Separation of Quadruplex Polymorphism in DNA Sequences by Reversed-Phase Chromatography

Current Protocols in Nucleic Acid Chemistry
M Clarke MillerJohn O Trent

Abstract

This unit describes a method for the separation of a mixture of quadruplex conformations formed from the same parent sequence via reversed-phase chromatography (RPC). Polymorphism is inherent to quadruplex formation and even relatively simple quadruplex-forming sequences can fold into a cornucopia of possible conformations and topologies. Isolation of a specific conformation for study can be problematic. This is especially true for conformations of the human telomere sequence d(GGG(TTAGGG)3). High performance liquid chromatography (HPLC), especially reversed-phase chromatography, has been a mainstay of nucleic acid research and purification for many decades. We have successfully applied this method to the problem of separating individual quadruplex species in the ensemble from the same parent sequence.

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Citations

Mar 3, 2017·Current Protocols in Nucleic Acid Chemistry·Rafael Del Villar-GuerraJonathan B Chaires
Dec 23, 2016·Biochimica Et Biophysica Acta. General Subjects·Paula J BatesJohn O Trent
Aug 18, 2021·Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences·Alyssa McAdoreyHongbin Yan

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