skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Structural Interpretation of the Large Slowdown of Water Dynamics at Stacked Phospholipid Membranes for Decreasing Hydration Level: All-Atom Molecular Dynamics

Journal Article · · Materials
DOI:https://doi.org/10.3390/ma9050319· OSTI ID:1362104
 [1];  [2]; ORCiD logo [3]
  1. Univ of Barcelona (Spain). Statistical Physics and Interdisciplinary Section, Dept. of Condensed Matter Physics; Univ of Barcelona (Spain). Inst. of Nanoscience and Nanotechnology; Boston Univ., MA (United States). Center for Polymer Studies and Dept. of Physics
  2. Boston Univ., MA (United States). Center for Polymer Studies and Dept. of Physics
  3. Univ of Barcelona (Spain). Statistical Physics and Interdisciplinary Section, Dept. of Condensed Matter Physics; Univ of Barcelona (Spain). Inst. of Nanoscience and Nanotechnology

Hydration water determines the stability and function of phospholipid membranes as well as the interaction of membranes with other molecules. Experiments and simulations have shown that water dynamics slows down dramatically as the hydration decreases, suggesting that the interfacial water that dominates the average dynamics at low hydration is slower than water away from the membrane. Here, based on all-atom molecular dynamics simulations, we provide an interpretation of the slowdown of interfacial water in terms of the structure and dynamics of water–water and water–lipid hydrogen bonds (HBs). We calculate the rotational and translational slowdown of the dynamics of water confined in stacked phospholipid membranes at different levels of hydration, from completely hydrated to poorly hydrated membranes. For all hydrations, we analyze the distribution of HBs and find that water–lipids HBs last longer than water–water HBs and that at low hydration most of the water is in the interior of the membrane. We also show that water–water HBs become more persistent as the hydration is lowered. We attribute this effect (i) to HBs between water molecules that form, in turn, persistent HBs with lipids; (ii) to the hindering of the H-bonding switching between water molecules due to the lower water density at the interface; and (iii) to the higher probability of water–lipid HBs as the hydration decreases. Lastly, our interpretation of the large dynamic slowdown in water under dehydration is potentially relevant in understanding membrane biophysics at different hydration levels.

Research Organization:
Boston Univ., MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AI02-07ER64491; AC07-05ID14517; CMMI 1125290; PHY 1505000; CHE-1213217
OSTI ID:
1362104
Journal Information:
Materials, Vol. 9, Issue 5; ISSN 1996-1944
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

References (37)

Aqueous Solutions next to Phospholipid Membrane Surfaces:  Insights from Simulations journal April 2006
Interactions of Hydration Water and Biological Membranes Studied by Neutron Scattering journal September 1999
Hydration dependent studies of highly aligned multilayer lipid membranes by neutron scattering journal October 2010
More than one dynamic crossover in protein hydration water journal November 2011
Distinct Water Species Confined at the Interface of a Phospholipid Membrane journal August 2007
Water at the Surfaces of Aligned Phospholipid Multibilayer Model Membranes Probed with Ultrafast Vibrational Spectroscopy journal October 2008
Dielectric Relaxation Dynamics of Water in Model Membranes Probed by Terahertz Spectroscopy journal November 2009
Structure and dynamics of water at the interface with phospholipid bilayers journal December 2005
Orientational Dynamics of Water in Phospholipid Bilayers with Different Hydration Levels journal May 2009
Vibrational spectroscopy of water in hydrated lipid multi-bilayers. I. Infrared spectra and ultrafast pump-probe observables journal August 2011
Liquid-liquid critical point in a Hamiltonian model for water: analytic solution journal February 2002
Molecular dynamics study of orientational cooperativity in water journal April 2006
A Molecular Jump Mechanism of Water Reorientation journal February 2006
Effect of hydrogen bond cooperativity on the behavior of water journal January 2010
Structure of Fully Hydrated Fluid Phase DMPC and DLPC Lipid Bilayers Using X-Ray Scattering from Oriented Multilamellar Arrays and from Unilamellar Vesicles journal April 2005
An algorithm to describe molecular scale rugged surfaces and its application to the study of a water/lipid bilayer interface journal July 2003
Hydrogen Bonding Structure and Dynamics of Water at the Dimyristoylphosphatidylcholine Lipid Bilayer Surface from a Molecular Dynamics Simulation journal May 2004
Scalable molecular dynamics with NAMD journal January 2005
Update of the CHARMM All-Atom Additive Force Field for Lipids: Validation on Six Lipid Types journal June 2010
Update of the Cholesterol Force Field Parameters in CHARMM journal December 2011
Comparison of simple potential functions for simulating liquid water journal July 1983
All-Atom Empirical Potential for Molecular Modeling and Dynamics Studies of Proteins journal April 1998
A smooth particle mesh Ewald method journal November 1995
Molecular dynamics with coupling to an external bath journal October 1984
Constant pressure molecular dynamics simulation: The Langevin piston method journal September 1995
Effects of Temperature Control Algorithms on Transport Properties and Kinetics in Molecular Dynamics Simulations journal June 2013
Imaging α-Hemolysin with Molecular Dynamics: Ionic Conductance, Osmotic Permeability, and the Electrostatic Potential Map journal June 2005
Diffusion constant of the TIP5P model of liquid water journal January 2001
Water diffusivity in model biological membranes journal September 2004
The effect of acidic pH on the adsorption and lytic activity of the peptides Polybia-MP1 and its histidine-containing analog in anionic lipid membrane: a biophysical study by molecular dynamics and spectroscopy journal April 2021
Pulsed field gradient-spin echo NMR studies of water diffusion in a phospholipid model membrane journal November 1996
X-ray structure determination of fully hydrated L alpha phase dipalmitoylphosphatidylcholine bilayers journal March 1996
The dynamics of water at the phospholipid bilayer surface: a molecular dynamics simulation study journal February 2002
Relations between the diffusion anomaly and cooperative rearranging regions in a hydrophobically nanoconfined water monolayer journal January 2012
Anomalous Anisotropic Diffusion Dynamics of Hydration Water at Lipid Membranes journal September 2013
Structure of Fully Hydrated Fluid Phase DMPC and DLPC Lipid Bilayers Using X-Ray Scattering from Oriented Multilamellar Arrays and from Unilamellar Vesicles text January 2005
Effect of hydrogen bond cooperativity on the behavior of water preprint January 2008

Cited By (5)

Two structural relaxations in protein hydration water and their dynamic crossovers journal July 2016
A compact device for simultaneous dielectric spectroscopy and microgravimetric analysis under controlled humidity journal December 2019
The Franzese-Stanley Coarse Grained Model for Hydration Water preprint January 2020
Re-defining the concept of hydration water in water under soft confinement preprint January 2021
Network Topology in Water Nanoconfined between Phospholipid Membranes text January 2021