[gmx-users] Distance travelled from time 0

2013-06-20 Thread Natalie Stephenson
Hi guys, What is the best way of calculating how far a residue has traveled from its starting position during a simulations? Thanks Natalie -- gmx-users mailing listgmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users * Please search the archive at

[gmx-users] FW: Myristic Acid Simulations

2013-05-07 Thread Natalie Stephenson
Hi, I know there have been many threads talking about parameterization of novel molecules for simulations within gromacs, but I just wanted to know if anyone had done any parameterization of myristic acid, as I intend to begin simulations on a protein that is myristolated and figured I'd

RE: [gmx-users] Potential Energy Landscape

2011-11-29 Thread Natalie Stephenson
] Potential Energy Landscape On 21/11/2011 10:36 PM, Natalie Stephenson wrote: I have performed force pulling experiments on a protein with both Gromacs MD simulations and experimentally with AFM. The problem I'm facing with the data is the difference between the loading rates of the two approaches

RE: [gmx-users] Potential Energy Landscape

2011-11-21 Thread Natalie Stephenson
to experimental data dispite the loading rate differences would be GREATLY appreciated!! Thanks once again!! Natalie Natalie Stephenson, B.Sc PhD Research Associate Manchester Interdisciplinary Biocentre 131 Princess Street Manchester M1 7DN

RE: [gmx-users] Potential Energy Landscape

2011-11-14 Thread Natalie Stephenson
From: gmx-users-boun...@gromacs.org [gmx-users-boun...@gromacs.org] on behalf of Justin A. Lemkul [jalem...@vt.edu] Sent: 21 October 2011 13:25 To: Discussion list for GROMACS users Subject: Re: [gmx-users] Potential Energy Landscape Natalie Stephenson

RE: [gmx-users] Potential Energy Landscape

2011-10-21 Thread Natalie Stephenson
the least in the last 7 years ... so getting back into it is proving more confusing! Natalie Natalie Stephenson, B.Sc PhD Research Associate Manchester Interdisciplinary Biocentre 131 Princess Street Manchester M1 7DN x65816

[gmx-users] Potential Energy Landscape

2011-10-12 Thread Natalie Stephenson
I was recently told in passing that it would be possible to construct a 'potential energy landscape' from the simulations I have performed. This way I could remove any loading rate differences between simulations and experimental force experiments I've been performing ... however I cannot find

[gmx-users] quick question about direction_periodic

2011-10-04 Thread Natalie Stephenson
pulling on both termini if this is in fact the case? Thanks Natalie Natalie Stephenson, B.Sc PhD Research Associate Manchester Interdisciplinary Biocentre 131 Princess Street Manchester M1 7DN x65816

[gmx-users] Pull Simulation: Force spike on F vs X output and extension stall

2011-08-16 Thread Natalie Stephenson
the fact that this domain is very firmly in contact with it's adjacent domain? Thank you for your help with this matter. Kind regards, Natalie Natalie Stephenson, B.Sc PhD Research Associate Manchester Interdisciplinary Biocentre 131 Princess

[gmx-users] Specify run time

2011-05-20 Thread Natalie Stephenson
. Is this possible? Thanks Natalie Natalie Stephenson, B.Sc PhD Research Associate Manchester Interdisciplinary Biocentre 131 Princess Street Manchester M1 7DN x65816 -- gmx-users mailing listgmx-users

RE: [gmx-users] Specify run time

2011-05-20 Thread Natalie Stephenson
Thanks loads! That helps loads! Natalie Natalie Stephenson, B.Sc PhD Research Associate Manchester Interdisciplinary Biocentre 131 Princess Street Manchester M1 7DN x65816

[gmx-users] Command Not Found

2011-05-16 Thread Natalie Stephenson
to be functioning fine. What is it I've missed? Can anyone shed any light on my (probably completely stupid) problem?! Thanks loads, Natalie Natalie Stephenson, B.Sc PhD Research Associate Manchester Interdisciplinary Biocentre 131 Princess Street

RE: [gmx-users] Command Not Found

2011-05-16 Thread Natalie Stephenson
...@gromacs.org] on behalf of Justin A. Lemkul [jalem...@vt.edu] Sent: 16 May 2011 15:56 To: Discussion list for GROMACS users Subject: Re: [gmx-users] Command Not Found Natalie Stephenson wrote: Hi All, Sorry to bug you all about this - it's been mentioned a few times but I can't find an answer

RE: [gmx-users] Command Not Found

2011-05-16 Thread Natalie Stephenson
Subject: Re: [gmx-users] Command Not Found Natalie Stephenson wrote: Sorry for the confusion - didn't mean I'd used a wildcard when typing the commands ... just meant I get that response for both commands. They're an add on created from a the Molecular BioMechanics group (http://projects.eml.org

[gmx-users] Using Gromacs on Condor

2011-04-27 Thread Natalie Stephenson
Hi, I was wondering if anyone new a way to run mdrun commands through a condor system. I've been told by the people that run our system that unless I can split it into seperate threads then I would not be able to run it as a job, because it would just get stopped in the morning - which from

[gmx-users] Problems with pull simulation output - VMD shows broken up groups

2011-03-03 Thread Natalie Stephenson
Hi, I've been having a problem with the pull simulation. After the simulation is complete, I use trjconv to separate the pull file into seperate .gro's and load this into VMD. When I view it in VMD as the 'video' continues parts of amino acids within the protein structure seem to jump a

RE: [gmx-users] Problems with pull simulation output - VMD shows broken up groups

2011-03-03 Thread Natalie Stephenson
Subject: Re: [gmx-users] Problems with pull simulation output - VMD shows broken up groups Justin A. Lemkul wrote: Natalie Stephenson wrote: Hi, I've been having a problem with the pull simulation. After the simulation is complete, I use trjconv to separate the pull file into seperate

RE: [gmx-users] Invalid atom number 101717 in indexfile

2010-12-12 Thread Natalie Stephenson
of Justin A. Lemkul [jalem...@vt.edu] Sent: 10 December 2010 13:52 To: Gromacs Users' List Subject: Re: [gmx-users] Invalid atom number 101717 in indexfile Natalie Stephenson wrote: Hi, There are 101987 atoms in my system (2206 from my protein and the rest from solvent and ions). The index file

[gmx-users] Invalid atom number 101717 in indexfile

2010-12-10 Thread Natalie Stephenson
Hi, I've come across this error when performing grompp of my pull files before an afm simulation. I'm not really sure I understand why it's saying it ... I've checked over my index file and the atom is part of the solvent I've solvated the box with during genbox commands. The input on the

[gmx-users] Pull simulation odditites when viewed in VMD

2010-12-09 Thread Natalie Stephenson
Hey, I've been performing a pull simulation of a protein, all seems to work fine however after I convert the .xtc file into seperate .gro files and load those into VMD to visualise the simulation something weird happens. Every 50 frames or so a random bond within the backbone of the protein

RE: [gmx-users] Pull simulation odditites when viewed in VMD

2010-12-09 Thread Natalie Stephenson
users Subject: Re: [gmx-users] Pull simulation odditites when viewed in VMD Natalie Stephenson wrote: Hey, I've been performing a pull simulation of a protein, all seems to work fine however after I convert the .xtc file into seperate .gro files and load those into VMD to visualise the simulation

[gmx-users] Pulling Simulation Query

2010-09-27 Thread Natalie Stephenson
Hi ... Just wondering if there's a way, during pulling simulations, to immobilise say the C-terminus of the protein. I've been running through the 'Umbrella Sampling' tutorial with my own protein. Within this tutorial the ChainB is used as the immobile reference - so it is this that is

[gmx-users] Energy minimisation problems - coordinate file and topology file not matching.

2010-09-22 Thread Natalie Stephenson
Hi everyone, I was hoping you could clear up a problem I'm having when performing energy minimisation. I'm following the instructions from one of the tutorials (Justin's Umbrella Sampling) with my own protein, however, this time when I try to perform the energy minimisation it throws out this

RE: [gmx-users] Energy minimisation problems - coordinate file and topology file not matching.

2010-09-22 Thread Natalie Stephenson
On Wed, Sep 22, 2010 at 6:42 PM, Natalie Stephenson natalie.stephen...@postgrad.manchester.ac.ukmailto:natalie.stephen...@postgrad.manchester.ac.uk wrote: Hi everyone, I was hoping you could clear up a problem I'm having when performing energy minimisation. I'm following the instructions from one

RE: [gmx-users] Energy minimisation problems - coordinate file and topology file not matching.

2010-09-22 Thread Natalie Stephenson
From: gmx-users-boun...@gromacs.org [gmx-users-boun...@gromacs.org] on behalf of Natalie Stephenson [natalie.stephen...@postgrad.manchester.ac.uk] Sent: 22 September 2010 13:02 To: Discussion list for GROMACS users Subject: RE: [gmx-users] Energy minimisation problems

RE: [gmx-users] Energy minimisation problems - coordinate file and topology file not matching.

2010-09-22 Thread Natalie Stephenson
for GROMACS users Subject: Re: [gmx-users] Energy minimisation problems - coordinate file and topology file not matching. Natalie Stephenson wrote: Ok ... think I've worked out what's happened ... There were two 'SOL' groups. So when replacing solvent with ions it has added double the amount

[gmx-users] AFM Pulling Simulations

2010-08-26 Thread Natalie Stephenson
Hi, I'm a complete novice when it comes to using any kind of command prompt based programmes and hadn't even heard of Linux until my supervisor wanted me to use gromacs ... so needless to say I'm running into a few problems!! I've managed to perform all the generic energy minimisations

Re: [gmx-users] AFM Pulling Simulations

2010-08-26 Thread Natalie Stephenson
Quoting Justin A. Lemkul jalem...@vt.edu: Natalie Stephenson wrote: Hi, I'm a complete novice when it comes to using any kind of command prompt based programmes and hadn't even heard of Linux until my supervisor wanted me to use gromacs ... so needless to say I'm running into a few