How to add Cadmium parameters in amber OL15 nucleic forcefield?

User discussions
1

GROMACS version: 2021.4
GROMACS modification: Yes/No
Dear all, I am using OL15 amber forcefield for my DNAzyme molecule and I need to add Cd2+ ion instead of Mg2+ ion. In OL15 forcefield there are no parameters for Cadmium ion. Now, I want to know how to add Cadmium ions parameters in this forcefield and then use them in my MD simulation.