A tetrameric PNA, TGGG, has been shown to form an intermolecular G-quadruplex. Nanoelectrospray mass spectrometry, combined with solution-phase H/D exchange, established formation of a specific tetramolecular complex. UV melting studies show that this complex undergoes a quadruplex melting transition. This is a novel four-stranded structure that offers the gross structural features of a DNA quadruplex, but without the negatively charged backbone.
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J Am Chem Soc
May 2004
University Chemical Laboratories, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.
A tetrameric PNA, TGGG, has been shown to form an intermolecular G-quadruplex. Nanoelectrospray mass spectrometry, combined with solution-phase H/D exchange, established formation of a specific tetramolecular complex. UV melting studies show that this complex undergoes a quadruplex melting transition.
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