Re: [AMBER] How to use AMBER parameters for modified amino acids

From: David A Case <case.biomaps.rutgers.edu>
Date: Thu, 21 Mar 2013 08:29:14 -0400

On Wed, Mar 20, 2013, Symon Gathiaka wrote:
>
> I have amber parameters (from a paper) for a modified amino acid in a
> protein of interest but could not find any help from the tutorials how
> to go about creating the inputs for sander.
>
> What am asking is, since i have the library file, how do i go about
> creating the force field modification file (.frcmod) to load into tleap
> considering that its only for one modified residue in a peptide?

The format of the frcmod file is described here:

  http://ambermd.org/formats.html

You make a frcmod file by hand. LEaP will complain if something is missing.
You can also use ParmEd to examine the resulting prmtop file to make sure that
you have what you want.

....dac


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Received on Thu Mar 21 2013 - 06:00:03 PDT
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