Hi Valentina The first lines of your rtp files should be something like this where you specify the type (function) of the interaction
[ bondedtypes ] ; bonds angles dihedrals impropers all_dihedrals nrexcl HH14 RemoveDih 1 5 9 2 1 3 1 0 John -- View this message in context: http://gromacs.5086.x6.nabble.com/pdb2gmx-tp5008799p5008816.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