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- W2097124464 abstract "The interaction between the oligonucleotide d[G(CG)(7)]. d[C(GC)(7)] and the three biogenic polyamines putrescine, spermidine, and spermine under physiological conditions has been studied by Raman spectroscopy. The results indicate the formation of highly ordered aggregated structures in solution, largely stabilized by electrostatic attractions, which have been described as cholesteric phases. Aggregation seems to be preceded by a partial B --> Z conformational transition for spermidine and spermine, which would allow for a deeper oligonucleotide-polyamine interaction. Interaction with the nucleic bases has also been evidenced for aggregates. At low polyamine concentrations the preferential binding sites are similar to those proposed for their interactions with ct-DNA. With increasing the polyamine concentration, the oligonucleotide-polyamine interactions involve both minor and major grooves, which is consistent with the formation of cholesteric phases." @default.
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- W2097124464 date "2001-07-01" @default.
- W2097124464 modified "2023-10-06" @default.
- W2097124464 title "Raman Study of the Interaction between Polyamines and a GC Oligonucleotide" @default.
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- W2097124464 doi "https://doi.org/10.1006/bbrc.2001.5192" @default.
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