Re: [AMBER] mmpbsa.py

From: Ray Luo <rluo.uci.edu>
Date: Thu, 9 Nov 2017 05:40:47 -0800

So do you see any error message in the sander output when running with
the first input, which is recommended?

When you use the second input, you implicitly used radiopt=1, which
asks the program to assign radii for all atoms. However it apparently
doesn't know anything about D1/DU, so you saw the error message.

All the best,
Ray
--
Ray Luo, Ph.D.
Professor of Structural Biology/Biochemistry/Biophysics,
Chemical Physics, Biomedical Engineering, and Chemical Engineering
Department of Molecular Biology and Biochemistry
University of California, Irvine, CA 92697-3900
On Thu, Nov 9, 2017 at 1:22 AM, Urszula Uciechowska
<urszula.uciechowska.biotech.ug.edu.pl> wrote:
>
> Dear Amber users,
>
> While running mmpbsa.py (AMBER16) I am getting an error message after 50
> min of calculations that
> amber16/bin/sander failed with prmtop complex.top!
>
>
> My complex contains Zn atom for which I used Cationic Dummy Atom (CaDA)
> approach.
>
> My input for MMPBSA is:
>
> &general
> startframe=1, endframe=1000, interval=1,
> verbose=2, keep_files=0,
> /
> &pb inp=1, radiopt=0,
> /
>
>
>
>
> If i use as a input file:
>
> &general
> startframe=1, endframe=1000, interval=1,
> verbose=2, keep_files=0,
> /
> &pb
> /
>
> The error message is: PB Bomb in pb_aaradi(): No radius assigned for atom
> 2735  D1    DU
>
> I went through the previous user lists messages, but there is no clear
> answers that I could find.
>
> Thanks in advance for any help.
>
> best
> Urszula
> --------------------------------------------
> Urszula Uciechowska PhD
> University of Gdansk and Medical Univesity of Gdansk
> Department of Molecular and Cellular Biology
> ul. Abrahama 58
> 80-307 Gdańsk
> Poland
>
>
> -----------------------------------------
> Ta wiadomość została wysłana z serwera Uniwersytetu Gdańskiego
> http://www.ug.edu.pl/
>
>
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Received on Thu Nov 09 2017 - 06:00:02 PST
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