[gmx-users] g_membed itp file

[h.alizadeh at znu.ac.ir]

Dear GROMACS users,
I'm a new GROMACS user and I would like to apologize for my basic question.
I want to use g_membed to insert protein in membrane according to Wolf's
paper manual. I have the pdb, mdp and top files in my directory, but when I
enter the command

grompp -f sample.mdp -c merged.gro -p merged.top -o input.tpr

I face with this fatal error:
Fatal error:
Topology include file "ffoplsaalipid.itp" not found

Now I want to know how can I create this itp file?
Best wishes,