[gmx-users] grompp , lipid parameters, error
senthilk at engin.umich.edu
Thu Dec 5 19:44:17 CET 2002
I am still having some difficulties with grompp and tieleman's lipid.itp
First, I added the 11 atomtypes into the ffgmxnb.itp . then i added the
nonbonded parameters and so on....
then I added the dihedral lines to ffgmxbon.itp
I think that I did these things correctly. I am pretty sure about this.
This allows me to get rid of the lipid.itp file.
Now,my simulation topology file looks as follows
pope + water +magainin
now i run
grompp -appropriate options,
fatal error: Atomtype 'LNL' not found.
I do not understand why this happens since atomtype LNL is defined in
ffgmx.itp. I had added the 11 new atomtypes from lipid.itp (of which LNL
is one) right behind the default 47 atomtpyes in ffgmx.
and btw, LNL is the first "non-default" residue grompp comes across in
the input gro file.
I do not know if I am doing something obviously wrong...
something to do with the order of file inclusions?
I have tried a whole bunch of things only get even more complicated
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