John,
It is most likely from the water. Note the very negative electrostatic
energy. Once in th vdW well (negative vdW energy) the highly polar water
molecules keep attracting and pull in past the point where the
vdW is negative. In other words, it takes enough vdW repulsion to equalize
the polar attraction of water to be within the positive region.
Hope that helps.
Mike
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Physical mail: Dr. Michael F. Crowley
Department of Molecular Biology, TPC6
The Scripps Research Institute
10550 North Torrey Pines Road
La Jolla, California 92037
Electronic mail: crowley.scripps.edu
Telephone: 858/784-9290
Fax: 858/784-8688
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Received on Sun Nov 07 2004 - 22:53:01 PST
