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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| Veröffentlicht in: | Физика низких температур |
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| Datum: | 2003 |
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| Sprache: | Englisch |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2003
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | 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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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862700983564369920 |
|---|---|
| author | Schlichter, J. Ponkratov, V.V. Friedrich, J. |
| author_facet | Schlichter, J. Ponkratov, V.V. Friedrich, J. |
| 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. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| 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.
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| first_indexed | 2025-12-07T16:40:17Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-128929 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T16:40:17Z |
| publishDate | 2003 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | 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 |
| spellingShingle | Structural fluctuations and aging processes in deeply frozen proteins Schlichter, J. Ponkratov, V.V. Friedrich, J. Biological Systems at Low Temperatures |
| title | 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_short | Structural fluctuations and aging processes in deeply frozen proteins |
| title_sort | structural fluctuations and aging processes in deeply frozen proteins |
| topic | Biological Systems at Low Temperatures |
| topic_facet | Biological Systems at Low Temperatures |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/128929 |
| work_keys_str_mv | AT schlichterj structuralfluctuationsandagingprocessesindeeplyfrozenproteins AT ponkratovvv structuralfluctuationsandagingprocessesindeeplyfrozenproteins AT friedrichj structuralfluctuationsandagingprocessesindeeplyfrozenproteins |