Re: Cyclopeptide: connectivity between the first and last residues

From: Jerome Henin (
Date: Mon Sep 29 2008 - 17:31:30 CDT

On Mon, Sep 29, 2008 at 4:36 PM, David Tanner <> wrote:
> Shirley,
> 1) You are allowed to edit your .psf file.

You certainly are, but I in most cases, I would recommend against it.
Instead, you can look up the "patch" statement of psfgen, as well as
the patch residues (PRES) LIG1, LIG2 and LIG3 in the charmm topology
file for proteins (assuming that you use charmm).


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