Marcelo Fabricio Masman skrev:
Dear All.
Is there any tool (or set of tools) in GROMACS which allows me to calculate #H2O vs time inside a pocket or in between two fragment of a protein?
Any help and/or hint will be fully appreciated.
Marcelo
If you define an indexgroup for the pocket you could find the number of water molecules within any given distance with g_bond -contact. Between two protein fragments is a bit harder, because such a region is a bit ill defined.

/Erik

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Erik Marklund, PhD student
Laboratory of Molecular Biophysics,
Dept. of Cell and Molecular Biology, Uppsala University.
Husargatan 3, Box 596,    75124 Uppsala, Sweden
phone:    +46 18 471 4537        fax: +46 18 511 755
[EMAIL PROTECTED]    http://xray.bmc.uu.se/molbiophys

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