Arindam Ganguly wrote:
Hi Steffen,
Thanks very much for the prompt reply. i made the changes as mentioned
such that my popc.top looks like this :-
#include "ffgmx.itp"
#include "lipid.itp"
#include "popc.itp"
#include "ffgmx2nb.itp"
#include "ffgmx2bon.itp"
however is still get the same message "Fatal error: Bonded/nonbonded
atom type 'LP2' not found!".
i forgot to mention one thing in my earlier mail that the ffgmx.atp
file provided with originally from GROMACS , i replaced the contents
of it by the contents present in the ffgmx.atp file present in the
ffgmx_lipids folder as downloaded from the Gromacs website.
my understanding is this shouldn;t cause the problem since the
orinigal ffgmx.atp file ( as provided by gromacs) doesn;t contain all
the atom types. in fact when i compared the both files i found that
the ffgmx.atp file (from ffgmx_lipids folder ) has the following extra
entries which were required for the lipid simulation. i am kind of
confused as to where i am committig the mistake. plz help. thanks.
Arindam Ganguly
Hm, strange, but OK, another idea: I just saw that your setup
essentially trippels the callups for the necessary forcefield
parameters: You can not only transfer the atomtypes to ffgmxbon.itp, but
the rest of the included parameters into ffgmxbon.itp and ffgmxnb.itp as
well, so you won't have to call lipid.itp. Next thing: why are you
including ffgmx2nb.itp and ffgmx2bon.itp explicitly? They are already
set up by calling ffgmx.itp in the beginning, you're just overriding
everything again. So: after modifying lipid.itp, you should do fine with
#include "ffgmx.itp"
#include "popc.itp"
Bye
Steffen
--
Dipl.-Chem. Steffen Wolf
Department of Biophysics
University of Bochum
ND 04/67
44780 Bochum
Germany
Tel: +49 (0)234 32 28363
Fax: +49 (0)234 32 14626
E-Mail: [EMAIL PROTECTED]
Web: http://www.bph.rub.de
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