NVT steps Command : gmx grompp -f NVT.mdp -c EM.gro -p topol.top -n index.ndx -o nvt.tpr

Error:

Fatal error:

[ file strong_posre_make_ligand.itp, line 5 ]:

Atom index (4579) in position_restraints out of bounds (1-43).

This probably means that you have inserted topology section "position_restraints"

in a part belonging to a different molecule than you intended to.

In that case move the "position_restraints" section to the right molecule.

For more information and tips for troubleshooting, please check the GROMACS

website at http://www.gromacs.org/Documentation/Errors

Please help me out for this issue. I will be thankful to you.

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