In order to determine the behavior of the Fe2+ site as a function of the absorbed dose, we measured fluorescence-detected XANES spectra as a function of the X-ray flux, both in PVA films and dry trehalose matrices at room temperature and in the dark. No changes were observed in the XANES spectra of RC in PVA as a function of the absorbed dose, to the contrary of what was expected on the basis of preliminary measurements. A detailed data analysis allowed us to determine with a high resolution the local structure around Fe for the RC embedded in both in trehalose in the PVA matrix.
G. Venturoli, F. Boscherini, L. Giachini, F. Francia, G. Veronesi, G. Palazzo (2007). Trehalose-induced elimination of x-ray damage in the bacterial photosynthetic reaction center. SC-2211..
Trehalose-induced elimination of x-ray damage in the bacterial photosynthetic reaction center. SC-2211.
VENTUROLI, GIOVANNI;BOSCHERINI, FEDERICO;GIACHINI, LISA;FRANCIA, FRANCESCO;VERONESI, GIULIA;
2007
Abstract
In order to determine the behavior of the Fe2+ site as a function of the absorbed dose, we measured fluorescence-detected XANES spectra as a function of the X-ray flux, both in PVA films and dry trehalose matrices at room temperature and in the dark. No changes were observed in the XANES spectra of RC in PVA as a function of the absorbed dose, to the contrary of what was expected on the basis of preliminary measurements. A detailed data analysis allowed us to determine with a high resolution the local structure around Fe for the RC embedded in both in trehalose in the PVA matrix.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
