[gmx-users] How to specify .mdp file for position restrained simulation?

[Mark Abraham]

jantonioms J. A. Mondragon S wrote:
> you need to run genpr to generate a restrained position file
> posresfile.itp with a determined force constant value fc and include
> the name file in *.mdp file using define label, for example, run
> 
> genpr -f my_molecule.pdb -o posresfile.itp -fc 20
> 
> edit *.mdp to include
> 
> cpp = /usr/bin/cpp
> .
> .
> .
> define= -DPOSRESFILE

Whether someone will "need" to use genpr depends what they want to do. 
If they're using pdb2gmx and want default PR, then they don't need the 
above.

Mark