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EnglishNa/K-ATPase powder samples were analyzed, both in lyophilized and rehydrated states, by a latest generation Raman spectrometer mounting Ultra Low Frequency (ULF) filters that allowed investigating even the lower frequencies (<500 cm^-1 = 15 THz). While several known peaks, which are assigned in the literature to molecular vibrations of chemical groups or amino acids, were recognised in the 500–3500 cm^-1 range, the analysis of the sub–500 cm^-1 region, performed with two different resolutions, allowed finding unassigned peaks. Such low-frequency peaks are apparently unknown in the current literature for Na/K-ATPase. Recent studies suggested that low-frequency collective vibrations that involve large protein portions are strictly correlated to protein functions. Thus, the present results could be of interest with regard to possible connections between low-frequency mechanical vibrations and the operating mechanism of the sodium-potassium pump.
| Titolo: | Raman spectroscopy of Na/K-ATPase with special focus on low-frequency vibrations |
| Autori: | |
| Data di pubblicazione: | 2017 |
| Rivista: | |
| Digital Object Identifier (DOI): | 10.1016/j.vibspec.2017.08.002 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| 1-s2.0-S0924203117301996-main.pdf | Articolo completo | 2. Post-print | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
http://hdl.handle.net/11583/2689587
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