Structural fluctuations and aging processes in deeply frozen proteins
Frozen proteins are nonergodic systems and are subject to two types of structural motions, namely relaxation and fluctuation. Relaxation manifests itself in aging processes which slow the fluctuations. Within certain approximations we are able to experimentally separate the aging dynamics from the f...
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| Published in: | Физика низких температур |
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| Date: | 2003 |
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| Format: | Article |
| Language: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2003
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/128929 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Structural fluctuations and aging processes in deeply frozen proteins / J. Schlichter, V.V. Ponkratov, J. Friedrich // Физика низких температур. — 2003. — Т. 29, № 9-10. — С. 1049-1056. — Бібліогр.: 21 назв. — англ. |
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Schlichter, J. Ponkratov, V.V. Friedrich, J. 2018-01-14T13:04:47Z 2018-01-14T13:04:47Z 2003 Structural fluctuations and aging processes in deeply frozen proteins / J. Schlichter, V.V. Ponkratov, J. Friedrich // Физика низких температур. — 2003. — Т. 29, № 9-10. — С. 1049-1056. — Бібліогр.: 21 назв. — англ. 0132-6414 PACS: 87.15.-v https://nasplib.isofts.kiev.ua/handle/123456789/128929 Frozen proteins are nonergodic systems and are subject to two types of structural motions, namely relaxation and fluctuation. Relaxation manifests itself in aging processes which slow the fluctuations. Within certain approximations we are able to experimentally separate the aging dynamics from the fluctuation dynamics by introducing two time parameters, namely an aging time ta and a waiting time tw. Both processes follow power laws in time. The fluctuation dynamics shows features of universality characterized by a rather uniform exponent of 1/4. This universality features were shown to be possible due to a random walk on a 1D random trajectory in conformational phase space. A very interesting aspect of protein dynamics concerns the influence of the host solvent on structural motions of the protein cores. We present results for sugar solvents and discuss possible mechanisms. Support from the DFG (SFB 533, B5) and from the Fonds der Chemischen Industrie is gratefully acknowledged. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Biological Systems at Low Temperatures Structural fluctuations and aging processes in deeply frozen proteins Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Structural fluctuations and aging processes in deeply frozen proteins |
| spellingShingle |
Structural fluctuations and aging processes in deeply frozen proteins Schlichter, J. Ponkratov, V.V. Friedrich, J. Biological Systems at Low Temperatures |
| title_short |
Structural fluctuations and aging processes in deeply frozen proteins |
| title_full |
Structural fluctuations and aging processes in deeply frozen proteins |
| title_fullStr |
Structural fluctuations and aging processes in deeply frozen proteins |
| title_full_unstemmed |
Structural fluctuations and aging processes in deeply frozen proteins |
| title_sort |
structural fluctuations and aging processes in deeply frozen proteins |
| author |
Schlichter, J. Ponkratov, V.V. Friedrich, J. |
| author_facet |
Schlichter, J. Ponkratov, V.V. Friedrich, J. |
| topic |
Biological Systems at Low Temperatures |
| topic_facet |
Biological Systems at Low Temperatures |
| publishDate |
2003 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
Frozen proteins are nonergodic systems and are subject to two types of structural motions, namely relaxation and fluctuation. Relaxation manifests itself in aging processes which slow the fluctuations. Within certain approximations we are able to experimentally separate the aging dynamics from the fluctuation dynamics by introducing two time parameters, namely an aging time ta and a waiting time tw. Both processes follow power laws in time. The fluctuation dynamics shows features of universality characterized by a rather uniform exponent of 1/4. This universality features were shown to be possible due to a random walk on a 1D random trajectory in conformational phase space. A very interesting aspect of protein dynamics concerns the influence of the host solvent on structural motions of the protein cores. We present results for sugar solvents and discuss possible mechanisms.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/128929 |
| citation_txt |
Structural fluctuations and aging processes in deeply frozen proteins / J. Schlichter, V.V. Ponkratov, J. Friedrich // Физика низких температур. — 2003. — Т. 29, № 9-10. — С. 1049-1056. — Бібліогр.: 21 назв. — англ. |
| work_keys_str_mv |
AT schlichterj structuralfluctuationsandagingprocessesindeeplyfrozenproteins AT ponkratovvv structuralfluctuationsandagingprocessesindeeplyfrozenproteins AT friedrichj structuralfluctuationsandagingprocessesindeeplyfrozenproteins |
| first_indexed |
2025-12-07T16:40:17Z |
| last_indexed |
2025-12-07T16:40:17Z |
| _version_ |
1850868359463174144 |