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From: Axel Kohlmeyer (akohlmey_at_gmail.com)
Date: Sun Dec 26 2010 - 09:25:08 CST
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On Sun, Dec 26, 2010 at 9:11 AM, leila karami <karami.leila1_at_gmail.com> wrote:
> Dear VMD users
>
> I have a initial pdb file containing protein, dna and water molecules.
> I need to psf file. I want to use amber03 force field to obtain psf file.
>
> is it possible?
>
> which of autopsf and psfgen is more suitable for creating of psf file?
unless you haven't noticed, autopsf is just a front end and
GUI interface to psfgen that automates common tasks
for well behaved .pdb files.
if you do something more complex, writing a custom psfgen
script is probably more adequate.
in both cases, psfgen is going to do the job, so your question
would have to be: is my pdb file suitable for processing with
autopsf instead of psfgen directly?
only you can answer that.
in any case, you first need to find a topology
and parameter file that has the desired force
field in charmm format. to the best of my knowledge,
VMD only ships with the cornell (94) version.
axel.
> any help will highly appreciated.
>
> --
>
> Leila Karami
> Ph.D. student of Physical Chemistry
> K.N. Toosi University of Technology
> Theoretical Physical Chemistry Group
>
-- Dr. Axel Kohlmeyer akohlmey_at_gmail.com http://goo.gl/1wk0 Institute for Computational Molecular Science Temple University, Philadelphia PA, USA.
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