| Literature DB >> 17399710 |
Phillip A Rachwal1, Tom Brown, Keith R Fox.
Abstract
We have examined the properties of intramolecular G-quadruplexes in which the G3 tracts are separated by single base loops. The most stable complex contained 1',2'-dideoxyribose in all three loops, while loops containing T and C were slightly less stable (by about 2 degrees C). Quadruplexes containing loops with single A residues were less stable by 8 degrees C for each T to A substitution. These folded sequences display similar CD spectra, which are consistent with the formation of parallel stranded complexes with double-chain reversal loops. These results demonstrate that loop sequence, and not just length, affects quadruplex stability.Entities:
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Year: 2007 PMID: 17399710 DOI: 10.1016/j.febslet.2007.03.040
Source DB: PubMed Journal: FEBS Lett ISSN: 0014-5793 Impact factor: 4.124