Thermodynamic study of the discrimination between uridine and thymidine derivatives by hydrophobic, stacking, and intercalating interactions

M. V. Rekharsky, Asao Nakamura, G. A. Hembury, Y. Inoue

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Thermodynamic parameters for the complexation reactions of uridine/thymidine nucleobases and related compounds, with hosts of differing binding modes and properties (natural cyclodextrins, 5,10,15,20-tetrakis (1-methlpyridinium-4-yl) porphyrin tetrachloride and bis-intercaland macrocycle) have been determined by titration microcalorimetry and/or fluorometry, in an aqueous buffer. For each of these hosts the effect of the 5-methyl group on the binding affinities was investigated. Although the affinities of uridine and thymidine towards cyclodextrins and 5,10,15,20-tetrakis(1-methylpyridinium-4-yl)porphyrin tetrachloride are very similar, the intercalation of these compounds into the bis-intercaland macrocycle has been shown to result in a high degree of discrimination of approximately 10 times. On the basis of thermodynamic data, the obtained contribution made by the 5-methyl group of thymidine to the structural characteristics of DNA and RNA is discussed.

Original languageEnglish
Pages (from-to)449-457
Number of pages9
JournalBulletin of the Chemical Society of Japan
Volume74
Issue number3
DOIs
Publication statusPublished - 2001 Mar
Externally publishedYes

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Uridine
Thymidine
Porphyrins
Cyclodextrins
Thermodynamics
Derivatives
Intercalation
Complexation
Titration
Buffers
RNA
DNA

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Thermodynamic study of the discrimination between uridine and thymidine derivatives by hydrophobic, stacking, and intercalating interactions. / Rekharsky, M. V.; Nakamura, Asao; Hembury, G. A.; Inoue, Y.

In: Bulletin of the Chemical Society of Japan, Vol. 74, No. 3, 03.2001, p. 449-457.

Research output: Contribution to journalArticle

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