<div>Hi all!!!</div>
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<div>I am trying to run a MD simulation with part of my system frozen. I was looking into the manual but I couldn't find the answer since the manual says the way for freezing complete groups. I would like to freeze only a part of my protein and permit the completed optimization of the rest. For example, my protein group has 5 protein chains with 42 residues each of them. I would like to freeze (in all directions) the alfa Carbon atoms for residues 18-42 for each chain. Does somebody know if it is possible to do such thing with GROMACS? Can somebody help me?
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<div>Thanks a lot, in advance</div>
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<div>Marcelo</div>