GROMACS version:
GROMACS modification: Yes/No
Here post your question
Residue ‘TPO’ not found in residue topology database.May I ask how this should be modified?
This is one of the most frequently asked questions, and as such it’s also answered in the user guide.
Hello, may I ask if you can provide more detailed steps?
It’s hardly possible to give more detailed steps than what is already explained at the link above, without knowing what system you’re working with or what you’re trying to achieve. If you’re trying to parametrize e.g. a protein-ligand system, or simply a small organic molecule in water, tools like CHARMM-GUI’s input generator, LigParGen or acpype usually come in handy.