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The solid phase in affinity chromatography: strategies for antibody attachment
1Immunology Laboratory, E. Katzir Biotechnology Program, Research Institute, College of Judea and Samaria, P.O. Box 3, Ariel, 44837, Israel.
Journal of Biochemical and Biophysical Methods
|November 6, 2001
Summary
Antibodies (Ab) are crucial for affinity chromatography (AC) but immobilization can reduce their effectiveness. Site-directed covalent coupling methods preserve antibody activity for better target molecule isolation.
Area of Science:
- Biochemistry
- Immunology
- Analytical Chemistry
Background:
- Antibodies (Ab) are widely utilized in affinity chromatography (AC) for isolating target molecules.
- Current immobilization methods risk compromising antibody functionality by coupling through critical antigen-binding sites.
- Alternative methods focus on Fc region coupling for optimal Fab site orientation.
Purpose of the Study:
- To review and compare various antibody immobilization techniques for affinity chromatography.
- To highlight methods that preserve antibody activity and specificity.
- To present protocols for site-directed covalent coupling of antibodies.
Main Methods:
- Discussion of different antibody immobilization strategies.
- Analysis of the advantages and disadvantages of each method.
- Outline of site-directed covalent coupling protocols.
Main Results:
- Chemical coupling can lead to loss of antibody function.
- Fc region coupling ensures proper orientation of antibody combining sites.
- Site-directed covalent coupling effectively retains antibody activity.
Conclusions:
- Site-directed covalent immobilization is superior for maintaining antibody function in AC.
- Optimized immobilization protocols are essential for efficient target molecule isolation.
- This review provides a guide to selecting and implementing effective antibody immobilization strategies.