From: zeynab mohamad hoseyni (zmhoseyni_at_yahoo.com)
Date: Sun Feb 16 2014 - 12:00:30 CST
Dear All,
I followed NAMD membrane tutorial to align my protein with the membrane and producing two temporary files for
each of membrane and protein. Then I tried to combine the produced temporary files into one set of psf and pdb files
using the following commands as it is written in the tutorial:
% mol delete all
% package require psfgen
1.6
% resetpsf
psfgen) clearing structure, preserving topology and aliases
% readpsf membrane.psf
psfgen) reading structure from psf file membrane.psf
psfgen) psf file does not contain cross-terms
I don't understand what is the meaning of the message "psf file does not contain cross-terms". I used CHARMM36 to produce
the lipid bilayer and I expect it contains the cross terms as well. Could any body help to understand what is wrong?
Thanks,
Zeynab
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