Volume 24, Issue 5 pp. 432-438
Regular Article

Supramolecular arrangement of guanosine/5′-guanosine monophosphate binary mixtures studied by methods of circular dichroism

Jana Novotná

Jana Novotná

Department of Analytical Chemistry, Institute of Chemical Technology, Prague, Prague 6, Czech Republic

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Iryna Goncharova

Iryna Goncharova

Department of Analytical Chemistry, Institute of Chemical Technology, Prague, Prague 6, Czech Republic

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Marie Urbanová

Corresponding Author

Marie Urbanová

Department of Physics and Measurements, Institute of Chemical Technology, Prague, Prague 6, Czech Republic

Marie Urbanová, Department of Physics and Measurements, Institute of Chemical Technology, Prague, Technická 5, Prague 6, 166 28, Czech Republic. E-mail:[email protected]Search for more papers by this author
First published: 19 April 2012
Citations: 16

Abstract

Self-assembly of molecules is one of the fundamental processes in biology and in supramolecular chemistry. Guanosine (Guo) and its derivatives are among the widely studied molecules because of self-assembly abilities. Their tetrameric associates are the nature of telomeric DNA, and furthermore they are fundamental building blocks of supramolecular reversible gels, which may arise in certain physical and chemical conditions. Although poorly soluble in water, Guo forms interesting structures with guanosine 5′-monophosphate salt (GMP) in the TRIS buffer. We used electronic circular dichroism and vibrational circular dichroism to describe the thermal response of gels formed by the Guo/GMP binary mixture. Using these complementary techniques suitable to study conformational changes of chiral compounds, we obtained information about the involvement of functional groups and weak interactions in the guanosine quartet (G4) and stacked G4 structures. Chirality 24:432–438, 2012. © 2012 Wiley Periodicals, Inc.

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