I also included the position restraints as follows in my top file: ; Include chain topologies #include "topol_Protein_chain_A.itp" #ifdef POSRE #include "backbone_posre.itp" #include "strong_posre.itp" #endif #include "topol_Protein_chain_B.itp" #ifdef POSRE #include "strong_posre.itp" #include "backbone_posre.itp" #endif
As I described earlier, I included position restraints of backbone in top file and also added define = -DPOSRES to minim.mdp file. But it seems that the position restrains have not been included. Would you please suggest me how I can apply position restraints effectively? Thanks in advance. Your suggestions would be appreciated. Shima ---------- Forwarded message ---------- From: Shima Arasteh <shima_arasteh2...@yahoo.com> Date: Fri, 15 Mar 2013 05:50:09 -0700 (PDT) Subject: Fw: Fwd: [gmx-users] position restraints To: Discussion list for GROMACS users <gmx-users@gromacs.org> Dear users, Although I put the position restraints on backbone, I get RMSD around 0.2 nm. Is it usual? This deviation is just for a minimization step only. I' m on doubt about keeping the backbone in a fix secondary structure. I' d prefer to restraint the backbone completely. Is it possible? Thanks in advance. Restraints allow, by definition, for slight deviations. Erik * Please don't post (un)subscribe requests to the list. Use thewww interface or send it to gmx-users-requ...@gromacs.org. Dear gmx users, I want to use restraints on backbone of my protein to keep its secondary structure during minimization and equilibration steps. To do so, I generated backbone-restrain.itp and then included it to top file. Next, added define = -DPOSRES to minim.mdp file. After minimization, when I check the minimization output file, I saw that the backbone of input and output files are not exactly the same. Is there any step which I have not done to set the restraints correctly? Thanks in advance. Sincerely, Shima -- 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 -- 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