Dear Mark Thank you for your previous help
With your Help I Have successfully Constructed .top and .gro for my cyclic peptide After That i Have solvated and added ions . . But when I do Energy Minimization My Molecule after Energy Minimization ( I have Visualized .gro file in VMD) The bond Between N atom of first Residue ( N-terminal) and C atom of last residue (C-terminal end) Has become Broken . How to Avoid this ? Thanks in Advance -- gmx-users mailing list gmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/Search before posting! * Please don't post (un)subscribe requests to the list. Use the www interface or send it to gmx-users-requ...@gromacs.org. * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists