[gmx-users] ionomer topolgy

Ehsan Sadeghi esa38 at sfu.ca
Fri Sep 27 23:53:33 CEST 2013


Hello,

I revised my pdb and rtp files. I still receive similar error message.

Here are the new files:

.pdb:

ATOM      1  C1    LIG     1     -10.450   5.214  -1.717  1.00  0.00           C  
ATOM      2  C2    LIG     1      -8.424   5.477  -1.030  1.00  0.00           C  
ATOM      3  C3    LIG     1      -6.603   5.864  -0.166  1.00  0.00           C  
ATOM      4  F1    LIG     1      -6.651   6.230  -1.691  1.00  0.00           F  
ATOM      5  F2    LIG     1      -8.417   4.546  -2.349  1.00  0.00           F  
ATOM      6  C4    LIG     1      -5.705   3.003   1.204  1.00  0.00           C  
ATOM      7  F3    LIG     1      -7.247   5.032   1.683  1.00  0.00           F  
ATOM      8  F4    LIG     1      -8.521   5.307   0.400  1.00  0.00           F  
ATOM      9  C5    LIG     1      -3.913   4.878   2.109  1.00  0.00           C  
ATOM     10  F5    LIG     1      -4.358   3.650  -0.024  1.00  0.00           F  
ATOM     11  F6    LIG     1      -6.198   1.346   0.214  1.00  0.00           F  
ATOM     12  C6    LIG     1      -1.306   5.673   2.286  1.00  0.00           C  
ATOM     13  F7    LIG     1      -3.429   3.111   0.668  1.00  0.00           F  
ATOM     14  F8    LIG     1      -2.358   3.855   1.570  1.00  0.00           F  
ATOM     15  C7    LIG     1       0.246   3.040   2.048  1.00  0.00           C  
ATOM     16  F9    LIG     1      -0.514   4.358   3.241  1.00  0.00           F  
ATOM     17  F10   LIG     1      -0.928   3.807   1.741  1.00  0.00           F  
ATOM     18  C8    LIG     1       1.925   3.706   2.014  1.00  0.00           C  
ATOM     19  F11   LIG     1      -0.226   2.548   0.094  1.00  0.00           F  
ATOM     20  F12   LIG     1       0.215   1.482   1.590  1.00  0.00           F  
ATOM     21  F13   LIG     1     -11.789   4.355  -2.598  1.00  0.00           F  
ATOM     22  F14   LIG     1     -11.552   4.133  -0.632  1.00  0.00           F  
ATOM     23  F15   LIG     1       2.299   2.385   2.438  1.00  0.00           F  
ATOM     24  F16   LIG     1       1.831   1.994   1.526  1.00  0.00           F  
ATOM     25  O1    SCH     2       3.334   3.720   1.360  1.00  0.00           O  
ATOM     26  C1    SCH     2       5.273   2.985   0.897  1.00  0.00           C  
ATOM     27  C2    SCH     2       6.100   2.445   1.642  1.00  0.00           C  
ATOM     28  F1    SCH     2       4.528   2.997   1.631  1.00  0.00           F  
ATOM     29  F2    SCH     2       6.122   3.473   0.467  1.00  0.00           F  
ATOM     30  C3    SCH     2       7.274   1.746   2.026  1.00  0.00           C  
ATOM     31  O2    SCH     2       5.454   2.160   2.446  1.00  0.00           O  
ATOM     32  F3    SCH     2       6.788   2.944   0.993  1.00  0.00           F  
ATOM     33  F4    SCH     2       7.031   1.025   2.779  1.00  0.00           F  
ATOM     34  F5    SCH     2       8.010   2.431   2.393  1.00  0.00           F  
ATOM     35  F6    SCH     2       7.678   1.241   1.173  1.00  0.00           F  
ATOM     36  C4    SCH     2       5.042   1.305   2.243  1.00  0.00           C  
ATOM     37  C5    SCH     2       5.168   0.043   2.583  1.00  0.00           C  
ATOM     38  F7    SCH     2       4.938   1.296   1.178  1.00  0.00           F  
ATOM     39  F8    SCH     2       4.377   1.446   3.070  1.00  0.00           F  
ATOM     40  S     SCH     2       5.516  -1.463   2.733  1.00  0.00           S  
ATOM     41  F9    SCH     2       4.304   0.015   3.213  1.00  0.00           F  
ATOM     42  F10   SCH     2       6.073   0.088   2.014  1.00  0.00           F  
ATOM     43  O3    SCH     2       4.555  -2.079   3.473  1.00  0.00           O  
ATOM     44  H     SCH     2       4.772  -3.020   3.567  1.00  0.00           H  
ATOM     45  O4    SCH     2       6.692  -1.508   1.977  1.00  0.00           O  
ATOM     46  O5    SCH     2       6.001  -2.846   2.762  1.00  0.00           O  
----------------------------------
.rtp

[ LIG ]
 [ atoms ]
     C1     C   0.000     0
     C2     C   0.000     0
     C3     C   0.000     0
     F1     F   0.000     0
     F2     F   0.000     0
     C4     C   0.000     0
     F3     F   0.000     0
     F4     F   0.000     0
     C5     C   0.000     0
     F5     F   0.000     0
     F6     F   0.000     0
     C6     C   0.000     0
     F7     F   0.000     0
     F8     F   0.000     0
     C7     C   0.000     0
     F9     F   0.000     0
     F10    F   0.000     0
     C8     C   0.000     0
     F11    F   0.000     0
     F12    F   0.000     0
     F13    F   0.000     0
     F14    F   0.000     0
     F15    F   0.000     0
     F16    F   0.000     0

[ SCH ]
 [ atoms ]
     O1    OM   0.000     0
     C1     C   0.000     0
     C2     C   0.000     0
     F1     F   0.000     0
     F2     F   0.000     0
     C3     C   0.000     0
     O2    OM   0.000     0
     F3     F   0.000     0
     F4     F   0.000     0
     F5     F   0.000     0
     F6     F   0.000     0
     C4     C   0.000     0
     C5     C   0.000     0
     F7     F   0.000     0
     F8     F   0.000     0
     S      S   0.000     0
     F9     F   0.000     0
     F10    F   0.000     0
     O3     O   0.000     0
     H      H   0.000     0
     O4     O   0.000     0
     O5     O   0.000     0
 

Thanks,
Ehsan

----- Original Message -----
From: "Justin Lemkul" <jalemkul at vt.edu>
To: "Discussion list for GROMACS users" <gmx-users at gromacs.org>
Sent: Friday, September 27, 2013 1:24:44 PM
Subject: Re: [gmx-users] ionomer topolgy



On 9/27/13 4:18 PM, Ehsan Sadeghi wrote:
> Hi,
>
> I just added this to the existing .rtp file in gromos
>
> [ LIG ]
>   [ atoms ]
>       C     C   0.000     0
>       F     F   0.000     0
>
> [ SCH ]
>   [ atoms ]
>       O    OM   0.000     0
>       C     C   0.000     0
>       O     O   0.000     0
>       F     F   0.000     0
>       S     S   0.000     0
>       H     H   0.000     0
>
> I also added LIG and SCH to the residuetypes.dat
>

Your definition of "LIG" in the .rtp entry does not come anywhere close to 
matching what is in the .pdb file.  If, in fact, each residue only has two atoms 
(I don't see how that's chemically possible), then your residue numbers have to 
follow suit.  As it stands now, pdb2gmx is trying to find a 24-atom LIG residue 
and a 22-atom SCH.  Neither of these is true, per the .rtp.

-Justin

> Kind regards,
> Ehsan
>
> ----- Original Message -----
> From: "Justin Lemkul" <jalemkul at vt.edu>
> To: "Discussion list for GROMACS users" <gmx-users at gromacs.org>
> Sent: Friday, September 27, 2013 12:29:38 PM
> Subject: Re: [gmx-users] ionomer topolgy
>
>
>
> On 9/27/13 3:17 PM, Ehsan Sadeghi wrote:
>> Many thanks Justin.
>>
>> Here is my .pdb file:
>>
>> ATOM      1  C   LIG     1     -10.450   5.214  -1.717  1.00  0.00           C
>> ATOM      2  C   LIG     1      -8.424   5.477  -1.030  1.00  0.00           C
>> ATOM      3  C   LIG     1      -6.603   5.864  -0.166  1.00  0.00           C
>> ATOM      4  F   LIG     1      -6.651   6.230  -1.691  1.00  0.00           F
>> ATOM      5  F   LIG     1      -8.417   4.546  -2.349  1.00  0.00           F
>> ATOM      6  C   LIG     1      -5.705   3.003   1.204  1.00  0.00           C
>> ATOM      7  F   LIG     1      -7.247   5.032   1.683  1.00  0.00           F
>> ATOM      8  F   LIG     1      -8.521   5.307   0.400  1.00  0.00           F
>> ATOM      9  C   LIG     1      -3.913   4.878   2.109  1.00  0.00           C
>> ATOM     10  F   LIG     1      -4.358   3.650  -0.024  1.00  0.00           F
>> ATOM     11  F   LIG     1      -6.198   1.346   0.214  1.00  0.00           F
>> ATOM     12  C   LIG     1      -1.306   5.673   2.286  1.00  0.00           C
>> ATOM     13  F   LIG     1      -3.429   3.111   0.668  1.00  0.00           F
>> ATOM     14  F   LIG     1      -2.358   3.855   1.570  1.00  0.00           F
>> ATOM     15  C   LIG     1       0.246   3.040   2.048  1.00  0.00           C
>> ATOM     16  F   LIG     1      -0.514   4.358   3.241  1.00  0.00           F
>> ATOM     17  F   LIG     1      -0.928   3.807   1.741  1.00  0.00           F
>> ATOM     18  C   LIG     1       1.925   3.706   2.014  1.00  0.00           C
>> ATOM     19  F   LIG     1      -0.226   2.548   0.094  1.00  0.00           F
>> ATOM     20  F   LIG     1       0.215   1.482   1.590  1.00  0.00           F
>> ATOM     21  F   LIG     1     -11.789   4.355  -2.598  1.00  0.00           F
>> ATOM     22  F   LIG     1     -11.552   4.133  -0.632  1.00  0.00           F
>> ATOM     23  F   LIG     1       2.299   2.385   2.438  1.00  0.00           F
>> ATOM     24  F   LIG     1       1.831   1.994   1.526  1.00  0.00           F
>> ATOM     25  OM  SCH     2       3.334   3.720   1.360  1.00  0.00           O
>> ATOM     26  C   SCH     2       5.273   2.985   0.897  1.00  0.00           C
>> ATOM     27  C   SCH     2       6.100   2.445   1.642  1.00  0.00           C
>> ATOM     28  F   SCH     2       4.528   2.997   1.631  1.00  0.00           F
>> ATOM     29  F   SCH     2       6.122   3.473   0.467  1.00  0.00           F
>> ATOM     30  C   SCH     2       7.274   1.746   2.026  1.00  0.00           C
>> ATOM     31  OM  SCH     2       5.454   2.160   2.446  1.00  0.00           O
>> ATOM     32  F   SCH     2       6.788   2.944   0.993  1.00  0.00           F
>> ATOM     33  F   SCH     2       7.031   1.025   2.779  1.00  0.00           F
>> ATOM     34  F   SCH     2       8.010   2.431   2.393  1.00  0.00           F
>> ATOM     35  F   SCH     2       7.678   1.241   1.173  1.00  0.00           F
>> ATOM     36  C   SCH     2       5.042   1.305   2.243  1.00  0.00           C
>> ATOM     37  C   SCH     2       5.168   0.043   2.583  1.00  0.00           C
>> ATOM     38  F   SCH     2       4.938   1.296   1.178  1.00  0.00           F
>> ATOM     39  F   SCH     2       4.377   1.446   3.070  1.00  0.00           F
>> ATOM     40  S   SCH     2       5.516  -1.463   2.733  1.00  0.00           S
>> ATOM     41  F   SCH     2       4.304   0.015   3.213  1.00  0.00           F
>> ATOM     42  F   SCH     2       6.073   0.088   2.014  1.00  0.00           F
>> ATOM     43  O   SCH     2       4.555  -2.079   3.473  1.00  0.00           O
>> ATOM     44  H   SCH     2       4.772  -3.020   3.567  1.00  0.00           H
>> ATOM     45  O   SCH     2       6.692  -1.508   1.977  1.00  0.00           O
>> ATOM     46  O   SCH     2       6.001  -2.846   2.762  1.00  0.00           O
>> CONECT    1    2   21   22
>> CONECT    2    1    3    4    5
>> CONECT    2
>> CONECT    3    2    6    7    8
>> CONECT    3
>> CONECT    4    2
>> CONECT    5    2
>> CONECT    6    3    9   10   11
>> CONECT    6
>> CONECT    7    3
>> CONECT    8    3
>> CONECT    9    6   12   13   14
>> CONECT    9
>> CONECT   10    6
>> CONECT   11    6
>> CONECT   12    9   15   16   17
>> CONECT   12
>> CONECT   13    9
>> CONECT   14    9
>> CONECT   15   12   18   19   20
>> CONECT   15
>> CONECT   16   12
>> CONECT   17   12
>> CONECT   18   15   23   24   25
>> CONECT   18
>> CONECT   19   15
>> CONECT   20   15
>> CONECT   21    1
>> CONECT   22    1
>> CONECT   23   18
>> CONECT   24   18
>> CONECT   25   18   26
>> CONECT   26   25   27   28   29
>> CONECT   26
>> CONECT   27   26   30   31   32
>> CONECT   27
>> CONECT   28   26
>> CONECT   29   26
>> CONECT   30   27   33   34   35
>> CONECT   30
>> CONECT   31   27   36
>> CONECT   32   27
>> CONECT   33   30
>> CONECT   34   30
>> CONECT   35   30
>> CONECT   36   31   37   38   39
>> CONECT   36
>> CONECT   37   36   40   41   42
>> CONECT   37
>> CONECT   38   36
>> CONECT   39   36
>> CONECT   40   37   43   45   46
>> CONECT   40
>> CONECT   41   37
>> CONECT   42   37
>> CONECT   43   40   44
>> CONECT   44   43
>> CONECT   45   40
>> CONECT   46   40
>> MASTER        0    0    0    0    0    0    0    0   46    0   46    0
>> END
>>
>> -------------------------------------------------
>> I already added LIG and SCH in residuetypes.dat and defined the atoms for each residue in aminoacids.rtp in gromos. When I run pdb2gmx -f nafion.pdb
>> I receive this error:
>>
>>
>> Warning: Starting residue LIG1 in chain not identified as Protein/RNA/DNA.
>> Warning: Starting residue SCH2 in chain not identified as Protein/RNA/DNA.
>> Problem with chain definition, or missing terminal residues.
>> This chain does not appear to contain a recognized chain molecule.
>> If this is incorrect, you can edit residuetypes.dat to modify the behavior.
>> 8 out of 8 lines of specbond.dat converted successfully
>>
>> -------------------------------------------------------
>> Program pdb2gmx, VERSION 4.6.3
>> Source code file: /home/ehssad/Downloads/Gromacs/gromacs-4.6.3/src/kernel/resall.c, line: 642
>>
>> Fatal error:
>> Residue 'LIG' not found in residue topology database
>> For more information and tips for troubleshooting, please check the GROMACS
>>
>
> You still haven't provided any real useful diagnostic information.  What do the
> .rtp entries look like?  Which force field did you modify?  Did you modify a
> local copy of it, or the one in $GMXLIB?  Based on that, are you making the
> right choice when running pdb2gmx?
>
> -Justin
>

-- 
==================================================

Justin A. Lemkul, Ph.D.
Postdoctoral Fellow

Department of Pharmaceutical Sciences
School of Pharmacy
Health Sciences Facility II, Room 601
University of Maryland, Baltimore
20 Penn St.
Baltimore, MD 21201

jalemkul at outerbanks.umaryland.edu | (410) 706-7441

==================================================
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