Sequence-specific DNA purification by triplex affinity capture.

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Sequence-specific DNA purification by triplex affinity capture.

A DNA isolation procedure was developed by using triple-helix formation and magnetic separation. In this procedure, target DNA is captured by a biotinylated oligonucleotide via intermolecular triplex formation, bound to streptavidin-coated magnetic beads, and recovered in double-stranded form by elution with a mild alkaline buffer that destabilizes the triple helix. The effectiveness of the pro...

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Purification of sequence-specific DNA-binding proteins by affinity chromatography.

The affinity chromatography procedure described in this unit uses DNA containing specific recognition sites for the desired protein that has been covalently linked to a solid support. Preparation of a DNA affinity resin, including cyanogen bromide (CNBr) activation of the agarose support, is described, and an alternate protocol provides a method to couple DNA to commercially available CNBr-acti...

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ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 1992

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.89.2.495