Interaction between the DNA model base 9-ethylguanine and a group of ruthenium polypyridyl complexes: Kinetics and conformational temperature dependence (Articolo in rivista)

Type
Label
  • Interaction between the DNA model base 9-ethylguanine and a group of ruthenium polypyridyl complexes: Kinetics and conformational temperature dependence (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/ic070092u (literal)
Alternative label
  • Corral E.; Hotze A.C.G.; Magistrato A.; Reedijk J. (2007)
    Interaction between the DNA model base 9-ethylguanine and a group of ruthenium polypyridyl complexes: Kinetics and conformational temperature dependence
    in Inorganic chemistry
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Corral E.; Hotze A.C.G.; Magistrato A.; Reedijk J. (literal)
Pagina inizio
  • 6715 (literal)
Pagina fine
  • 6722 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 46 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 16 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Leiden Univ, Leiden Inst Chem, Gorlaeus Labs, NL-2300 RA Leiden, Netherlands; INFM, CNR Democritos, Trieste, Italy; Scuola Int Super Studi Avanzati, Trieste, Italy (literal)
Titolo
  • Interaction between the DNA model base 9-ethylguanine and a group of ruthenium polypyridyl complexes: Kinetics and conformational temperature dependence (literal)
Abstract
  • The binding capability of three ruthenium polypyridyl compounds of structural formula [Ru(apy)(tpy)Ln-](ClO4)((2-n)) [1a-c; apy = 2,2'-azobis(pyridine), tpy = 2,2':6',2 ''-terpyridine, L = Cl, H2O, CH3CN] to a fragment of DNA was studied. The interaction between each of these complexes and the DNA model base 9-ethylguanine (9-EtGua) was followed by means of H-1 NMR studies. Density functional theory calculations were carried out to explore the preferential ways of coordination between the ruthenium complexes and guanine. The ruthenium-9-EtGua adduct formed was isolated and fully characterized using different techniques. A variable-temperature H-1 NMR experiment was carried out that showed that while the 9-EtGua fragment was rotating fast at high temperature, a loss of symmetry was suffered by the model base adduct as the temperature was lowered, indicating restricted rotation of the guanine residue. (literal)
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