Hi, I have a system in which a part of my protein molecule is manually inserted inside a liposome. However, due to high mobility of lipids, the protein is coming out of the liposome. Can you please suggest ways to stabilize the system? One way I thought was to generate a distance restraint between COM of liposome and COM of tip residues of protein inserted inside the liposome. however, the distance restraint explained in gromacs manual were for individual atoms. Please suggest me how to generate distance restraint for COM of group of atoms.
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