Terahertz Dynamics in Human Cells and Their Chromatin (Articolo in rivista)

Type
Label
  • Terahertz Dynamics in Human Cells and Their Chromatin (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/jz500918w (literal)
Alternative label
  • Longo, M.; Marconi, M.; Orecchini, A.; Petrillo, C.; Monaco, G.; Calvitti, M.; Pirisinu, I.; Romani, R.; Sacchetti, F.; Sebastiani, F.; Zanatta, M.; Paciaroni, A. (2014)
    Terahertz Dynamics in Human Cells and Their Chromatin
    in The journal of physical chemistry letters
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Longo, M.; Marconi, M.; Orecchini, A.; Petrillo, C.; Monaco, G.; Calvitti, M.; Pirisinu, I.; Romani, R.; Sacchetti, F.; Sebastiani, F.; Zanatta, M.; Paciaroni, A. (literal)
Pagina inizio
  • 2177 (literal)
Pagina fine
  • 2181 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 5 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 13 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • University of Perugia; Elettra Sincrotrone Trieste; University of Trento; University of Perugia; Consiglio Nazionale delle Ricerche (CNR) (literal)
Titolo
  • Terahertz Dynamics in Human Cells and Their Chromatin (literal)
Abstract
  • The terahertz dynamics of human cells of the U937 line and their chromatin has been investigated by high-resolution inelastic X-ray scattering. To highlight its dynamical features in situ, nuclear DNA has been stained by uranyl-acetate salt. The general behavior of the collective dynamics of the whole cell is quite similar to that of bulk water, with a nearly wavevector-independent branch located at about 5 meV and a propagating mode with a linear trend corresponding to a speed of sound of 2900 +/- 100 m/s. We provide the first experimental evidence for the existence of two branches also in the dispersion curves of chromatin. The high-energy mode displays an acoustic-like behavior with a sound velocity similar to unstained cells, but in this case the branch likely originates from the superposition of intramolecular DNA optic modes. A low-energy optic-like branch, distinctive of the chromatin moiety, is found at about 2.5 meV. (literal)
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Autore CNR

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