Volume-Energy Correlations in the Slow Degrees of Freedom of Computer-Simulated Phospholipid Membranes

U.R. Pedersen; Günther H.j. Peters; T.B. Schröder; J.C. Dyre

Volume-Energy Correlations in the Slow Degrees of Freedom of Computer-Simulated Phospholipid Membranes

U.R. Pedersen
, Günther H.j. Peters
, T.B. Schröder
, J.C. Dyre

Department of Chemistry

Roskilde University

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

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Abstract

Constant-pressure molecular-dynamics simulations of phospholipid membranes in the fluid L_α phase reveal strong correlations between equilibrium fluctuations of volume and energy on the nanosecond time-scale. The existence of strong volume-energy correlations was previously deduced indirectly by Heimburg from experiments focusing on the phase transition between the L_α and the L_β phases. The correlations, which are reported here for three different membranes (DMPC, DMPS-Na, and DMPSH), have volume-energy correlation coefficients ranging from 0.81 to 0.89. The DMPC membrane was studied at two temperatures showing that the correlation coefficient increases as the phase transition is approached.

Original language	English
Title of host publication	AIP Conference Proceedings
Number of pages	3
Volume	982
Publisher	American Institute of Physics
Publication date	2008
Pages	407-409
Publication status	Published - 2008
Event	Complex Systems : 5th International Workshop on Complex Systems - Duration: 1 Jan 2008 → …

Conference

Conference	Complex Systems : 5th International Workshop on Complex Systems
Period	01/01/2008 → …

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title = "Volume-Energy Correlations in the Slow Degrees of Freedom of Computer-Simulated Phospholipid Membranes",

abstract = "Constant-pressure molecular-dynamics simulations of phospholipid membranes in the fluid Lα phase reveal strong correlations between equilibrium fluctuations of volume and energy on the nanosecond time-scale. The existence of strong volume-energy correlations was previously deduced indirectly by Heimburg from experiments focusing on the phase transition between the Lα and the Lβ phases. The correlations, which are reported here for three different membranes (DMPC, DMPS-Na, and DMPSH), have volume-energy correlation coefficients ranging from 0.81 to 0.89. The DMPC membrane was studied at two temperatures showing that the correlation coefficient increases as the phase transition is approached. ",

author = "U.R. Pedersen and Peters, \{G{\"u}nther H.j.\} and T.B. Schr{\"o}der and J.C. Dyre",

year = "2008",

language = "English",

volume = "982",

pages = "407--409",

booktitle = "AIP Conference Proceedings",

publisher = "American Institute of Physics",

note = "Complex Systems : 5th International Workshop on Complex Systems ; Conference date: 01-01-2008",

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Volume-Energy Correlations in the Slow Degrees of Freedom of Computer-Simulated Phospholipid Membranes. / Pedersen, U.R.; Peters, Günther H.j.; Schröder, T.B. et al.
AIP Conference Proceedings. Vol. 982 American Institute of Physics, 2008. p. 407-409.

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

TY - GEN

T1 - Volume-Energy Correlations in the Slow Degrees of Freedom of Computer-Simulated Phospholipid Membranes

AU - Pedersen, U.R.

AU - Peters, Günther H.j.

AU - Schröder, T.B.

AU - Dyre, J.C.

PY - 2008

Y1 - 2008

N2 - Constant-pressure molecular-dynamics simulations of phospholipid membranes in the fluid Lα phase reveal strong correlations between equilibrium fluctuations of volume and energy on the nanosecond time-scale. The existence of strong volume-energy correlations was previously deduced indirectly by Heimburg from experiments focusing on the phase transition between the Lα and the Lβ phases. The correlations, which are reported here for three different membranes (DMPC, DMPS-Na, and DMPSH), have volume-energy correlation coefficients ranging from 0.81 to 0.89. The DMPC membrane was studied at two temperatures showing that the correlation coefficient increases as the phase transition is approached.

AB - Constant-pressure molecular-dynamics simulations of phospholipid membranes in the fluid Lα phase reveal strong correlations between equilibrium fluctuations of volume and energy on the nanosecond time-scale. The existence of strong volume-energy correlations was previously deduced indirectly by Heimburg from experiments focusing on the phase transition between the Lα and the Lβ phases. The correlations, which are reported here for three different membranes (DMPC, DMPS-Na, and DMPSH), have volume-energy correlation coefficients ranging from 0.81 to 0.89. The DMPC membrane was studied at two temperatures showing that the correlation coefficient increases as the phase transition is approached.

M3 - Article in proceedings

VL - 982

SP - 407

EP - 409

BT - AIP Conference Proceedings

PB - American Institute of Physics

T2 - Complex Systems : 5th International Workshop on Complex Systems

Y2 - 1 January 2008

ER -

Volume-Energy Correlations in the Slow Degrees of Freedom of Computer-Simulated Phospholipid Membranes

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