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The Stability of the B Conformation in Wet-spun Films of CaDNA: A Raman Study as a Function of Water Content
Stockholm University, Faculty of Science, Department of Physical, Inorganic and Structural Chemistry, Physical Chemistry.
2009 (English)In: Journal of Biomolecular Structure and Dynamics, ISSN 0739-1102, Vol. 27, no 1, 105-110 p.Article in journal (Refereed) Published
Abstract [en]

Raman spectra from 600 to 1150 cm(-1) have been collected from wet-spun films of highly oriented CaDNA as a function of relative humidity (rh). Particular attention was paid to the Raman modes at 834 and 807 cm(-1); the presence of these modes indicates that the DNA backbone is in the B or A conformations. Though the B conformation is usually found only under conditions of high hydration in such wet-spun films, CaDNA is found to remain in the B conformation down to 75% rh. These results are consistent with the hypothesis that intermolecular bonds in ordered samples of DNA are critical for the stabilization of the A conformation of DNA.

Place, publisher, year, edition, pages
2009. Vol. 27, no 1, 105-110 p.
Keyword [en]
x-ray-diffraction, t-g-g, dna films, crystal-structures, nucleic-acids, a-transition, oriented dna, na-dna, li-dna, hydration
National Category
Natural Sciences
URN: urn:nbn:se:su:diva-59954ISI: 000268075200010OAI: diva2:432629
authorCount :3Available from: 2011-08-04 Created: 2011-08-02 Last updated: 2011-08-04Bibliographically approved

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