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Updated: Jul 14, 2026

Direct Observation of Enzymes Replicating DNA Using a Single-molecule DNA Stretching Assay
Published on: March 23, 2010
DNA-catalyzed transfer of a reporter group
Tom N Grossmann1, Oliver Seitz
1Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, D-12489 Berlin, Germany.
Abstract:
Herein we describe a novel DNA-catalyzed transfer of a reporter group from a donating to an accepting oligo-peptide nucleic acid (PNA), generating high catalytic turnover numbers in a DNA-sequence specific manner. The demonstrated transfer of the Dabcyl group was designed to switch on emission of a fluorescein dye while switching off emission of a rhodamine dye. This setup allows the highly sensitive and selective detection of DNA-sequences in real time.
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