Re: [gmx-users] General query regarding MD simulation.

2013-02-15 Thread Justin Lemkul
On 2/15/13 4:00 PM, Abhishek Acharya wrote: On 2/15/13 1:29 PM, Abhishek Acharya wrote: Dear GROMACS Users. Just out of curiosity, i would like to pose a general question here ( i didn't have an idea of any other suitable forum ). My protein active site has a GDP which is coordinated to a

Re: [gmx-users] Changing the non-bonded interaction and charges?

2013-02-15 Thread Justin Lemkul
On 2/15/13 4:20 PM, 라지브간디 wrote: Where can I change the particular Ligand atom ( can be C, O and N...etc) non-bonded interaction value and charges ? In its topology. -Justin -- Justin A. Lemkul, Ph.D. Research Scientist Department of Biochemistry

[gmx-users] Diagonalizing matrix (g_covar)

2013-02-15 Thread SeokYun123
Hello! I'm trying to diagonalize the matrix by using g_covar. However my matrix is too large (5x5) so it won't diagonalize the matrix. Is there a different software or different command that I could try to use in order to diagonalize my matrix as quickly as possible? Thank you. --

[gmx-users] Changing the non-bonded interaction and charges?

2013-02-15 Thread 라지브간디
Where can I change the particular Ligand atom ( can be C, O and N...etc) non-bonded interaction value and charges ? -- 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_List

Re: [gmx-users] General query regarding MD simulation.

2013-02-15 Thread Abhishek Acharya
> > On 2/15/13 1:29 PM, Abhishek Acharya wrote: >> Dear GROMACS Users. >> Just out of curiosity, i would like to pose a general question here ( i >> didn't have an idea of any other suitable forum ). My protein active >> site >> has a GDP which is coordinated to a Mg ion. The Mg ion itself >> co

Re: [gmx-users] Re: Extracting the last frame of simulation into PDB

2013-02-15 Thread Justin Lemkul
On 2/15/13 3:22 PM, zugunder wrote: Oh, forgot about it completely... Thank you very much! BTW, is there any automated way to get rid of solvent molecules in PDB? I just need the structure for further manipulations (like mutations and adding several residues to the end). I do not find any opti

[gmx-users] Re: Extracting the last frame of simulation into PDB

2013-02-15 Thread zugunder
Oh, forgot about it completely... Thank you very much! BTW, is there any automated way to get rid of solvent molecules in PDB? I just need the structure for further manipulations (like mutations and adding several residues to the end). I do not find any options in editconf, deleting manually from

Re: [gmx-users] Extracting the last frame of simulation into PDB

2013-02-15 Thread Justin Lemkul
On 2/15/13 2:08 PM, zugunder wrote: Hi, I bumped into a small problem, I think I missed something... so I am asking for help. I made a simulation of a protein in water (35ns, extended 3 times from initial 10ns) and now I need to get a resulting protein structure in pdb. So I issued: g_trjcon

Re: [gmx-users] General query regarding MD simulation.

2013-02-15 Thread Justin Lemkul
On 2/15/13 1:29 PM, Abhishek Acharya wrote: Dear GROMACS Users. Just out of curiosity, i would like to pose a general question here ( i didn't have an idea of any other suitable forum ). My protein active site has a GDP which is coordinated to a Mg ion. The Mg ion itself coordinates two water

[gmx-users] Extracting the last frame of simulation into PDB

2013-02-15 Thread zugunder
Hi, I bumped into a small problem, I think I missed something... so I am asking for help. I made a simulation of a protein in water (35ns, extended 3 times from initial 10ns) and now I need to get a resulting protein structure in pdb. So I issued: g_trjconv -s md_input_extended_to35ns.tpr -f md_

[gmx-users] General query regarding MD simulation.

2013-02-15 Thread Abhishek Acharya
Dear GROMACS Users. Just out of curiosity, i would like to pose a general question here ( i didn't have an idea of any other suitable forum ). My protein active site has a GDP which is coordinated to a Mg ion. The Mg ion itself coordinates two water molecules and is held in position via non-bonded

[gmx-users] Re: gmx-users Digest, Vol 106, Issue 69

2013-02-15 Thread Christoph Junghans
> Date: Wed, 13 Feb 2013 16:07:53 + > From: Steven Neumann > Subject: [gmx-users] Bond potential of atom groups > To: Discussion list for GROMACS users > Message-ID: > > Content-Type: text/plain; charset=ISO-8859-1 > > Dear Gmx Users, > > I want to create coarse grained model. I need

[gmx-users] Error Esitmation of replicates

2013-02-15 Thread ravi sharma
Dear all, We have run of three temperatures simulation (unfolding) and three replicates of them. we are interested to calculate the experimental errors. anyone has idea how do it? regards, Ravi -- gmx-users mailing listgmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx

Re: [gmx-users] Using double ndx as input ?

2013-02-15 Thread Nuno Azoia
You can not use different index files. You must use different groups in the same index. Merge the 2 ndx into one single file. Cheers Nuno Azoia On Fri, Feb 15, 2013 at 1:58 PM, 라지브간디 wrote: > How do i use two different ndx file ( which has few residues) as a input > to calculate between their d

[gmx-users] Using double ndx as input ?

2013-02-15 Thread 라지브간디
How do i use two different ndx file ( which has few residues) as a input to calculate between their distance using g_dist, g_mindist and so on? Regards Raju -- gmx-users mailing listgmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users * Please search the archive at

Re: [gmx-users][Solved] Removing errors related to missing dihedrals.

2013-02-15 Thread Abhishek Acharya
Dear Justin. The errors have now gone away once I followed your suggestion of entering the missing parameters directly in the topology file. Though there is no explanation as to why it didn't work with ffbonded.itp, I guess sometimes ignorance is bliss ;) Thanks again. Cheers Abhishek > > > On 2/

[gmx-users] Re: Error: Atoms in the .top are not numbered consecutively

2013-02-15 Thread Valentina
Hi Henri, Have you been able to solve this problem? Best, Valentina -- View this message in context: http://gromacs.5086.n6.nabble.com/Error-Atoms-in-the-top-are-not-numbered-consecutively-tp4429383p5005573.html Sent from the GROMACS Users Forum mailing list archive at Nabble.com. -- gmx-use

Re: [gmx-users] Bond potential of atom groups

2013-02-15 Thread Steven Neumann
I have VOTCa already installed. Thank you for this. Steven On Wed, Feb 13, 2013 at 10:34 PM, Broadbent, Richard wrote: > Dear Steven, > > There is no universal method to do this and many people spend years > studying the various techniques. However, > http://pubs.acs.org/doi/abs/10.1021/ct900369

Re: [gmx-users] RE: Stopping protein jumping inside box?

2013-02-15 Thread Mark Abraham
On Thu, Feb 14, 2013 at 6:13 AM, 라지브간디 wrote: > Dear gmx, > > I've used -pbc nojump options but still the protein goes all around the > box within 4ns. Any specific command to avoid this ? It's a myoglobin > protein! > The usual approach is here: http://www.gromacs.org/Documentation/Terminology/