<DIV>Hi,</DIV> <DIV> I want to perform simulation of membrane protein .</DIV> <DIV>I try to downloaded the ffgmx_lipids from :<BR><A href="http://www.gromacs.org/topologies/uploaded_force_fields/ffgmx_lipids.tar.gz">http://www.gromacs.org/topologies/uploaded_force_fields/ffgmx_lipids.tar.gz</A></DIV> <DIV>But, corresponding webpage shows error, URL was not found.</DIV> <DIV>Plz attatch this files to my e-mail .</DIV> <DIV>I have another question. What force field have I to use .</DIV> <DIV>Plz send ffgmx_lipids files to me.</DIV> <DIV> <BR></DIV> <DIV> </DIV><p> 
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