss of protein activity post-immobilization.
- Preparation of functional HPLC columns using the described on-column entrapment method.
Conclusions:
- The on-column entrapment method offers a robust approach for preparing protein-based HPLC columns.
- This technique effectively preserves protein integrity and function, suitable for various analytical applications.
- The described method provides a valuable tool for researchers in chromatography and biochemistry.
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