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Interaction Models for Water in Relation to Protein Hydration

  • H. J. C. Berendsen
  • J. P. M. Postma
  • W. F. van Gunsteren
  • J. Hermans
Part of the The Jerusalem Symposia on Quantum Chemistry and Biochemistry book series (JSQC, volume 14)

Abstract

For molecular dynamics simulations of hydrated proteins a simple yet reliable model for the intermolecular potential for water is required. Such a model must be an effective pair potential valid for liquid densities that takes average many-body interactions into account. We have developed a three-point charge model (on hydrogen and oxygen positions) with a Lennard-Jones 6–12 potential on the oxygen positions only. Parameters for the model were determined from 12 molecular dynamics runs covering the two-dimensional parameter space of charge and oxygen repulsion. Both potential energy and pressure were required to coincide with experimental values. The model has very satisfactory properties, is easily incorporated into protein-water potentials, and requires only 0.25 sec computertime per dynamics step (for 216 molecules) on a CRAY-1 computer.

Keywords

Protein Hydration Oxygen Position Effective Pair Potential Mole Cular Cage Spectral CORREl Density 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 1981

Authors and Affiliations

  • H. J. C. Berendsen
    • 1
  • J. P. M. Postma
    • 1
  • W. F. van Gunsteren
    • 1
  • J. Hermans
    • 2
  1. 1.Laboratory of Physical Chemistrythe University of GroningenGroningenthe Netherlands
  2. 2.Department of BiochemistryUniversity of North CarolinaChapel HillUSA

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