Re: [gmx-users] Fwd: free energy calculation.

2018-08-27 Thread Dallas Warren
Can't help directly, but 

Good primer for doing Gibbs energy calculations and list of references
on to read further you can find at :

http://www.alchemistry.org/wiki/Main_Page

Other place you should be looking is the literature, what have others
done and published when doing what you are doing?

Catch ya,

Dr. Dallas Warren
Drug Delivery, Disposition and Dynamics
Monash Institute of Pharmaceutical Sciences, Monash University
381 Royal Parade, Parkville VIC 3052
dallas.war...@monash.edu
-
When the only tool you own is a hammer, every problem begins to resemble a nail.



On Tue, 28 Aug 2018 at 09:38, neelam wafa  wrote:
>
> Hi everyone.
> Kindlt need your help urgently.
>
> -- Forwarded message -
> From: neelam wafa 
> Date: Mon, 27 Aug 2018, 3:41 pm
> Subject: free energy calculation.
> To: , 
>
>
> Hi!
> Dear gmx users,
> I have md simmulations of a protein with four different ligands. now I want
> to calculate the free energy of binding. which method does suit after md
> simmulation?  either g_mmpbsa or gmx BAR  method.  If I use BAR method is
> it necessary to set charges to zero as in the tutorial given at
> http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin/gmx-tutorials/free_energy/03_workflow.html.
>
> I s necessary to turn off couloumb interactions for calculating free energy
> of ligand protein complex. if i want to use coloumb interactions also then
> should i set the
>
> coul_lambdas values in the same way as vdw_lambdas.
>
> Another question is that there is another tutorial available at
> http://www.gromacs.org/@api/deki/files/262/=gromacs-free-energy-tutorial.pdf
>
> In this tutorial the system has been equilliberated before generating
> the lambda states.
>
> while in the justin tutorial each lambda state is equiliberated separately.
>
> kindly tell me which one is more suitable for a protein ligand complex.
>
> looking forward for your cooperation.
>
> sorry if the questions are trivial.
>
> Regards
>
> Neelam
>
> Ph.D scholar
> --
> 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
> https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a 
> mail to gmx-users-requ...@gromacs.org.
-- 
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
https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a 
mail to gmx-users-requ...@gromacs.org.


[gmx-users] Fwd: free energy calculation.

2018-08-27 Thread neelam wafa
Hi everyone.
Kindlt need your help urgently.

-- Forwarded message -
From: neelam wafa 
Date: Mon, 27 Aug 2018, 3:41 pm
Subject: free energy calculation.
To: , 


Hi!
Dear gmx users,
I have md simmulations of a protein with four different ligands. now I want
to calculate the free energy of binding. which method does suit after md
simmulation?  either g_mmpbsa or gmx BAR  method.  If I use BAR method is
it necessary to set charges to zero as in the tutorial given at
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin/gmx-tutorials/free_energy/03_workflow.html.

I s necessary to turn off couloumb interactions for calculating free energy
of ligand protein complex. if i want to use coloumb interactions also then
should i set the

coul_lambdas values in the same way as vdw_lambdas.

Another question is that there is another tutorial available at
http://www.gromacs.org/@api/deki/files/262/=gromacs-free-energy-tutorial.pdf

In this tutorial the system has been equilliberated before generating
the lambda states.

while in the justin tutorial each lambda state is equiliberated separately.

kindly tell me which one is more suitable for a protein ligand complex.

looking forward for your cooperation.

sorry if the questions are trivial.

Regards

Neelam

Ph.D scholar
-- 
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
https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a 
mail to gmx-users-requ...@gromacs.org.