If anyone have gromacs tutorial to a new residue to the topology. The protein which I am working on has 4 NAG (N-acetyl Glucosamine) and 1 ALS (2-amino 3-oxopropionic acid). These residues were not found by Gromacs because these molecules are not present in the residue topology database.
I need a tutorial to modify these database files and run the simulation with these molecules.
Thanks