For sure there are a lot of variable playing here, I only ask about the MET for curiosity, because I am a beginner in this kind of things we can say...
I do : pdb2gmx -f pdb.pdb -p pdb.top -o pdb.gro -water spc -his -ter -posrefc 10000. I don't specify nothing as separate chains or so on. I will take into account your suggestions. I will also take into account the PDB format -- View this message in context: http://gromacs.5086.x6.nabble.com/Problem-with-Amber99SB-ILDN-ff-tp5009641p5009648.html Sent from the GROMACS Users Forum mailing list archive at Nabble.com. -- gmx-users mailing list gmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/Search before posting! * Please don't post (un)subscribe requests to the list. Use the www interface or send it to gmx-users-requ...@gromacs.org. * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists