Dynamic crossover in complex systems: From a "simple" liquid to a protein

Alexei Sokolov; Vladimir Novikov

doi:10.1063/1.1764221

Dynamic crossover in complex systems: From a "simple" liquid to a protein

Alexei Sokolov
, Vladimir Novikov

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

In this contribution we present an overview of experimental data on dynamic crossover in various molecular and polymeric liquids, van-der-Waals, ionic, covalent and hydrogen bonded systems. We demonstrate that the structural relaxation time t measured at TD has nearly the same value, t(Td)~10-7±1 sec, for different glass-forming systems. We speculate that decoupling of various relaxation processes observed at TD might be the reason for failure of time-temperature superposition known for polymers. We demonstrate that the dynamic transition in biological macromolecules follows the scenario known for the dynamic crossover in glass forming liquids. Moreover, our analysis reveals that Td observed in dynamics of proteins is close to Td of pure solvents. We speculate that the solvent's dynamic crossover controls the dynamic transition of proteins. In other words, proteins and DNA are "slaves" of a solvent and this might open ways for a control of their biochemical activity.

Original language	English
Title of host publication	Slow Dynamics in Complex Systems
Subtitle of host publication	3rd International Symposium on Slow Dynamics in Complex Systems
Editors	Michio Tokuyama, Irwin Oppenheim
Publisher	American Institute of Physics Inc.
Pages	533-540
Number of pages	8
ISBN (Electronic)	0735401837
DOIs	https://doi.org/10.1063/1.1764221
State	Published - Apr 30 2004
Externally published	Yes
Event	3rd International Symposium on Slow Dynamics in Complex Systems - Sendai, Japan Duration: Nov 3 2003 → Nov 8 2003

Publication series

Name	AIP Conference Proceedings
Volume	708
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	3rd International Symposium on Slow Dynamics in Complex Systems
Country/Territory	Japan
City	Sendai
Period	11/3/03 → 11/8/03

Funding

This work has been supported by NSF (DMR-031538). We also thank OBR and NIST for the financial support.

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10.1063/1.1764221

Cite this

Sokolov, A., & Novikov, V. (2004). Dynamic crossover in complex systems: From a "simple" liquid to a protein. In M. Tokuyama, & I. Oppenheim (Eds.), Slow Dynamics in Complex Systems: 3rd International Symposium on Slow Dynamics in Complex Systems (pp. 533-540). (AIP Conference Proceedings; Vol. 708). American Institute of Physics Inc.. https://doi.org/10.1063/1.1764221

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abstract = "In this contribution we present an overview of experimental data on dynamic crossover in various molecular and polymeric liquids, van-der-Waals, ionic, covalent and hydrogen bonded systems. We demonstrate that the structural relaxation time t measured at TD has nearly the same value, t(Td)\textasciitilde{}10-7±1 sec, for different glass-forming systems. We speculate that decoupling of various relaxation processes observed at TD might be the reason for failure of time-temperature superposition known for polymers. We demonstrate that the dynamic transition in biological macromolecules follows the scenario known for the dynamic crossover in glass forming liquids. Moreover, our analysis reveals that Td observed in dynamics of proteins is close to Td of pure solvents. We speculate that the solvent's dynamic crossover controls the dynamic transition of proteins. In other words, proteins and DNA are {"}slaves{"} of a solvent and this might open ways for a control of their biochemical activity.",

author = "Alexei Sokolov and Vladimir Novikov",

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Sokolov, A & Novikov, V 2004, Dynamic crossover in complex systems: From a "simple" liquid to a protein. in M Tokuyama & I Oppenheim (eds), Slow Dynamics in Complex Systems: 3rd International Symposium on Slow Dynamics in Complex Systems. AIP Conference Proceedings, vol. 708, American Institute of Physics Inc., pp. 533-540, 3rd International Symposium on Slow Dynamics in Complex Systems, Sendai, Japan, 11/3/03. https://doi.org/10.1063/1.1764221

Dynamic crossover in complex systems: From a "simple" liquid to a protein. / Sokolov, Alexei; Novikov, Vladimir.
Slow Dynamics in Complex Systems: 3rd International Symposium on Slow Dynamics in Complex Systems. ed. / Michio Tokuyama; Irwin Oppenheim. American Institute of Physics Inc., 2004. p. 533-540 (AIP Conference Proceedings; Vol. 708).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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N2 - In this contribution we present an overview of experimental data on dynamic crossover in various molecular and polymeric liquids, van-der-Waals, ionic, covalent and hydrogen bonded systems. We demonstrate that the structural relaxation time t measured at TD has nearly the same value, t(Td)~10-7±1 sec, for different glass-forming systems. We speculate that decoupling of various relaxation processes observed at TD might be the reason for failure of time-temperature superposition known for polymers. We demonstrate that the dynamic transition in biological macromolecules follows the scenario known for the dynamic crossover in glass forming liquids. Moreover, our analysis reveals that Td observed in dynamics of proteins is close to Td of pure solvents. We speculate that the solvent's dynamic crossover controls the dynamic transition of proteins. In other words, proteins and DNA are "slaves" of a solvent and this might open ways for a control of their biochemical activity.

AB - In this contribution we present an overview of experimental data on dynamic crossover in various molecular and polymeric liquids, van-der-Waals, ionic, covalent and hydrogen bonded systems. We demonstrate that the structural relaxation time t measured at TD has nearly the same value, t(Td)~10-7±1 sec, for different glass-forming systems. We speculate that decoupling of various relaxation processes observed at TD might be the reason for failure of time-temperature superposition known for polymers. We demonstrate that the dynamic transition in biological macromolecules follows the scenario known for the dynamic crossover in glass forming liquids. Moreover, our analysis reveals that Td observed in dynamics of proteins is close to Td of pure solvents. We speculate that the solvent's dynamic crossover controls the dynamic transition of proteins. In other words, proteins and DNA are "slaves" of a solvent and this might open ways for a control of their biochemical activity.

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PB - American Institute of Physics Inc.

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Dynamic crossover in complex systems: From a "simple" liquid to a protein

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