Use of Competition Dialysis in the Discovery of G-quadruplex Selective Ligands

Overview

Journal Methods

Specialty Biochemistry

Date 2007 Oct 31

PMID 17967701

Citations 28

Authors

Patricia Ragazzon

Jonathan B Chaires

Affiliations

Soon will be listed here.

Abstract

G-quadrplex DNA can exist in a rich variety of structural forms, ranging from unimolecular folded structures containing diverse types of loops and strand oreintations, to bimolecular dimeric structures, and finally to tetramolecular parallel-stranded structures. These diverse structures present numerous potential small molecule binding sites with distinctive properties. There is mounting evidence for important functional roles for G-quadruplex structures in biology. G-quadruplexes may participate in the maintenance of telomeres, in transcriptional regulation and, in mRNA, may act to modulate translation. G-quadruplexes thus represent an attractive target for new small-molecule therapeutic agents. Competition dialysis provides a useful tool for the discovery of small molecules that selectively recognize the unique structural features of G-quadruplexes. The principles and practice of the competition dialysis experiment are described here.

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