http://www.cnr.it/ontology/cnr/individuo/prodotto/ID317890
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)
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- 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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