Temperature dependence of fast fluctuations in single- and double-stranded DNA molecules: a neutron scattering investigation (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Temperature dependence of fast fluctuations in single- and double-stranded DNA molecules: a neutron scattering investigation (Articolo in rivista) (literal)

Anno

• 2007-01-01T00:00:00+01:00 (literal)

Alternative label

• Cornicchi, E; Capponi, S; Marconi, M; Onori, G; Paciaroni, A (2007)
  Temperature dependence of fast fluctuations in single- and double-stranded DNA molecules: a neutron scattering investigation
  
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Cornicchi, E; Capponi, S; Marconi, M; Onori, G; Paciaroni, A (literal)

Pagina inizio

• 509 (literal)

Pagina fine

• 515 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 87 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Univ Perugia, Dipartimento Fis, CEMIN, I-06123 Perugia, Italy; INFM, CRS, SOFT, I-06123 Perugia, Italy; UPV EHU, Fac Quim, Donostia Int Phys Ctr, San Sebastian, Spain; UPV EHU, Dept Fis Mat, San Sebastian, Spain (literal)

Titolo

• Temperature dependence of fast fluctuations in single- and double-stranded DNA molecules: a neutron scattering investigation (literal)

Abstract

• Using elastic neutron scattering measurements we have investigated the picosecond dynamics of dry and hydrated powders of DNA in the double-stranded (dsDNA) and single-stranded (ssDNA) state in the temperature range from 20 to 300 K. The extracted mean square displacements of DNA hydrogen atoms exhibit an onset of anharmonicity at around 100 K. The dynamics of the hydrated samples shows a further anharmonic contribution appearing at a temperature T-d=230-240K. Such dynamical behaviour is similar to the well-studied dynamical transition found in hydrated protein powders. The mean square displacements of dsDNA and ssDNA are practically superimposed in tile whole temperature range for both dry and hydrated samples. This suggests that the DNA local mobility in the picosecond timescale does not depend on the single- or double-stranded conformation. (literal)

Prodotto di

• Materia soffice: Self Assembly, Clustering, Arresto Strutturale (MD.P02.015.001) (Modulo)

Autore CNR

• GIUSEPPE ONORI (Persona)
• ALESSANDRO PACIARONI (Persona)

Insieme di parole chiave

• Parole chiave di "Temperature dependence of fast fluctuations in single- and double-stranded DNA molecules: a neutron scattering investigation" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• ALESSANDRO PACIARONI (Persona)
• GIUSEPPE ONORI (Persona)

Prodotto

• Materia soffice: Self Assembly, Clustering, Arresto Strutturale (MD.P02.015.001) (Modulo)

Insieme di parole chiave di

• Parole chiave di "Temperature dependence of fast fluctuations in single- and double-stranded DNA molecules: a neutron scattering investigation" (Insieme di parole chiave)