Re: [gmx-users] Re: change in the secondary structure after simulation

2011-01-27 Thread Mark Abraham
On 01/27/11, bharat gupta bharat.85.m...@gmail.com wrote: I actually don't understand exactly what u are asking .. since I am not an expert with gromacs..  Please leave the old context for the discussion in future emails. Only you are paying so much attention to your work that you can be

Re: [gmx-users] Re: change in the secondary structure after simulation

2011-01-27 Thread Justin A. Lemkul
Mark Abraham wrote: On 01/27/11, *bharat gupta * bharat.85.m...@gmail.com wrote: I actually don't understand exactly what u are asking .. since I am not an expert with gromacs.. Please leave the old context for the discussion in future emails. Only you are paying so much attention to

Re: [gmx-users] Re: change in the secondary structure after simulation

2011-01-27 Thread bharat gupta
I generated the secondary structure profile of structure retrieved from the last frame of the simulation ... In that profile those amino acids that are shown as loops in VMD doesnot have any secondary structure assignment ... it means that during simulation the structure got changed some how ...

Re: [gmx-users] Re: change in the secondary structure after simulation

2011-01-27 Thread Justin A. Lemkul
bharat gupta wrote: I generated the secondary structure profile of structure retrieved from the last frame of the simulation ... In that profile those amino acids that are shown as loops in VMD doesnot have any secondary structure assignment ... it means that during simulation the structure

Re: [gmx-users] Re: change in the secondary structure after simulation

2011-01-27 Thread bharat gupta
I used the same .mdp files that are given in the lysozyme tutorial .. Since I was knowing what all parameters to change .. but after energy minimization and equilibration steps , the graphs that I got were fine ... even the rmsd graph of the final structure is also fine .. I have attached the

Re: [gmx-users] Re: change in the secondary structure after simulation

2011-01-27 Thread Mark Abraham
On 27/01/2011 11:11 PM, bharat gupta wrote: I used the same .mdp files that are given in the lysozyme tutorial .. Since I was knowing what all parameters to change .. but after energy minimization and equilibration steps , the graphs that I got were fine ... even the rmsd graph of the final

Re: [gmx-users] Re: change in the secondary structure after simulation

2011-01-27 Thread bharat gupta
I don't think that there is any problem in the structure .. since I am simulating the crystal structure taken from PDB ... and I have checked the structure generated after pdb2gmx and solvation.. Since I am reapeating the simulation again I want to know and I am on energy minimzation step I want

Re: [gmx-users] Re: change in the secondary structure after simulation

2011-01-27 Thread Justin A. Lemkul
bharat gupta wrote: I don't think that there is any problem in the structure .. since I am simulating the crystal structure taken from PDB ... and I have checked the structure generated after pdb2gmx and solvation.. Since I am reapeating the simulation again I want to know and I am on

Re: [gmx-users] Re: change in the secondary structure after simulation

2011-01-27 Thread bharat gupta
I didn't gave any -c flag while md run .. and there is no confout.gro in my folder .. I have attached the graph obtained after energy minimzation .. I want to ask why the graph is not coming like the one shown in the tutorial .. I guess I asked that same question earlier also ?? .. Here is

Re: [gmx-users] Re: change in the secondary structure after simulation

2011-01-27 Thread Justin A. Lemkul
bharat gupta wrote: I didn't gave any -c flag while md run .. and there is no confout.gro in my folder .. I have attached the graph obtained after energy minimzation I've never heard of such a thing. mdrun produces several files automatically: traj.trr, ener.edr, md.log, and confout.gro.

Re: [gmx-users] Re: change in the secondary structure after simulation

2011-01-27 Thread Thomas Piggot
Hi Bharat, If you have used the -deffnm option then the output gro will be called whatever name you used for the -deffnm option and not the default confout.gro. Tom Justin A. Lemkul wrote: bharat gupta wrote: I didn't gave any -c flag while md run .. and there is no confout.gro in my

Re: [gmx-users] Re: change in the secondary structure after simulation

2011-01-26 Thread Mark Abraham
On 01/27/11, bharat gupta bharat.85.m...@gmail.com wrote: Hi,   I did a 3ns simulation of a 236 amino acid protein (GFP, a beta barrel protein), after checking the trajectory it seems that from the first frame itself almost half portion of the two beta strands (159-171, 174-187) of GFP

Re: [gmx-users] Re: change in the secondary structure after simulation

2011-01-26 Thread bharat gupta
I actually don't understand exactly what u are asking .. since I am not an expert with gromacs.. I don't know when is was written .. Here are some lines from the log files of simulation ... Statistics over 151 steps using 31 frames Energies (kJ/mol) AngleProper Dih.