onetwo wrote:
Hello Users,
I have a query regarding simulation with the ligand.
In my protein there are two ligands, one of them (coenzyme) is from the
crystal data, and other I have docked at the active site, while docking
it is showing good interaction with all the active site residues
On 4/28/2011 3:49 PM, Sanku M wrote:
I went through the LINCS manual . But, I am still struggling with
coming up with the idea of putting correct constraint to maintain the
rigidity of tetrahedral molecule . I seem to understand from your
suggestion that the tetrahedral can be seen as a
On 4/28/2011 3:21 PM, onetwo wrote:
Hello Users,
I have a query regarding simulation with the ligand.
In my protein there are two ligands, one of them (coenzyme) is from the
crystal data, and other I have docked at the active site, while docking
it is showing good interaction with all the
Dear Aldo
Thank you for your reply
Mark's notes and yours were very useful.
Best
mohsen
On Wed, Apr 27, 2011 at 6:46 PM, Aldo Segura asegurac...@yahoo.com.mxwrote:
Before making a MD simulation you should try to explore different ways to
analyze your docking results. For example, performing
Dear Justin,
thank you for your precious help. Yes, the problem is what you say and what
I was suspecting too (but I was not sure, that's why I was searching for a
confirmation of my suspects from more expert people). The problem however is
present in the NVT-NPT junction. My .mdp settings were
Could someone assist me seeing as i am only a beginner at molecular dynamics
i have generated models using modeller software and selected the best
model based on DOPE GA341 and
Prosa now i have performed energy minimisations using gromacs software.
I further energy refined the structures
Hello, does anybody have an idea if there are availbale PDB files which
represent metal surfaces for transition state metals, to be used for MD?
BW
S
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gmx-users mailing listgmx-users@gromacs.org
http://lists.gromacs.org/mailman/listinfo/gmx-users
Please search the archive at
Thanks Mark for your comment. But, as far as degrees of freedom is concerned,
if
there is a tetrahedral molecule as I shown below with atom #1 ( B) being center
of the tetrahedron , if we had defined the molecules in terms of bonds and
angles ( in stead of constraints ), we would have 4 bonds
Hi,
That's unlikely, but maybe the following publications can help you to build the
surface:
@Article{Iori2008,
author = Iori, F and Corni, S,
title = {Including image charge effects in the molecular dynamics simulations
of molecules on metal surfaces},
journal = J Comput Chem,
year = 2008,
Thank you
On Thu, Apr 28, 2011 at 6:26 PM, Ran Friedman ran.fried...@lnu.se wrote:
Hi,
That's unlikely, but maybe the following publications can help you to build
the surface:
@Article{Iori2008,
author = Iori, F and Corni, S,
title = {Including image charge effects in the molecular
On 4/28/2011 7:07 PM, Sanku M wrote:
Thanks Mark for your comment. But, as far as degrees of freedom is
concerned, if there is a tetrahedral molecule as I shown below with
atom #1 ( B) being center of the tetrahedron , if we had defined the
molecules in terms of bonds and angles ( in stead of
Sanku M wrote:
Thanks Mark for your comment. But, as far as degrees of freedom is
concerned, if there is a tetrahedral molecule as I shown below with atom
#1 ( B) being center of the tetrahedron , if we had defined the
molecules in terms of bonds and angles ( in stead of constraints ), we
On 4/28/2011 6:10 PM, Ruben Cloete wrote:
Could someone assist me seeing as i am only a beginner at molecular
dynamics
i have generated models using modeller software and selected the best
model based on DOPE GA341 and
Prosa now i have performed energy minimisations using gromacs software.
On 4/28/2011 5:47 PM, Anna Marabotti wrote:
Dear Justin,
thank you for your precious help. Yes, the problem is what you say and what
I was suspecting too (but I was not sure, that's why I was searching for a
confirmation of my suspects from more expert people). The problem however is
present in
Dear Gromacs users,
I wish to convert PDB files to gromacs format while specifying the
topology; however, in the pdb2gmx program, a .top file can only be an
output, not an input.
The need arises as I have an NMR PDB structure (including hydrogens)
which I rather violently perturb into
Ehud Schreiber wrote:
Dear Gromacs users,
I wish to convert PDB files to gromacs format while specifying the
topology; however, in the pdb2gmx program, a .top file can only be an
output, not an input.
The need arises as I have an NMR PDB structure (including hydrogens)
which I rather
On 4/28/2011 10:25 PM, Justin A. Lemkul wrote:
Ehud Schreiber wrote:
Dear Gromacs users,
I wish to convert PDB files to gromacs format while specifying the
topology;
That is not the role of pdb2gmx. pdb2gmx generates a topology that
matches a configuration (which could be in one of
Dear gmx users,
Recently I have parametrized a new force field for glycolipid molecules
based on the GLYCAM parameters. I would like to use it with the
AMBER99SB-ILDN force field in gromacs for simulations of peptides and
glycolipds. As you know GLYCAM uses two different values for fudgeLJ
Previously,
something like happened to me, the solution that worked for me was to use acpype
(code.google.com/p/acpype) and Amber FF. In this way, you could rule out
problems related to the prodrg parameters.
Best
regards,
Aldo
===
Aldo Segura-Cabrera
Hi,
I'm not really a Gromacs user, but I'm currently benchmarking Gromacs
4.5.4 on a large cluster. It seems that my communication (PME) is really
high and gromacs keeps complaining for more PME nodes :
Average load imbalance: 113.6 %
Part of the total run time spent waiting due
Stephane:
The problem is the coulombic 1-4 interactions. There is not (and never
has been as far as I can tell) a way to get different 1-4 coulombic
scaling for different pairs. There is a trick that works when
combining one ff that uses fudgeQQ 1.0 and another that uses fudgeQQ
0.5:
Dear Mark,
thank you very much for your hint. It's a relief to know that I haven't to
redo the simulation!
From now on I will set init_step = 0 for my simulations.
Anna
--
Message: 3
Date: Thu, 28 Apr 2011 20:56:00 +1000
From: Mark Abraham mark.abra...@anu.edu.au
Aargh !! it is not easy :(((, I will try, your trick, Chris. By the way,
thank your for pointing the paper.
A bientot
Stéphane
Message: 5
Date: Thu, 28 Apr 2011 10:45:17 -0400
From: chris.ne...@utoronto.ca
Subject: [gmx-users] Use different fudgeLJ and fudgeQQ values in
how many particles is your system? if the number per domain is too low there is
not much you can do about the load imbalance...but it did report only an
overall 3.2% overhead for this so...
you can modify the PP/PME ratio during mdrun by manually specifying the domain
decomposition yourself.
Dear gmx-users,
I wish to order the components of my system with respect to the polypeptide
using trjorder.
I want to select my first group as the protein and the second group to be
ordered is non-protein (i.e all other components in the system except
polypeptide)
the command I am using is:
Hi Ivan
If in my system there are some of the other components such
SDS surfactant and one of these polarizable models can I use forcefield
parameters from PRODRG or not.
If no, would you please tell me about the references that I can find some
other components in polarizable water model
force
Hello all,
I am trying to order the TIP4P water molecules in my system with respect to
the polypeptide in my system.
The command I am using is:
trjorder -f shape.gro -s shape.tpr -da 0 -na 4 -o ordered.gro
This runs without any error and ordered.gro is generated with random
sequence of water
On Thu, Apr 28, 2011 at 10:05 AM, Bruno Monnet bruno.mon...@hp.com wrote:
Hi,
I'm not really a Gromacs user, but I'm currently benchmarking Gromacs 4.5.4
on a large cluster. It seems that my communication (PME) is really high and
gromacs keeps complaining for more PME nodes :
Average
Dear gmx users,
I am using g_velacc to calculate the velocity auto correlation. The output I
am getting in .xvg file is much lower precision than I require.
Is there a way to get the values in higher precision?
Thanks,
SN
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gmx-users mailing listgmx-users@gromacs.org
Hi,
I was wondering whether someone can comment on what vdw-cutoff scheme will
be
suitable when using a molecule under OPLS/AA force field . Also, providing some
details about what cut-off value one should use will be really helpful.
Thanks
Sanku--
gmx-users mailing list
Hi all,
Is it possible to turn OFF/ON distance restraints after simulating a system
for a certain period of time? If yes, how do I command GMX to do such a job?
Thank you
James
--
Jayasundar Jayant James
www.chick.com/reading/tracts/0096/0096_01.asp)
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gmx-users mailing list
On 4/29/2011 9:09 AM, jayant james wrote:
Hi all,
Is it possible to turn OFF/ON distance restraints after simulating a
system for a certain period of time? If yes, how do I command GMX to
do such a job?
You can do this only by stopping the simulation and re-invoking grompp
with the changed
On 4/29/2011 8:28 AM, Sanku M wrote:
Hi,
I was wondering whether someone can comment on what vdw-cutoff
scheme will be suitable when using a molecule under OPLS/AA force
field . Also, providing some details about what cut-off value one
should use will be really helpful.
Generally, one
On 4/29/2011 4:48 AM, shivangi nangia wrote:
Dear gmx users,
I am using g_velacc to calculate the velocity auto correlation. The
output I am getting in .xvg file is much lower precision than I require.
Is there a way to get the values in higher precision?
Depends what you've done so far,
On 4/29/2011 4:08 AM, shivangi nangia wrote:
Hello all,
I am trying to order the TIP4P water molecules in my system with
respect to the polypeptide in my system.
The command I am using is:
trjorder -f shape.gro -s shape.tpr -da 0 -na 4 -o ordered.gro
This runs without any error and
I want the velocity autocorrelation output in double precision. How can I get
that?
Thanks,
SN
--- On Thu, 4/28/11, Mark Abraham mark.abra...@anu.edu.au wrote:
From: Mark Abraham mark.abra...@anu.edu.au
Subject: Re: [gmx-users] how to get higher precision values for g_velacc
To: Discussion
On 4/29/2011 10:34 AM, shikha nangia wrote:
I want the velocity autocorrelation output in double precision. How
can I get that?
Install GROMACS in double precision. Depending what the problem is, you
might be able to run the double-precision g_velacc on the old data to
get more precision,
Hello,
The manual explaining trjorder says:
trjorder orders molecules according to the smallest distance to atoms in a
reference group or on z-coordinate (with option -z). With distance ordering,
it will ask for a group of reference atoms and a group of molecules. For
each frame of the
On 4/29/2011 11:29 AM, shivangi nangia wrote:
Hello,
The manual explaining trjorder says:
trjorder orders molecules according to the smallest distance to atoms
in a reference group or on z-coordinate (with option -z). With
distance ordering, it will ask for a group of reference atoms and a
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