Selective binding of nucleosides to gapped DNA duplex revealed by orientation and distance dependence of FRET
Literature Information
Hiromu Kashida, Yuta Kokubo, Koki Makino, Hiroyuki Asanuma
Herein we used orientation and distance dependence of Förster resonance energy transfer (FRET) to analyze the binding of nucleosides to a gapped DNA duplex. Binding isotherms and information on the structures of the complexes were obtained by monitoring FRET between pyrene and perylene, which were introduced into the DNA through D-threoninol. FRET efficiency significantly changed upon formation of a duplex with a 1-nucleotide gap and a nucleoside. The FRET plot indicated that the complex has a double helical structure similar to a nicked duplex. Cooperative binding of two nucleosides to a duplex with a 2-nucleotide gap was also revealed using FRET. Various drug-nucleic acids interactions could be investigated using this sensitive and facile method.
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Organic & Biomolecular Chemistry

Organic & Biomolecular Chemistry (OBC) publishes original and high impact research and reviews in organic chemistry. We welcome research that shows new or significantly improved protocols or methodologies in total synthesis, synthetic methodology or physical and theoretical organic chemistry as well as research that shows a significant advance in the organic chemistry or molecular design aspects of chemical biology, catalysis, supramolecular and macromolecular chemistry, theoretical chemistry, mechanism-oriented physical organic chemistry, medicinal chemistry or natural products. Articles published in the journal should report new work which makes a highly-significant impact in the field. Routine and incremental work is generally not suitable for publication in the journal. More details about key areas of our scope are below. In all cases authors should include in their article clear rationale for why their research has been carried out.














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