[gmx-users] error using grompp: number of coordinates in coordinate file does not match topology

[reisingere at rostlab.informatik.tu-muenchen.de]

Hi everybody,
I am going through the tutorial for membrane protein simulation which is
offered by gromacs.
I did everything just like it is described in the tutorial but when I want
to do the minimization in Step 3 after packing the lipids around the
protein I always get the error the
"number of coordinates in coordinate file (system_inflated.gro, 9900)
             does not match topology (topol.top, 3800)"
I understand why it is like that because I just append the membrane to the
protein file but how can I also change the topology file?


http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin/gmx-tutorials/membrane_protein/03_solvate.html


Bests, Eva