[gmx-users] Probability contact map from g_mdmat

2010-11-12 Thread Ali Naqvi
Dear All, I was playing around with g_mdmat to try and obtain a probability contact plot instead of a mean plot or a frame dump, where it would count the number of times a distance would occur between a range eg. 0-0.4nm. This way the map would show the contact, as well as the propensity to form th

Re: [gmx-users] DSSP error

2010-11-10 Thread Ali Naqvi
May be the directory you are working in is read only, as Justin mentioned this could be a permissions issue. As an example the super computer that I use, cannot write anything in the home directory, therefore all simulations and analysis are done in scratch. Ali -- gmx-users mailing listgmx-

Re: [gmx-users] Parallel do_dssp analysis over mpi?

2010-11-08 Thread Ali Naqvi
Thank you Justin, Mark and Erik for your help. -- gmx-users mailing listgmx-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 li

[gmx-users] Parallel do_dssp analysis over mpi?

2010-11-08 Thread Ali Naqvi
Dear All, I have a trajectory of 100ns and have been trying to analyze it using dssp program. I guess this question also goes for other analysis programs like g_rama, g_rdf and what not. Since the trajectory is big, it takes hours to analyze with do_dssp.. infact 48 hours. I have been able to anal

Re: [gmx-users] Dihedral energy map along two eigenvectors to actual conformations

2010-10-28 Thread Ali Naqvi
Found the answer, thanks to personal communication by Dr. Yuguang Mu. Here it is for anyone interested. Each point on the energy landscape corresponds to a time. This time can be tracked simply by using g_anaeig and using -proj to assign a file name and -first, -last to assign eigenvectors of inte

Re: [gmx-users] Dihedral energy map along two eigenvectors to actual conformations

2010-10-27 Thread Ali Naqvi
> > Yes I have been using the how-to for making the energy landscape. Now I > just need to go backwards. > > Ali Naqvi wrote: > > Hi all, > > I have been following the method outlined by Yuguang Mu to generate the > > energy landscape along two eigenvectors. Ther

[gmx-users] Dihedral energy map along two eigenvectors to actual conformations

2010-10-27 Thread Ali Naqvi
Hi all, I have been following the method outlined by Yuguang Mu to generate the energy landscape along two eigenvectors. There are four minima that I wish to explore. I can determine the points along the vectors that correspond to the conformation, but am unsure of how to use those to obtain the co

[gmx-users] Re: Joining groups for simultaneous analysis in DSSP (Justin A. Lemkul)

2010-10-13 Thread Ali Naqvi
Genius! -- gmx-users mailing listgmx-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 t

[gmx-users] Joining groups for simultaneous analysis in DSSP

2010-10-13 Thread Ali Naqvi
Hi all, I have a 25 amino acid peptide that contains 4 phosphoserines. The forcefield that I have been using is the ff43ap which was modified to include these groups. So during pdb2gmx I have the rtp and itp files for the forcefield in the folder in order for the software to find the appropriate ch