In the present study, the thermal unfolding of lysozyme in D(2)O and D(2)O/CH(3)CH(2)OD solutions is analyzed by means of FTIR spectroscopy. A detailed investigation of the conformational rearrangement of the protein upon heating is achieved by inspection of the amide bands. The effects of partial and total deuteration on amide groups are also investigated for they suggest important information about exposure to the solvent. Finally, a comparison between the characteristics of the unfolding process of lysozyme in water and in ethanol/water solutions is performed to clarify some misinterpretation about the possible formation of intermediates.
Conformational changes in the unfolding process of lysozyme in water and ethanol/water solutions
SASSI, Paola;GIUGLIARELLI, ALESSANDRA;PAOLANTONI, Marco;MORRESI, Assunta
2011
Abstract
In the present study, the thermal unfolding of lysozyme in D(2)O and D(2)O/CH(3)CH(2)OD solutions is analyzed by means of FTIR spectroscopy. A detailed investigation of the conformational rearrangement of the protein upon heating is achieved by inspection of the amide bands. The effects of partial and total deuteration on amide groups are also investigated for they suggest important information about exposure to the solvent. Finally, a comparison between the characteristics of the unfolding process of lysozyme in water and in ethanol/water solutions is performed to clarify some misinterpretation about the possible formation of intermediates.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
