[AMBER] 2 traj approach using MMPBSA.py ?

From: Marek Maly <marek.maly.ujep.cz>
Date: Fri, 18 Nov 2011 17:34:54 +0100

Hello all,

I am just wondering if MMPBSA.py natively supports 2 trajectory approach
in MMPBSA/GBSA analysis.

It means:

COMPLEX and LIGAND take from the COMPLEX trajectories and RECEPTOR from
the separate RECEPTOR trajectory.

In my case it failed with this error significant for both GB/PB however
written in different calc. stages:

---------------------------------------------
IOError: [Errno 9] Bad file descriptor
close failed in file object destructor:
---------------------------------------------

Lets just note, that in case of 1-trajectory analysis everything was OK,
and GB/PB analyses were done in few minutes.


I used this command to run the 2-traj approach analysis:
.
.
.
SOLV_COM_PRMTOP="../prmtop/com_solvated.prmtop"
SOLV_REC_PRMTOP="../prmtop/rec_solvated.prmtop"

COM_PRMTOP="../prmtop/com.prmtop"
REC_PRMTOP="../prmtop/rec.prmtop"
LIG_PRMTOP="../prmtop/lig.prmtop"

#Complex trajectories
MDCRD="../mdcrd/*.*"
#Receptortrajectories
MDCRDR="../mdcrdR/*.*"

mpiexec -ppn $PPN -n $CPUS $EXE -O -i $IN -o $OUT -sp $SOLV_COM_PRMTOP
-srp $SOLV_REC_PRMTOP -cp $COM_PRMTOP -rp $REC_PRMTOP -lp $LIG_PRMTOP -y
$MDCRD -yr $MDCRDR > progress.log 2>&1
.
.
.



and obtained below written errors.

Thanks a lot in adavnce for any relevant comments !

Best wishes,

     Marek



GB analysis
-----------------------------------------------------------------------------------
.
.
.
Beginning GB calculations with mmpbsa_py_energy...
   calculating complex contribution...
   calculating receptor contribution...
close failed in file object destructor:
IOError: [Errno 9] Bad file descriptor
close failed in file object destructor:
IOError: [Errno 9] Bad file descriptor
close failed in file object destructor:
IOError: [Errno 9] Bad file descriptor
close failed in file object destructor:
IOError: [Errno 9] Bad file descriptor
close failed in file object destructor:
IOError: [Errno 9] Bad file descriptor
close failed in file object destructor:
IOError: [Errno 9] Bad file descriptor
close failed in file object destructor:
IOError: [Errno 9] Bad file descriptor
   calculating ligand contribution....
.
.
----------------------------------------------------------------------------------------

and these fro PB analysis:

-------------------------------------------------------------------------------------------
Beginning PB calculations with mmpbsa_py_energy...
   calculating complex contribution...
  PB Info in pb_read(): npopt has been overwritten with inp
  PB Info in pb_read(): npopt has been overwritten with inp
  PB Info in pb_read(): npopt has been overwritten with inp
  PB Info in pb_read(): npopt has been overwritten with inp
  PB Info in pb_read(): npopt has been overwritten with inp
  PB Info in pb_read(): npopt has been overwritten with inp
  PB Info in pb_read(): npopt has been overwritten with inp
  PB Info in pb_read(): npopt has been overwritten with inp
  Total surface charge 4.9329
  Reaction field energy -2310.3467
  Total surface charge 4.9825
  Reaction field energy -2342.6606
  Cavity solvation energy 58.6062
.
.
.
  calculating receptor contribution...
  PB Info in pb_read(): npopt has been overwritten with inp
  Total surface charge 0.0380
  Reaction field energy -2144.5485
  Cavity solvation energy 61.0186
  Total surface charge -0.0008
  Reaction field energy -2199.3998
  Cavity solvation energy 62.8272
.
.
.
  calculating ligand contribution...
  PB Info in pb_read(): npopt has been overwritten with inp
  Total surface charge 4.9370
  Reaction field energy -470.0802
  Cavity solvation energy 12.3647
  Total surface charge 4.9370
  Reaction field energy -470.7943
  Cavity solvation energy 12.1741
  Total surface charge 4.9367
.
.
.
  Total surface charge 4.9364
  Reaction field energy -494.3758
  Cavity solvation energy 11.5280
close failed in file object destructor:
IOError: [Errno 9] Bad file descriptor
----------------------------------------------------------------

INPUT FILES

GB
Input file for running PB and GB
&general
    endframe=400, verbose=2, keep_files=2,

/
&gb
   igb=1, saltcon=0.0
/

------------------------------------------

PB
Input file for running PB and GB
&general
    endframe=400, verbose=2, keep_files=2,
/
&pb
   istrng=0.0,
/

 

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Received on Fri Nov 18 2011 - 09:00:04 PST
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