Hi

GROMACS manual pp. 116.

Why should you want to setup a constant pulling force? The force is the information, you want to derive with pulling.

You have to setup a spring constant and the pull velocity; see the manual for a howto. With these parameters and the positions in the output file you can derive the force-profile.

regards

Maik Goette, Dipl. Biol.
Max Planck Institute for Biophysical Chemistry
Theoretical & computational biophysics department
Am Fassberg 11
37077 Goettingen
Germany
Tel.  : ++49 551 201 2310
Fax   : ++49 551 201 2302
Email : mgoette[at]mpi-bpc.mpg.de
        mgoette2[at]gwdg.de
WWW   : http://www.mpibpc.gwdg.de/groups/grubmueller/


Hua Li wrote:
Dear all,
 Would anybody tell me how to do it?
I don't understand clearly what's meaning of those parameters in pull.ppa with AFM otion?
Thanks a lot!

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