Re: [gmx-users] CG MD

2017-06-27 Thread Peter Kroon
Backwards is one such tool

http://pubs.acs.org/doi/abs/10.1021/ct400617g

http://cgmartini.nl/index.php/tools2/resolution-transformation


Peter


On 26-06-17 18:01, Alex Mathew wrote:
>> though most atomistic properties can be studied by rebuilding the
> atomistic coordinates from the CG. Various methods exist to >do this.
>
> Could you please provide a link to any material or paper for this.


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Re: [gmx-users] CG MD

2017-06-26 Thread Alex Mathew
>though most atomistic properties can be studied by rebuilding the
atomistic coordinates from the CG. Various methods exist to >do this.

Could you please provide a link to any material or paper for this.
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Re: [gmx-users] CG MD

2017-06-23 Thread Justin Lemkul



On 6/23/17 10:26 AM, Alex Mathew wrote:

Dear all,
I was wondering the analysis we usually use in the all-atom simulation will
work in for CG model?
I guess secondary structural analysis will be useless since it's not
considering all atoms. What about non-bonded energies and other parameters
such hydrogen bond and essential dynamics?


What do people do in the literature to address the same types of questions 
you're asking.  H-bonding is a microscopic property and likely is not going to 
be addressed via CG, though most atomistic properties can be studied by 
rebuilding the atomistic coordinates from the CG.  Various methods exist to do this.


-Justin

--
==

Justin A. Lemkul, Ph.D.
Ruth L. Kirschstein NRSA Postdoctoral Fellow

Department of Pharmaceutical Sciences
School of Pharmacy
Health Sciences Facility II, Room 629
University of Maryland, Baltimore
20 Penn St.
Baltimore, MD 21201

jalem...@outerbanks.umaryland.edu | (410) 706-7441
http://mackerell.umaryland.edu/~jalemkul

==
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[gmx-users] CG MD

2017-06-23 Thread Alex Mathew
Dear all,
I was wondering the analysis we usually use in the all-atom simulation will
work in for CG model?
I guess secondary structural analysis will be useless since it's not
considering all atoms. What about non-bonded energies and other parameters
such hydrogen bond and essential dynamics?
Thanks
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Re: [gmx-users] CG-MD to study the conformational changes of proteins...

2016-12-26 Thread Shanmuga Priya V.G
Dear Gromacs Users,
I have a insilico model of Mycobacterium cell wall  (surface) protein
which has no transmembrane helices.Which Gromacs tutorials should I
follow for MD studies to know about its conformational stability and
latter for protein - ligand studies. Kindly guide me

Thanking you

with regards
V.G.Shanmuga Priya

On Mon, Dec 26, 2016 at 11:06 PM, Dariush Mohammadyani <
d.mohammady...@gmail.com> wrote:

> Hi Quyen,
>
> Although Martini is a good CG force field for a system contains lipids and
> proteins, it still needs some improvements to capture conformational
> changes (especially large changes).
> Is there any hybrid model available (and ready to use) for such a system?
>
>
> Regards,
> Dariush
>
> On Mon, Dec 26, 2016 at 11:23 AM, Quyen V. Vu  wrote:
>
> > Nikhil say:
> >
> > I would like to study the conformational study of proteins (Amyloid beta)
> > in presence of lipid bilayers and other molecules. Can anyone tell me the
> > possibility of Coarse-grained molecular dynamics for this study, since
> > all-atom MD need more time and my system contains more atoms, so I'm
> > thinking to go for CGMD.  in CG-MD can we do the same analysis as in
> > All-atom MD.?
> >
> >
> > You need to find a force field that support for protein coarse-grain
> model
> >
> > such as Martini: http://cgmartini.nl/
> >
> > to save simulation time you can you CG model or hybrid model( result
> > better than CG model because a important region
> >
> > is treated as standard MD, less important region is use CG model
> > --
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Re: [gmx-users] CG-MD to study the conformational changes of proteins...

2016-12-26 Thread Dariush Mohammadyani
Hi Quyen,

Although Martini is a good CG force field for a system contains lipids and
proteins, it still needs some improvements to capture conformational
changes (especially large changes).
Is there any hybrid model available (and ready to use) for such a system?


Regards,
Dariush

On Mon, Dec 26, 2016 at 11:23 AM, Quyen V. Vu  wrote:

> Nikhil say:
>
> I would like to study the conformational study of proteins (Amyloid beta)
> in presence of lipid bilayers and other molecules. Can anyone tell me the
> possibility of Coarse-grained molecular dynamics for this study, since
> all-atom MD need more time and my system contains more atoms, so I'm
> thinking to go for CGMD.  in CG-MD can we do the same analysis as in
> All-atom MD.?
>
>
> You need to find a force field that support for protein coarse-grain model
>
> such as Martini: http://cgmartini.nl/
>
> to save simulation time you can you CG model or hybrid model( result
> better than CG model because a important region
>
> is treated as standard MD, less important region is use CG model
> --
> Gromacs Users mailing list
>
> * Please search the archive at http://www.gromacs.org/
> Support/Mailing_Lists/GMX-Users_List before posting!
>
> * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
>
> * For (un)subscribe requests visit
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> send a mail to gmx-users-requ...@gromacs.org.
>
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Re: [gmx-users] CG-MD to study the conformational changes of proteins...

2016-12-26 Thread Quyen V. Vu
Nikhil say:

I would like to study the conformational study of proteins (Amyloid beta)
in presence of lipid bilayers and other molecules. Can anyone tell me the
possibility of Coarse-grained molecular dynamics for this study, since
all-atom MD need more time and my system contains more atoms, so I'm
thinking to go for CGMD.  in CG-MD can we do the same analysis as in
All-atom MD.?


You need to find a force field that support for protein coarse-grain model

such as Martini: http://cgmartini.nl/

to save simulation time you can you CG model or hybrid model( result
better than CG model because a important region

is treated as standard MD, less important region is use CG model
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[gmx-users] CG-MD to study the conformational changes of proteins...

2016-12-26 Thread Nikhil Maroli
I would like to study the conformational study of proteins (Amyloid beta)
in presence of lipid bilayers and other molecules. Can anyone tell me the
possibility of Coarse-grained molecular dynamics for this study, since
all-atom MD need more time and my system contains more atoms, so I'm
thinking to go for CGMD.  in CG-MD can we do the same analysis as in
All-atom MD.?
-- 
Regards,
Nikhil Maroli
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Re: [gmx-users] CG MD Simulation of DNA and PAMAM dendrimers

2014-12-17 Thread Johnny Lu
Hi. This mail list can not take attachment. So it might be better to just
past the mdp file in the message.

At which time step did the segmentation fault happen?



On Wed, Dec 17, 2014 at 1:43 PM, Doa Hawamdeh 
wrote:
>
> Dear GROMACS users:
>
> I want to study the complexation between PAMAM dendrimer and DNA using
> coarse-graining molecular dynamics simualtions (MARTINI force field)
> utilizing GROMACS version 5.0.3.
>
> MD integrator is used with time step of 20 fs, but I could not run the
> simulation with this time step, I got *segmentation fault.  *Sure before
> running long simulation I minimized the system. I attached the .mdp file
> that I use. Could you please help me?
>
> Waiting your response.
>
> Thank you.
> Doa
>
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[gmx-users] CG MD Simulation of DNA and PAMAM dendrimers

2014-12-17 Thread Doa Hawamdeh
Dear GROMACS users:

I want to study the complexation between PAMAM dendrimer and DNA using
coarse-graining molecular dynamics simualtions (MARTINI force field)
utilizing GROMACS version 5.0.3.

MD integrator is used with time step of 20 fs, but I could not run the
simulation with this time step, I got *segmentation fault.  *Sure before
running long simulation I minimized the system. I attached the .mdp file
that I use. Could you please help me?

Waiting your response.

Thank you.
Doa
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