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Multiple fragment ligation on glass surface: a novel approach
1Department of Biophysics, Molecular Biology & Genetics, Calcutta University, India.
Indian Journal of Biochemistry & Biophysics
|April 1, 1994
Summary
DNA can bind to silicon dioxide and glass surfaces, enabling enzymatic reactions and transformations. This reversible DNA binding method offers potential for improved transformation efficiency, particularly with complex DNA mixtures.
Area of Science:
- Biochemistry
- Molecular Biology
- Materials Science
Background:
- DNA binding to surfaces is crucial for molecular biology techniques.
- Reversible DNA immobilization is desirable for various applications.
- Chaotropic agents disrupt DNA hydration shells, facilitating surface binding.
Purpose of the Study:
- To investigate the reversible binding of DNA to silicon dioxide and glass.
- To explore the utility of DNA-bound glass in molecular manipulations.
- To assess the potential for enhancing transformation efficiency using this method.
Main Methods:
- DNA was bound to pure silicon dioxide and powdered glass using chaotropic agents.
- The reversibility of DNA binding was tested using water and low ionic strength buffers.
- DNA bound to glass was subjected to restriction enzyme digestion, ligation, and bacterial transformation.
Main Results:
- DNA binding to silicon dioxide was easily reversible with water or low ionic strength buffers.
- DNA binding to powdered glass was less easily reversible compared to pure silicon dioxide.
- DNA immobilized on glass supported enzymatic digestion, ligation, and transformation.
Conclusions:
- Reversible DNA binding to silicon dioxide and glass is feasible.
- DNA-bound glass is a suitable matrix for enzymatic manipulations and transformation.
- This method holds promise for increasing transformation efficiency, especially for complex DNA fragments.