[gmx-users] Re: still can not run md for creatine

Olga Ivchenko olga.ivchenko at gmail.com
Mon Nov 15 18:09:35 CET 2010


Hey Vitaly,

Thank you for your reply. Here is the files:

*itp:*
;
;
;       This file was generated by PRODRG version AA081006.0504
;       PRODRG written/copyrighted by Daan van Aalten
;       and Alexander Schuettelkopf
;
;       Questions/comments to dava at davapc1.bioch.dundee.ac.uk
;
;       When using this software in a publication, cite:
;       A. W. Schuettelkopf and D. M. F. van Aalten (2004).
;       PRODRG - a tool for high-throughput crystallography
;       of protein-ligand complexes.
;       Acta Crystallogr. D60, 1355--1363.
;
;

[ moleculetype ]
 Name nrexcl
DRG      3

[ atoms ]
;   nr      type  resnr resid  atom  cgnr   charge     mass
     1        OM     1  DRG     OXT     1   -0.701  15.9994
     2         C     1  DRG       C     1    0.402  12.0110
     3        OM     1  DRG       O     1   -0.701  15.9994
     4       CH2     1  DRG      CA     2    0.185  14.0270
     5         N     1  DRG       N     2    0.468  14.0067
     6       CH3     1  DRG     CAG     2    0.201  15.0350
     7         C     1  DRG     CAH     2    0.377  12.0110
     8        NZ     1  DRG     NAE     2   -0.163  14.0067
     9         H     1  DRG     HA6     2    0.023   1.0080
    10         H     1  DRG     HAE     2    0.024   1.0080
    11        NZ     1  DRG     NAD     2   -0.163  14.0067
    12         H     1  DRG     HA5     2    0.024   1.0080
    13         H     1  DRG     HAD     2    0.024   1.0080

[ bonds ]
; ai  aj  fu    c0, c1, ...
   2   1   2    0.125  13400000.0    0.125  13400000.0 ;     C  OXT
   2   3   2    0.125  13400000.0    0.125  13400000.0 ;     C    O
   2   4   2    0.153   7150000.0    0.153   7150000.0 ;     C   CA
   5   4   2    0.147   8710000.0    0.147   8710000.0 ;     N   CA
   5   6   2    0.147   8710000.0    0.147   8710000.0 ;     N  CAG
   5   7   2    0.134  10500000.0    0.134  10500000.0 ;     N  CAH
   7   8   2    0.134  10500000.0    0.134  10500000.0 ;   CAH  NAE
   7  11   2    0.134  10500000.0    0.134  10500000.0 ;   CAH  NAD
   8   9   2    0.100  18700000.0    0.100  18700000.0 ;   NAE  HA6
   8  10   2    0.100  18700000.0    0.100  18700000.0 ;   NAE  HAE
  11  12   2    0.100  18700000.0    0.100  18700000.0 ;   NAD  HA5
  11  13   2    0.100  18700000.0    0.100  18700000.0 ;   NAD  HAD

[ pairs ]
; ai  aj  fu    c0, c1, ...
   1   5   1                                           ;   OXT    N
   2   6   1                                           ;     C  CAG
   2   7   1                                           ;     C  CAH
   3   5   1                                           ;     O    N
   4   8   1                                           ;    CA  NAE
   4  11   1                                           ;    CA  NAD
   5   9   1                                           ;     N  HA6
   5  10   1                                           ;     N  HAE
   5  12   1                                           ;     N  HA5
   5  13   1                                           ;     N  HAD
   6   8   1                                           ;   CAG  NAE
   6  11   1                                           ;   CAG  NAD
   8  12   1                                           ;   NAE  HA5
   8  13   1                                           ;   NAE  HAD
   9  11   1                                           ;   HA6  NAD
  10  11   1                                           ;   HAE  NAD

[ angles ]
; ai  aj  ak  fu    c0, c1, ...
   1   2   3   2    126.0       770.0    126.0       770.0 ;   OXT    C
O
   1   2   4   2    117.0       635.0    117.0       635.0 ;   OXT    C
CA
   3   2   4   2    117.0       635.0    117.0       635.0 ;     O    C
CA
   2   4   5   2    109.5       520.0    109.5       520.0 ;     C   CA
N
   4   5   6   2    121.0       685.0    121.0       685.0 ;    CA    N
CAG
   4   5   7   2    122.0       700.0    122.0       700.0 ;    CA    N
CAH
   6   5   7   2    117.0       635.0    117.0       635.0 ;   CAG    N
CAH
   5   7   8   2    120.0       670.0    120.0       670.0 ;     N  CAH
NAE
   5   7  11   2    120.0       670.0    120.0       670.0 ;     N  CAH
NAD
   8   7  11   2    120.0       670.0    120.0       670.0 ;   NAE  CAH
NAD
   7   8   9   2    120.0       390.0    120.0       390.0 ;   CAH  NAE
HA6
   7   8  10   2    120.0       390.0    120.0       390.0 ;   CAH  NAE
HAE
   9   8  10   2    120.0       445.0    120.0       445.0 ;   HA6  NAE
HAE
   7  11  12   2    120.0       390.0    120.0       390.0 ;   CAH  NAD
HA5
   7  11  13   2    120.0       390.0    120.0       390.0 ;   CAH  NAD
HAD
  12  11  13   2    120.0       445.0    120.0       445.0 ;   HA5  NAD
HAD

[ dihedrals ]
; ai  aj  ak  al  fu    c0, c1, m, ...
   2   1   3   4   2      0.0  167.4        0.0  167.4   ; imp     C  OXT
O   CA
   5   4   6   7   2      0.0  167.4        0.0  167.4   ; imp     N   CA
CAG  CAH
   7   5   8  11   2      0.0  167.4        0.0  167.4   ; imp   CAH    N
NAE  NAD
   8   7  10   9   2      0.0  167.4        0.0  167.4   ; imp   NAE  CAH
HAE  HA6
  11   7  13  12   2      0.0  167.4        0.0  167.4   ; imp   NAD  CAH
HAD  HA5
   5   4   2   1   1      0.0    1.0 6      0.0    1.0 6 ; dih     N   CA
C  OXT
   2   4   5   7   1    180.0    1.0 6    180.0    1.0 6 ; dih     C   CA
N  CAH
  11   7   5   4   1    180.0   33.5 2    180.0   33.5 2 ; dih   NAD  CAH
N   CA
   5   7   8  10   1    180.0   33.5 2    180.0   33.5 2 ; dih     N  CAH
NAE  HAE
   5   7  11  13   1    180.0   33.5 2    180.0   33.5 2 ; dih     N  CAH
NAD  HAD








*And top. I am prettu sure this file is wrong. And I do not know yet how to
modify it correctly:

*

;
;    File 'creatine.top' was generated
;    By user: onbekend (0)
;    On host: onbekend
;    At date: Mon Nov 15 13:24:44 2010
;
;    This is your topology file
;    it was generated using program:
;    pdb2gmx - version 4.5-beta2
;    with command line:
;    pdb2gmx -f creatine_all_hyd_PRODRGBeta.pdb -o creatine.gro -p
creatine.top
;

#include "creatine.itp"
#include "gromos43a1.ff"


; Include forcefield parameters
;#include "gromos43a1.ff/forcefield.itp"

;"gromos43a1.ff/creatine.itp"


;[ system ]

;[ molecules ]
;DRG      3




2010/11/15 Vitaly Chaban <vvchaban at gmail.com>

> Hey, Olga -
>
> > Also please can you tell me where can I get "ffgmx.itp" file?
>
> /$gromacs_folder/share/gromacs/top/ffgmx.itp as well as all other
> standard topology files are there.
>
> By trying to run md I am getting an error: Fatal error:
> > moleculetype UNK is redefined
>
> Please post you top and itp files here. Looks like you have 2 creatine
> molecules in your topology right now.
>
> Good luck!
>
> Vitaly
>
>
>
>
> > I still have troubles of starting running md for creatine. For which I
> > created topology using PRODRG programm.
> > The only difference between creatine.top and creating.itp is that
> creatine
> > top has additional lines:
> >  #include "ffgmx.itp"
> > #include "creatine.itp"
> >
> > Also please can you tell me where can I get "ffgmx.itp" file?
> >
> > By trying to run md I am getting an error: Fatal error:
> > moleculetype UNK is redefined
>
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