[gmx-users] radial distribution analysis-sq option

2013-02-14 Thread Rajalakshmi.C
hi all, i have done scattering function analysis using g_rdf command for polymer-solvent system. i got the plot of scattering vector q(1/nm) vs intensity .now i want to convert the scattering vector (q) value in to distance i.e. 'd' the fundamental polymer books have the relation for light scatteri

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

2013-02-14 Thread Justin Lemkul
On 2/14/13 4:15 PM, Abhishek Acharya wrote: Hello Justin Thank you very much for your effort and help. I will try adding new parameter corresponding to the errors. Meanwhile just out of curiosity and possible need, what should be done in case no matching parameters are found for the missing

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

2013-02-14 Thread Justin Lemkul
On 2/14/13 11:54 AM, Abhishek Acharya wrote: Hello Justin Thank you very much for your effort and help. I will try adding new parameter corresponding to the errors. Meanwhile just out of curiosity and possible need, what should be done in case no matching parameters are found for the missing di

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

2013-02-14 Thread Justin Lemkul
Please don't reply to the entire digest. Copy and paste relevant portions and omit the rest. On 2/14/13 11:54 AM, 라지브간디 wrote: I have tried -pbc nojump, and other options given in that link but still my protein gets jumped! Plz guide me, how to stop this ? The suggested trjconv workflow

Re: [gmx-users] Re: Problem with dihedral restraint in gromacs 4.6

2013-02-14 Thread Mark Abraham
On Mon, Feb 11, 2013 at 5:20 PM, Landraille wrote: > Last question (I hope). > > How can I choose the force constant? > > Indeed for the version 4.5, the force constant is defined by the > option dihre_fc in the mdp input file. After this force is multiply by > kfac contained in the dihedral_secti

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

2013-02-14 Thread Abhishek Acharya
> Hello Justin > Thank you very much for your effort and help. I will try adding new > parameter corresponding to the errors. Meanwhile just out of curiosity and > possible need, what should be done in case no matching parameters are > found for the missing dihedrals? I see that there are 6 field

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

2013-02-14 Thread 라지브간디
I have tried -pbc nojump, and other options given in that link but still my protein gets jumped! Plz guide me, how to stop this ? - orig.Message - From : gmx-users-requ...@gromacs.org To : gmx-users@gromacs.org Sent date : 2013-02-14 18:42 Subject : gmx-us

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

2013-02-14 Thread Abhishek Acharya
Hello Justin Thank you very much for your effort and help. I will try adding new parameter corresponding to the errors. Meanwhile just out of curiosity and possible need, what should be done in case no matching parameters are found for the missing dihedrals? I see that there are 6 fields in the dih

Re: [gmx-users] Implicit solvent

2013-02-14 Thread Justin Lemkul
On 2/14/13 11:02 AM, Sebastien Cote wrote: Dear Justin, Thank you very much for your answer. I did not take this as a criticism of implicit solvent model. I was just wondering what was the origin of the limitations you were speaking of. I did some small implicit solvent simulations, but I mus

RE: [gmx-users] Implicit solvent

2013-02-14 Thread Sebastien Cote
Dear Justin, Thank you very much for your answer. I did not take this as a criticism of implicit solvent model. I was just wondering what was the origin of the limitations you were speaking of. I did some small implicit solvent simulations, but I must say that I have not thoroughly looked at th

Re: [gmx-users] Implicit solvent

2013-02-14 Thread Justin Lemkul
On 2/14/13 10:21 AM, Sebastien Cote wrote: Dear Justin, I am not sure to follow you. You essentially say that it is better to avoid using implicit solvent i.e. the generalized Born-formalism implemented in GROMACS? For the case of optimizing and relaxing a system (expecting short MD), I agre

RE: [gmx-users] Implicit solvent

2013-02-14 Thread Sebastien Cote
Dear Justin, I am not sure to follow you. You essentially say that it is better to avoid using implicit solvent i.e. the generalized Born-formalism implemented in GROMACS? For the case of optimizing and relaxing a system (expecting short MD), I agree that it might be preferable to use explicit

Re: [gmx-users] installation

2013-02-14 Thread David Sáez
Thanks Justin, I'm gonna take your advice. On Thu, Feb 14, 2013 at 11:43 AM, Justin Lemkul wrote: > > > On 2/14/13 9:40 AM, David Sáez wrote: > >> Erik, thanks for your answer. I typed "which mdrun" and I got this output: >> >> *~$ which mdrun* >> */usr/local/gromacs/bin/mdrun* >> >> >> Then, I

Re: [gmx-users] installation

2013-02-14 Thread Justin Lemkul
On 2/14/13 9:40 AM, David Sáez wrote: Erik, thanks for your answer. I typed "which mdrun" and I got this output: *~$ which mdrun* */usr/local/gromacs/bin/mdrun* Then, I typed just "mdrun" and I got this: *~$ mdrun* * * * :-) G R O M A C S (-:* * * *

Re: [gmx-users] installation

2013-02-14 Thread David Sáez
Erik, thanks for your answer. I typed "which mdrun" and I got this output: *~$ which mdrun* */usr/local/gromacs/bin/mdrun* Then, I typed just "mdrun" and I got this: *~$ mdrun* * * * :-) G R O M A C S (-:* * * * Green Red Orange Magenta Azure Cyan

Re: [gmx-users] different springs - WHAM

2013-02-14 Thread Erik Marklund
On Feb 14, 2013, at 2:01 PM, Justin Lemkul wrote: On 2/13/13 5:23 PM, Steven Neumann wrote: On Tue, Feb 12, 2013 at 5:01 PM, Justin Lemkul wrote: On 2/12/13 9:57 AM, Steven Neumann wrote: On Tue, Feb 12, 2013 at 2:53 PM, Justin Lemkul wrote: On 2/12/13 9:40 AM, Steven Neumann w

[gmx-users] GROMOS54A8 parameters in GROMACS format

2013-02-14 Thread ABEL Stephane 175950
Thanks Berk, I have found the script, I will try them Best Stephane Message: 4 Date: Thu, 14 Feb 2013 13:53:56 +0100 From: Berk Hess Subject: RE: [gmx-users] Re: GROMOS54A8 parameters in GROMACS format To: Discussion list for GROMACS users Message-ID:

Re: [gmx-users] Distance restraints

2013-02-14 Thread Justin Lemkul
On 2/14/13 8:35 AM, Divya Sunil wrote: Hello all, I have been trying to apply distance restraints on my protein. I prepared distance restrains using make index and added to topology file. I did it just after executing pdb2gmx. Is this the correct procedure to apply distance restraints? make

Re: [gmx-users] md with multiple ligands

2013-02-14 Thread Justin Lemkul
On 2/14/13 1:20 AM, Ansuman Biswas wrote: Original Message Subject: Re: gmx-users Digest, Vol 106, Issue 68 From:ansuman@localhost Date:Thu, February 14, 2013 10:16 am To: gmx-users@gromacs.org --

Re: [gmx-users] Implicit solvent

2013-02-14 Thread Justin Lemkul
On 2/14/13 1:01 AM, Алексей Раевский wrote: Hi, dear developers! I want to ask you abou dynamics in implicit solvent. I have a complex of animal protein - dimer/trimer. After modeling by homology I have built another one from the plant organism. Dimer/trimer was constructed with superposition

Re: [gmx-users] different springs - WHAM

2013-02-14 Thread Justin Lemkul
On 2/13/13 5:23 PM, Steven Neumann wrote: On Tue, Feb 12, 2013 at 5:01 PM, Justin Lemkul wrote: On 2/12/13 9:57 AM, Steven Neumann wrote: On Tue, Feb 12, 2013 at 2:53 PM, Justin Lemkul wrote: On 2/12/13 9:40 AM, Steven Neumann wrote: Dear Gmx Users, I know it is possible to combi

RE: [gmx-users] Re: GROMOS54A8 parameters in GROMACS format

2013-02-14 Thread Berk Hess
Hi, There are two scripts make_gromos_rtp in the scripts directory which were used to convert Gromos AA topologies to rtp entries. Cheers, Berk > From: stephane.a...@cea.fr > To: gmx-users@gromacs.org > Date: Thu, 14 Feb 2013 11:34:59 + > Subject:

[gmx-users] Re: GROMOS54A8 parameters in GROMACS format

2013-02-14 Thread ABEL Stephane 175950
Hello, Yeap, I have seen the links on ATB. Indeed, the conversion of the bonded terms (in this file 54a8.ifp ?) will be not too hard, but it is not the case for the AA topology where several changes were done. So any help will be appreciate.. Stephane -- M

Re: [gmx-users] Error in BlueGene

2013-02-14 Thread Cintia C. Vequi-Suplicy
Hello, I am writing just to tell how the problem was solved. I contact a person that works with the BlueGene cluster and he installed the Gromacs 4.6 in the cluster. And all my problems were solved. I did not get the same error over and over again. Apparently, it was some problem with the 4.

[gmx-users] Re: make a movie from vmd

2013-02-14 Thread Hamid Mosaddeghi
You can use VideoMach software for this purpose. this software recommended by VMD. -- View this message in context: http://gromacs.5086.n6.nabble.com/make-a-movie-from-vmd-tp5004548p5005546.html Sent from the GROMACS Users Forum mailing list archive at Nabble.com. -- gmx-users mailing list

Re: [gmx-users] GROMOS54A8 parameters in GROMACS format

2013-02-14 Thread lloyd riggs
Dear Stephane Abel, Theres a link I on the gromacs web site to ATB, or you can google it. If it is not in Gromacs format you can just write a couple 6 liner scripts to re-format it by parsing into the gromacs format, Stephan Watkins Original-Nachricht > Datum: Wed, 13 Feb 20

Re: [gmx-users] Number of interactions per residue

2013-02-14 Thread Kavyashree M
Thank you! On Thu, Feb 14, 2013 at 3:38 PM, Erik Marklund wrote: > Perhaps g_hbond -contact will do what you want. > > Erik > > > On Feb 14, 2013, at 10:42 AM, Kavyashree M wrote: > > Dear users, >> >> How can I get the number of interactions of each residue >> within a cut off as a function of

Re: [gmx-users] Number of interactions per residue

2013-02-14 Thread Erik Marklund
Perhaps g_hbond -contact will do what you want. Erik On Feb 14, 2013, at 10:42 AM, Kavyashree M wrote: Dear users, How can I get the number of interactions of each residue within a cut off as a function of time. just like g_saltbr writes with the option -sep. I tried using g_mdmat but it give

Re: [gmx-users] Resuming of the trajectory calculation

2013-02-14 Thread Felipe Pineda, PhD
Thank the documentation, which you should probably read more carefully the next time. Reading comprehension and discrete thinking are key. On 02/14/2013 10:59 AM, James Starlight wrote: Felipe, thats works perfect! thank you! James 2013/2/14 Felipe Pineda, PhD : It's all about comprehendin

Re: [gmx-users] Resuming of the trajectory calculation

2013-02-14 Thread James Starlight
Felipe, thats works perfect! thank you! James 2013/2/14 Felipe Pineda, PhD : > It's all about comprehending reading. If you look carefully at the > documentation again, you will find: > > tpbconv -s previous.tpr -extend timetoextendby -o next.tpr > mdrun -s next.tpr -cpi previous.cpt > > What i

[gmx-users] Number of interactions per residue

2013-02-14 Thread Kavyashree M
Dear users, How can I get the number of interactions of each residue within a cut off as a function of time. just like g_saltbr writes with the option -sep. I tried using g_mdmat but it gives an average contact map. Thank you Kavya -- gmx-users mailing listgmx-users@gromacs.org http://lists.

Re: [gmx-users] Resuming of the trajectory calculation

2013-02-14 Thread Felipe Pineda, PhD
It's all about comprehending reading. If you look carefully at the documentation again, you will find: tpbconv -s previous.tpr -extend timetoextendby -o next.tpr mdrun -s next.tpr -cpi previous.cpt What it's the right thing to do. On 02/14/2013 10:11 AM, James Starlight wrote: I've already tr

Re: [gmx-users] Resuming of the trajectory calculation

2013-02-14 Thread James Starlight
I've already tried to do it in accordance to that instructions! firstly I've created new tpr file where I changed only duration of my simulation grompp -f ./mdps/md_sd.mdp -n index -c old.tpr -o new.tpr then I've launched mdrun mdrun -v -s new.tpr -cpi old.cpi -deffnm old -append where old is

Re: [gmx-users] Resuming of the trajectory calculation

2013-02-14 Thread Felipe Pineda, PhD
Very frequently it helps just to do some searches by your own and read _carefully_ the documentation: http://www.gromacs.org/Documentation/How-tos/Extending_Simulations?highlight=extend On 02/14/2013 08:13 AM, James Starlight wrote: Dear Gromacs Users! I have completed 100ns md trajectory. I