Re: [AMBER] Usage of Kongsted Ryde entropy method within MMPBSA.py

From: Jason Swails <jason.swails.gmail.com>
Date: Thu, 28 Apr 2011 20:32:29 -0400

But the minimization is done with nab now -- there is no input file. You actually have to modify the nab program mmpbsa_entropy.nab. See the AmberTools manual --especially the wcons variable -- for addin restraints.

HTH,
Jason

--
Jason M. Swails
Quantum Theory Project,
University of Florida
Ph.D. Candidate
352-392-4032
On Apr 28, 2011, at 12:10 PM, Oliver Kuhn <oak.amber.googlemail.com> wrote:
> Ok. I'm sure I get along somehow without the perl version since I just have
> to modify the input for the minimization step.
> 
> Cheers,
> Olli
> Am 28.04.2011 17:59 schrieb "Jason Swails" <jason.swails.gmail.com>:
>> 
>> I think I'd tend to agree with Markus on this one (although Ryde's MM/PBSA
>> papers use the perl version).  I'm not sure how you would go about
>> accomplishing the buffer region in the nab program, and I'm pretty sure
> Ryde
>> et. al. used the nmode program as well.
>> 
>> All the best,
>> Jason
>> 
>> On Thu, Apr 28, 2011 at 6:18 AM, Oliver Kuhn <oak.amber.googlemail.com
>> wrote:
>> 
>>> Again, Jason,
>>> 
>>> I can remember I have asked something similar few month (or maybe a year
> ;)
>>> ago.
>>> I would like to use the method from:
>>> An improved method to predict the entropy term within the MMPBSA
> approach,
>>> Kongsted Ryde, J Comput Aided Mol Des 2009
>>> 
>>> The main reason is that it will be more computationally efficient and
> I'm
>>> interested how the distribution of entropy estimates will be compared to
>>> usual NMA.
>>> 
>>> The method minimizes a truncated 8A environment around the ligand but
> with
>>> a
>>> 4A fixed buffer region.
>>> Thus, I would tend to input a traj with the 12A environmental residues
>>> around the ligand to the NMA routine in the MMPBSA.py script.
>>> Can you suggest an easy way to tell the script to keep the 4A buffer
> region
>>> fixed during minimization - in other words, where do I have to change
> the
>>> code and set restraints?
>>> 
>>> And b.t.w. thanks also to Bill and Carlo for the discussion on the usage
> of
>>> internal dielectric 1,2,4.
>>> 
>>> Regards,
>>> Oliver
>>> 
>>> --
>>> Oliver Kuhn, Department of Bioinformatics,
>>> Center for Medical Biotechnology, University of Duisburg-Essen,
>>> Universitätsstr. 1-5, 45141 Essen, Germany
>>> phone +49 201 183-3121, oliver.kuhn.uni-due.de
>>> _______________________________________________
>>> AMBER mailing list
>>> AMBER.ambermd.org
>>> http://lists.ambermd.org/mailman/listinfo/amber
>>> 
>> 
>> 
>> 
>> --
>> Jason M. Swails
>> Quantum Theory Project,
>> University of Florida
>> Ph.D. Candidate
>> 352-392-4032
>> _______________________________________________
>> AMBER mailing list
>> AMBER.ambermd.org
>> http://lists.ambermd.org/mailman/listinfo/amber
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Received on Thu Apr 28 2011 - 18:00:02 PDT
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