Hi,

we have terrible problems to get reasonable results from BAR free energy calculations. We basically follow Justin's tutorial for solvation of methanol, ethanol, diethyl-ether and neopentane in water using OPLS but get very strange results. The free energy curves are here:

http://folding.bmc.uu.se/images/koko.jpg

Molecule  Energy Exper
Methanol     -8    -21
Ethanol      -9    -21
Diethylether -11    -7
Neopentane   -10   +11

any clue?
--
David van der Spoel, Ph.D., Professor of Biology
Dept. of Cell & Molec. Biol., Uppsala University.
Box 596, 75124 Uppsala, Sweden. Phone:  +46184714205.
sp...@xray.bmc.uu.se    http://folding.bmc.uu.se
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