Hi GROMACS users,I've two questions. My simulation box contains a DMPC lipid bilayer, water molecules, intramembrane protein and a ligand protein. The net charge of the system is zero. Is it necessary to add ions to this system?
The intramembrane protein (made of two chains) has a net charge of -1 and the ligand protein has a net charge of +1, thus the net charge of zero.
The next question is too naive, but if the ions are needed, What ion is better for the dynamics K or Na?
Much obliged. Eduardo.
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