Re: [AMBER] Free Energy Calculation of Zn-containing protein-peptides using MMPBSA.py

From: Jason Swails <jason.swails.gmail.com>
Date: Tue, 10 Jun 2014 13:06:17 -0400

I don't see any error message there, either.

Without some sort of error message from the program computing the energies
(sander or mmpbsa_py_energy), it will be impossible to diagnose.

That said, your output file showed you are using Amber 11. Please update
to AmberTools 14, as we can really only support the latest version of
AmberTools (especially since it is FOSS).

HTH,
Jason


On Tue, Jun 10, 2014 at 12:53 PM, Senthil Natesan <sen.natesan.yahoo.com>
wrote:

> Jason,
>
> I am attaching the file here. I do not see any obvious errors written
> though. Please point me to the error.
>
> Thanks,
>
> Senthil
>
>
> On Tuesday, June 10, 2014 12:26 PM, Jason Swails <jason.swails.gmail.com>
> wrote:
>
>
> On Tue, Jun 10, 2014 at 11:57 AM, Senthil Natesan <sen.natesan.yahoo.com>
> wrote:
>
> > Thank you Jason.
> >
> > I am running GB, PB and NMode analysis as well.
> >
> >
> > The input file is:
> >
> > &general
> > startframe=50, endframe=99999, interval=100,
> > verbose=2,
> >
> > /
> > &gb
> > igb=5, saltcon=0.150,
> > /
> > &pb
> > istrng=0.15,
> > /
> > &nmode
> > nmstartframe=50, nmendframe=99999, nminterval=100,
> > maxcyc=50000, drms=0.0001,
> > /
> >
> > I submitted the job with the following input command:
> >
> > MMPBSA.py -O -i mmpbsa.in -o mmpbsa.out -sp complex_solvated.prmtop -cp
> > complex.prmtop -rp protein.prmtop -lp peptide.prmtop -y
> > complex_solvated_prod1.mdcrd complex_solvated_prod2.mdcrd
> >
> >
> > The calculation ran successfully for the ligand (peptide), but failed for
> > both complex and receptor as both contains Zn. The error message is
> >
> > Error: No potential terms in sander output ! Check output files.
> >
>
> ​You need to check the output files (e.g., _MMPBSA_complex_gb.mdout.0) for
> the real error messages.
>
>
> --
> Jason M. Swails
> BioMaPS,
> Rutgers University
> Postdoctoral Researcher
> _______________________________________________
> AMBER mailing list
> AMBER.ambermd.org
> http://lists.ambermd.org/mailman/listinfo/amber
>
>
>


-- 
Jason M. Swails
BioMaPS,
Rutgers University
Postdoctoral Researcher
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Received on Tue Jun 10 2014 - 10:30:03 PDT
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