[gmx-users] How to set constant pulling force in pull.ppa with AFM option?

Maik Goette mgoette at mpi-bpc.mpg.de
Mon May 15 16:03:02 CEST 2006


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.


Maik Goette, Dipl. Biol.
Max Planck Institute for Biophysical Chemistry
Theoretical & computational biophysics department
Am Fassberg 11
37077 Goettingen
Tel.  : ++49 551 201 2310
Fax   : ++49 551 201 2302
Email : mgoette[at]mpi-bpc.mpg.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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